Music Is Just as Powerful at Improving Mental Health as Exercise, Review Suggests

This article is a repost which originally appeared on https://www.sciencealert.com
David Nield - March 27, 2022
Edited for content and readability - Images sourced from Pexels
Source: DOI: 10.1001/jamanetworkopen.2022.3236

Our Key Takeaways

  • A
  • B
  • C
  • D

The next time you’re not able to get out to the gym, maybe spin some records instead: new research suggests the positive impact on mental health from singing, playing, or listening to music is around the same impact experienced with exercise or weight loss.

That’s based on a meta-analysis covering 26 previous studies and a total of 779 people. The earlier research covered everything from using gospel music as a preventative measure against heart disease to how joining a choir can help people recovering from cancer.

A growing number of studies are finding links between music and wellbeing. However, the level of the potential boost and exactly why it works are areas that scientists are still looking into – and that’s where this particular piece of research can be helpful.

“Increasing evidence supports the ability of music to broadly promote wellbeing and health-related quality of life (HRQOL),” write the researchers in their published paper.

“However, the magnitude of music’s positive association with HRQOL is still unclear, particularly relative to established interventions, limiting inclusion of music interventions in health policy and care.”

All of the 26 studies included in the new research used the widely adopted and well regarded 36-Item Short Form Survey (SF-36) on physical and mental health, or the shorter alternative with 12 questions (SF-12), making it easier to collate and synthesize the data.

The results of the studies were then compared against other research looking at the benefits of “non-pharmaceutical and medical interventions (e.g., exercise, weight loss)” on wellbeing and against research where medical treatments for health issues didn’t include a music therapy component.

According to the study authors, the mental health boost from music is “within the range, albeit on the low end” of the same sort of impact seen in people who commit to physical exercise or weight loss programs.

“This meta-analysis of 26 studies of music interventions provided clear and quantitative moderate-quality evidence that music interventions are associated with clinically significant changes in mental HRQOL,” write the researchers.

“Additionally, a subset of 8 studies demonstrated that adding music interventions to usual treatment was associated with clinically significant changes to mental HRQOL in a range of conditions.”

At the same time, the researchers point out that there was substantial variation between individuals in the studies regarding how well the various musical interventions worked – even if the overall picture was a positive one. This isn’t necessarily something that’s going to work for everyone.

The researchers hope that studies such as this one will encourage health professionals to prescribe some kind of music therapy more often when it comes to helping patients recover from illness or maintain good mental health.

For many of us, listening to music or singing are pleasurable activities and perhaps wouldn’t feel as challenging as getting out for exercise or sticking to a diet – further reasons why they could be helpful as forms of therapy.

“Future research is needed to clarify optimal music interventions and doses for use in specific clinical and public health scenarios,” write the researchers.

The research has been published in JAMA Network Open.

Music Is Just as Powerful at Improving Mental Health as Exercise, Review Suggests

This article is a repost which originally appeared on https://www.sciencealert.com
David Nield - March 27, 2022
Edited for content and readability - Images sourced from Pexels
Source: DOI: 10.1001/jamanetworkopen.2022.3236

Our Key Takeaways

  • A
  • B
  • C
  • D

The next time you’re not able to get out to the gym, maybe spin some records instead: new research suggests the positive impact on mental health from singing, playing, or listening to music is around the same impact experienced with exercise or weight loss.

That’s based on a meta-analysis covering 26 previous studies and a total of 779 people. The earlier research covered everything from using gospel music as a preventative measure against heart disease to how joining a choir can help people recovering from cancer.

A growing number of studies are finding links between music and wellbeing. However, the level of the potential boost and exactly why it works are areas that scientists are still looking into – and that’s where this particular piece of research can be helpful.

“Increasing evidence supports the ability of music to broadly promote wellbeing and health-related quality of life (HRQOL),” write the researchers in their published paper.

“However, the magnitude of music’s positive association with HRQOL is still unclear, particularly relative to established interventions, limiting inclusion of music interventions in health policy and care.”

All of the 26 studies included in the new research used the widely adopted and well regarded 36-Item Short Form Survey (SF-36) on physical and mental health, or the shorter alternative with 12 questions (SF-12), making it easier to collate and synthesize the data.

The results of the studies were then compared against other research looking at the benefits of “non-pharmaceutical and medical interventions (e.g., exercise, weight loss)” on wellbeing and against research where medical treatments for health issues didn’t include a music therapy component.

According to the study authors, the mental health boost from music is “within the range, albeit on the low end” of the same sort of impact seen in people who commit to physical exercise or weight loss programs.

“This meta-analysis of 26 studies of music interventions provided clear and quantitative moderate-quality evidence that music interventions are associated with clinically significant changes in mental HRQOL,” write the researchers.

“Additionally, a subset of 8 studies demonstrated that adding music interventions to usual treatment was associated with clinically significant changes to mental HRQOL in a range of conditions.”

At the same time, the researchers point out that there was substantial variation between individuals in the studies regarding how well the various musical interventions worked – even if the overall picture was a positive one. This isn’t necessarily something that’s going to work for everyone.

The researchers hope that studies such as this one will encourage health professionals to prescribe some kind of music therapy more often when it comes to helping patients recover from illness or maintain good mental health.

For many of us, listening to music or singing are pleasurable activities and perhaps wouldn’t feel as challenging as getting out for exercise or sticking to a diet – further reasons why they could be helpful as forms of therapy.

“Future research is needed to clarify optimal music interventions and doses for use in specific clinical and public health scenarios,” write the researchers.

The research has been published in JAMA Network Open.

Good news for coffee lovers: Daily coffee may benefit the heart

This article is a repost which originally appeared on https://www.sciencedaily.com
American College of Cardiology - March 24, 2022
Edited for content and readability - Images sourced from Pexels
Source: acc.org

Drinking coffee — particularly two to three cups a day — is not only associated with a lower risk of heart disease and dangerous heart rhythms but also with living longer, according to studies being presented at the American College of Cardiology’s 71st Annual Scientific Session. These trends held true for both people with and without cardiovascular disease. Researchers said the analyses — the largest to look at coffee’s potential role in heart disease and death — provide reassurance that coffee isn’t tied to new or worsening heart disease and may actually be heart protective.

“Because coffee can quicken heart rate, some people worry that drinking it could trigger or worsen certain heart issues. This is where general medical advice to stop drinking coffee may come from. But our data suggest that daily coffee intake shouldn’t be discouraged, but rather included as a part of a healthy diet for people with and without heart disease,” said Peter M. Kistler, MD, professor and head of arrhythmia research at the Alfred Hospital and Baker Heart Institute in Melbourne, Australia, and the study’s senior author. “We found coffee drinking had either a neutral effect — meaning that it did no harm — or was associated with benefits to heart health.”

Kistler and his team used data from the UK BioBank, a large-scale prospective database with health information from over half a million people who were followed for at least 10 years. Researchers looked at varying levels of coffee consumption ranging from up to a cup to more than six cups a day and the relationship with heart rhythm problems (arrhythmias); cardiovascular disease, including coronary artery disease, heart failure and stroke; and total and heart-related deaths among people both with and without cardiovascular disease. Patients were grouped by how much coffee they reported drinking each day: 0, <1, 1, 2-3, 4-5, >5 cups/day. Coffee drinking was assessed from questionnaires completed upon entry into the registry. Overall, they either found no effect or, in many cases, significant reductions in cardiovascular risk after controlling for exercise, alcohol, smoking, diabetes and high blood pressure that could also play a role in heart health and longevity.

For the first study, researchers examined data from 382,535 individuals without known heart disease to see whether coffee drinking played a role in the development of heart disease or stroke during the 10 years of follow up. Participants’ average age was 57 years and half were women. In general, having two to three cups of coffee a day was associated with the greatest benefit, translating to a 10%-15% lower risk of developing coronary heart disease, heart failure, a heart rhythm problem, or dying for any reason. The risk of stroke or heart-related death was lowest among people who drank one cup of coffee a day. Researchers did observe a U-shaped relationship with coffee intake and new heart rhythm problems. The maximum benefit was seen among people drinking two to three cups of coffee a day with less benefit seen among those drinking more or less.

The second study included 34,279 individuals who had some form of cardiovascular disease at baseline. Coffee intake at two to three cups a day was associated with lower odds of dying compared with having no coffee. Importantly, consuming any amount of coffee was not associated with a higher risk of heart rhythm problems, including atrial fibrillation (AFib) or atrial flutter, which Kistler said is often what clinicians are concerned about. Of the 24,111 people included in the analysis who had an arrhythmia at baseline, drinking coffee was associated with a lower risk of death. For example, people with AFib who drank one cup of coffee a day were nearly 20% less likely to die than non-coffee drinkers.

“Clinicians generally have some apprehension about people with known cardiovascular disease or arrhythmias continuing to drink coffee, so they often err on the side of caution and advise them to stop drinking it altogether due to fears that it may trigger dangerous heart rhythms,” Kistler said. “But our study shows that regular coffee intake is safe and could be part of a healthy diet for people with heart disease.”

Although two to three cups of coffee a day seemed to be the most favorable overall, Kistler said that people shouldn’t increase their coffee intake, particularly if it makes them feel anxious or uncomfortable.

“There is a whole range of mechanisms through which coffee may reduce mortality and have these favorable effects on cardiovascular disease,” he said. “Coffee drinkers should feel reassured that they can continue to enjoy coffee even if they have heart disease. Coffee is the most common cognitive enhancer — it wakes you up, makes you mentally sharper and it’s a very important component of many people’s daily lives.”

So how might coffee beans benefit the heart? People often equate coffee with caffeine, but coffee beans actually have over 100 biologically active compounds. These substances can help reduce oxidative stress and inflammation, improve insulin sensitivity, boost metabolism, inhibit the gut’s absorption of fat and block receptors known to be involved with abnormal heart rhythms, Kistler said.

In a third study, researchers looked at whether there were any differences in the relationship between coffee and cardiovascular disease depending on whether someone drank instant or ground coffee or caffeinated or decaf. They found, once again, two to three cups a day to be associated with the lowest risk of arrhythmias, blockages in the heart’s arteries, stroke or heart failure regardless of whether they had ground or instant coffee. Lower rates of death were seen across all coffee types. Decaf coffee did not have favorable effects against incident arrhythmia but did reduce cardiovascular disease, with the exception of heart failure. Kistler said the findings suggest caffeinated coffee is preferable across the board, and there are no cardiovascular benefits to choosing decaf over caffeinated coffees.

There are several important limitations to these studies. Researchers were unable to control for dietary factors that may play a role in cardiovascular disease, nor were they able to adjust for any creamers, milk or sugar consumed. Participants were predominantly white, so additional studies are needed to determine whether these findings extend to other populations. Finally, coffee intake was based on self-report via a questionnaire fielded at study entry. This should be considered when interpreting the study findings, though Kistler noted that research suggests people’s dietary habits don’t change much in adulthood or over time. Kistler said the results should be validated in randomized trials.

The study, “Effects of Habitual Coffee Consumption on Incident Cardiovascular Disease, Arrhythmia, and Mortality: Findings from UK BioBank,” will be presented on Sunday, April 3.

The second related study, “Regular Coffee Intake is Associated with Improved Mortality in Prevalent Cardiovascular Disease,” will be presented virtually on Saturday, April 2.

The third related study, “Ground, Instant, or Decaffeinated Coffee? Impact of Different Coffee Subtypes on Incident Arrhythmia, Cardiovascular Disease and Mortality,” will be presented on Sunday, April 3.

Here’s What Doomscrolling Is Doing to Your Brain – And How to Fix It

This article is a repost which originally appeared on https://www.sciencealert.com/
BARBARA JACQUELYN SAHAKIAN ET AL., THE CONVERSATION - MARCH 14, 2022
Edited for content and readability - Images sourced from Pexels

Our Key Takeaways

  • A
  • B
  • C
  • D

Many people have experienced chronic stress since the pandemic lockdowns. Added to this are the climate crisis, the increasing cost of living and most recently threats to European and global security due to the conflict in Ukraine.

To some, it may seem that there is never any good news anymore. This is of course not true, but when we’re doomscrolling – spending an excessive amount of screen time devoted to reading negative news – we can become locked into thinking it is.

Doomscrolling can promote feelings of anxiety and depression. For example, consider how sad and exhausted you may feel when watching a drama with tragic events and sad music in the background.

In contrast, if you watch a funny film or romantic comedy with lively music, you may feel upbeat and energized. This is due to two psychological phenomena: “mood induction” (an intervention that can change our mood) and empathy.

Serotonin is an important brain chemical for regulating mood, and it can drop when we are chronically stressed or saddened by bad news for extended periods of time. Studies show that it is even possible to exacerbate the effects of reducing serotonin in healthy people through mood induction by playing sad music. Pharmacological treatments which increase serotonin are used to treat depression and anxiety.

Empathy is a good trait which helps us live successfully with others and promotes a flourishing society. However, excessive empathy, when viewing tragic world events on the news, may lead to ruminating on negative thoughts, which have an impact on our mental health and wellbeing. Constantly thinking negative thoughts can lead to depression or anxiety.

Such conditions can over time have a huge effect on our minds, leading to actual cognitive impairments such as reduced attention or problems with memory and reasoning.

After all, if negative information hijacks our attention and memory, it will drain cognitive power that could be used for other things. And when we are constantly soaking up negative news and recording negative memories, we feel even more down – creating a vicious cycle.

The longer we are stuck with a low mood, the harder it becomes for us to think flexibly, easily switching between different perspectives. This is how we can become “stuck” with a thought such as “this is never going to end” or “there is no good news” – leading to intense feelings of powerlessness and helplessness.

You don’t have to be clinically depressed to develop problems with attention, though. We know that attention is critical for cognition and mental health and that technology can affect it.

For example, one study examined the effects of receiving real-time instant messages on their mobile phones while studying for a test. The group who were interrupted by messages took significantly longer to complete the test and experienced increased levels of stress compared to the group who were able to study without distraction. We know that problems of severe distraction are seen in attention deficit hyperactivity disorder.

So it isn’t just the negative content we are consuming that can harm our attention, the very technology we are using to access it is also a problem. And this may ultimately affect our performance at work, school or even in social settings.

Problems with attention can itself make us more anxious – creating another feedback loop. Over-focusing our attention on threatening things, such as obsessively checking the latest tragic news, can in fact be detrimental to wellbeing. In severe cases it may lead to repetitive checking behavior, seen in obsessive compulsive disorder (OCD). And we know that children with OCD and perfectionism have increased levels of anxiety.

Reset your brain

So what can we do about it? It is important to avoid obsessive doomscrolling but instead show resilience and gain mastery over the situation. To do that, you need to have some positive moments of respite.

So try to schedule something you enjoy and which relaxes and de-stresses you daily, such as reading a good book, watching a fun film, visiting friends and family or mindfulness training. Exercise or learning something new, such as a different language or a musical instrument, can also be good – boosting both mood as well as cognition.

Another way to take control of the situation is by taking action, perhaps joining or supporting a charity that is involved in helping civilians in Ukraine. When you perform an act of kindness, it activates the reward system in the brain – and gives you some power over the situation.

If you continue to be disturbed by doomscrolling, you may wish to contact a clinical psychologist who can help you reduce this activity and its effects, through the use of cognitive behavioral therapy. Interestingly, one study showed it is possible to improve your mood through cognitive mood induction – rewarding people for their performance on a cognitive test.

In a modern globalized world with many forms of technology and constant bombardment of information and streams of stimulation – some good and some bad – it is important to identify your goals. But it is equally important to develop a strategy for achieving them and for avoiding distraction. So the bottom line is to try to stay positive and resilient – for your sake and others.

After all, what use are we in helping to solve difficult global challenges, such as conflict and climate change, if we’re so depressed and cognitively depleted that we can’t think of the best actions to take?

What Is Blood Flow Restriction (& Is It the New Cupping)?

What Is Blood Flow Restriction (& Is It the New Cupping)?

Is Blood Flow Restriction the New Cupping?

By Sarah Stiefvater | Feb. 13, 2022

This article is a repost which originally appeared on PureWow

Edited for content

Our Takeaways:

‧ Blood Flow Restriction (BFR) has been used by such notables as Olympic champion Michael Phelps via the “cupping” method

‧ BFR is becoming increasingly popular to nonprofessional athletes

‧ BFR is considered theoretical in practice, but it has already shown promising results

Think back to the 2016 summer Olympics in Rio. Remember seeing athletes—most famously, Michael Phelps—with red, circular bumps on their bodies and finding out that they were the result of cupping, an ancient practice that uses suction cups directly on the skin to promote circulation and relieve muscle tension? Then remember how regular people (non-Olympic athletes) started trying out cupping as a way to treat muscle pain and speed up recovery? Well, there’s another technique utilized by Olympians that experts say might trickle down to the masses. It’s called blood flow restriction training (BFR), and it’s basically a practice in which pressurized cuffs are worn around the arms or legs to slow blood flow to specific muscles during training in an attempt to build more muscle mass. Read on for everything you need to know.

What Is Blood Flow Restriction?

Developed by Dr. Yoshiaki Sato, a Japanese former power lifter, back in 1966, blood flow restriction training is the practice of placing a specialized tourniquet (that kind of looks like a blood pressure cuff) around one of your limbs to control blood flow. In theory, this should allow you get more gains out of lower-intensity exercise. The idea is that the tight band or strap restricts the blood flow in and out, which temporarily creates a low oxygen environment for the muscle. This low oxygen environment forces the muscles to work harder, which could lead to muscle repair and growth. Though right now it’s predominantly used by elite athletes, like cupping, BFR is trickling down to more casual exercisers, including celebs like Tracee Ellis Ross, who shared her experience on Instagram.

Does It Actually Build Muscle and Speed Up Recovery?

While there aren’t a ton of studies on the efficacy of BFR, the research that is out there is promising. For example, a 2019 study published in the Journal of Applied Physiology found that BFR paired with low-intensity resistance exercise yielded similar muscle gains when compared with high-intensity resistance exercise in a group of adult men over a 14-week period.

It’s important to note that, because BFR isn’t super widely practiced yet, there are some issues surrounding proper technique. A 2017 study published in the British Journal of Sports Medicine found that many rehabilitation professionals were still unclear about how to use it, meaning both more training and more studies are necessary to establish BFR as a (sic).

How Can You Try BFR?

Not by yourself, certainly. Trying practices like blood flow restriction without being trained to do so can be dangerous, so if you’re interested in trying it out, it’s crucial to do so under the supervision of a physical therapist with experience in BFR who can monitor you. Still, if you’re a biohacking enthusiast who’s constantly searching for ways to get the most out of your gym time, it might be worth looking into PTs in your area who can help you try BFR for yourself.

 

 

Beyond longevity: The DIY quest to cheat death and stop aging

Would you take your (extended) life into your own hands?

Peter Ward

This article is a repost which originally appeared on INVERSE

Edited for content

Our Takeaways:

‧ There are new discoveries being made in the field of biohacking which holds promise for life extension

‧ Some scientists and researchers have experimented upon themselves in their quest for knowledge

‧ Life extension is a controversial subject, and there are some practices which are risky

Ken Scott plans to live until he’s 500.

At 79, he’s already outlived the CDC’s official life expectancy by two years and he has no intention of dying — or even slowing down — anytime soon. An active man, Scott jets between his homes in upstate New York and Florida, flies to exotic locations such as Panama City for business and still finds time for the odd cruise. His secret? A DIY regime of self-experimentation and untested therapies he believes will keep him going well past the next century.

Self-experimenters litter the history of medical science. Dentist Horace Wells dosed himself with nitrous oxide in 1844 to see if it could kill pain, Nicholas Senn inflated his innards with hydrogen a few decades later to work out if it could diagnose a ruptured bowel, and more recently, Barry Marshall drank a solution containing H. pylori in 1985 to prove the bacterium caused ulcers.

These scientists risked their own health to make a medical breakthrough or prove a theory, but Scott is not a scientist. He’s an amateur enthusiast, also known as a biohacker. Biohackers engage in DIY biology, experimenting on themselves to enhance their brain and body. And many of them — like Scott — see longevity as the ultimate prize.

Now, longevity research is being transformed by mega-cash injections by the likes of Peter Thiel and Jeff Bezos. In 2021, Bezos helped fund a start-up called Altos Labs, which deals in “rejuvenation” science — essentially, trying to science our way out of the aging process. Biohacker Reason (his legal and only name), who runs the website fightaging.org, tells Inverse that Bezos and others’ success in their endeavors will come from the experiments he, Scott, and other biohackers do now.

“You don’t get companies with money coming in and running half-million-dollar or million-dollar clinical trials that are semi-formal without a community of self experimenters to ferment and give rise to that. And you don’t have people running huge formal trials without support from this community,” Reason says.

Life Extension for the Masses

“One million people will die this year from age-related diseases, they should be given access to technology that not only can help them but make a better world for everyone else.” — Liz Parrish, biohacker.

Scott’s interest in longevity has grown over time. He first got involved in the 1980s after reading Life Extension: A Practical Scientific Approach by Durk Pearson and Sandy Shaw, which preached healthy eating and rigorous exercise, but really got serious in 2002 when he was frustrated by continual sinus infections.

“I remembered something my grandmother had told me when I was 10 or 12, she told me ‘You are what you eat.’ I said to myself, I need to stop eating, this eating is poisoning me,” he recalls. Scott didn’t eat for five days and by the fourth, his sinuses were cleared. He realized he had a gluten problem and apparently never suffered from sinus issues again.

From there, Scott’s experiments got gradually more extreme, from adopting a vegan, sugar-free, processed food-free diet, to regular intermittent fasting. In the past two years, he started taking untested and unregulated interventions like amniotic fluid injections.

Over the same time period, longevity and anti-aging research were picking up pace and getting some serious private cash flow — giving hope to people like Scott who want to live radically longer lives.

This has happened before. Biohacker Reason describes a wave of enthusiasm for life extension which began in the 1970s, but those involved ended up building an industry delivering “nothing except hope and fraud.”

This horrified the scientific community, he says, which took a step back from the whole concept of intervening in aging.

“It took several decades of intense advocacy and a lot of philanthropic help and some advances in the science to change that,” Reason says.

The thing is: While there are more researchers interested in aging and longevity, perhaps in part due to the fact the world population is aging, clinical treatments for aging-related problems are not keeping pace. That leaves people like Scott with a choice: DIY or die.

Scott now spends a large portion of his time researching and seeking out treatments that have not yet been approved for human use — and at a great cost.

“We’re letting people die while we continue to cure mice of conditions.”

Every three months, Scott injects himself with 1cc of amniotic exosomes, a type of extracellular vesicle containing protein, DNA, and RNA of the cells that excrete them, in this case, extracted from the fluid which surrounds and nourishes fetuses as they grow in the womb. He also takes Dasatinib, a drug approved to treat certain types of cancer, believing it will help kill damaging senescent cells in his body. The FDA has not approved amniotic exosomes as a treatment for anything and Dasatinib has not been given the green light for anti-aging purposes, although it has been shown to work in mice when taken with Quercetin, a plant pigment.

In the future, Scott plans to travel outside the United States to undergo a plasmapheresis treatment he describes as a “cleansing” of the blood and eventually gene therapy to reverse the aging in his body’s cells. Plasmapheresis involves taking blood from a patient, removing the plasma, and then mixing the remaining blood with a plasma substitute. It’s used as a cancer treatment, particularly in some forms of blood cancers, but Scott believes it also has regenerative potential for the elderly.

The treatments are not cheap. Amniotic fluid injections cost around $2,000 a pop. Clinics offering amniotic fluid exosome treatments are easily found with a quick Google search, and Scott says their regulation falls into a gray area. Dasatinib is similarly difficult to obtain and costs hundreds of dollars. Scott gets his online, and it’s shipped in from abroad, although he isn’t sure exactly where from in the world. His plan to undergo gene therapy could rack up hundreds of thousands of dollars in medical bills.

“What we’re talking about here is first adopters, and first adopters always pay more,” he says, predicting the cost of treatments will be lowered in the same way computers or cars have become cheaper over time.

Jonathan Moreno, a professor of medical ethics and health policy at the University of Pennsylvania, who authored the book Everybody Wants to Go to Heaven but Nobody Wants to Die, tells Inverse he didn’t see the point of this type of self-experimentation.

“It can be dangerous and most often I think it doesn’t make much difference at all, depending on what you are doing to yourself.”

But he added that he didn’t believe self-experimenters like Scott were doing anything wrong, even if they were wasting their money. “They’re lining the pockets of some fraudsters, and if you don’t mind being exploited that’s the way it is.”

Journey of self-experimentation

“[Self-experimentation] can be dangerous.” — Jonathan Moreno, professor of medical ethics and health policy.

Liz Parrish is one of the most well-known self-experimenters in the world. She traveled to Mexico in 2015 to undergo a gene therapy treatment her company made with the intent of slowing down aging.

Parrish flew to Mexico because regulations in the United States prevented her from trying out the treatment. This is an extreme form of medical tourism — when people travel to countries with more lax regulation in order to undergo treatment not available at home. Parrish believes this type of self-experimentation is becoming increasingly popular.

“It’s like a kettle boiling over,” she says. “People are looking for new technologies. They’re looking for the translation of the technology that they read about in the newspaper.”

“The longevity self-experimentation community is sadly little better than the weightlifters and those guys are crazy.”

The desire to try new medical technology is frustrated by the FDA rules which govern clinical trials, according to Parrish, who says too much time is spent on animal trials that cannot predict how a drug will work on a human.

“We’re letting people die while we continue to cure mice of conditions. It’s at the point of absurd. One million people will die this year from age-related diseases, they should be given access to technology that not only can help them but make a better world for everyone else,” she says.

There’s also the matter of cost. A study led by the London School of Economics found the average price of bringing a drug to market was $1.3 billion. And research by BIO, a trade association for biotechnology companies, found it takes on average 10.5 years for a drug in phase 1 of a clinical trial to attain regulatory approval.

“The regulatory systems are more burdensome and more costly than ever so how are companies going to get that data?” asks Parrish.

Her company Bioviva is attempting to solve that question and collects data from clinics taking medical tourists as clients, hoping it can help bring new technologies like gene therapies to humans in the United States faster. She also says self-experimentation will play an important role at home in the United States, but only if it’s done right.

“Collecting data and expressing your data and keeping track of adverse events, working with groups that can help you do that, is critical,” she says. “But if you don’t track what’s happening it’s not super useful.”

Look inside yourself

Fortunately for biohackers, the tools to measure what’s going on inside their bodies are cheaper and easier to access than ever. InsideTracker, a Boston-based health tracking company, charges customers $589 for its “ultimate’ tracking service, which includes blood tests tracking 43 biomarkers, and then offers clients a full breakdown of how they can improve their health.

Gil Blander, the company’s CEO and co-founder, does not describe himself as a biohacker.

“A lot of them are doing it more to impress others than to do it for themselves,” he says. “I call them pretenders.”

However, he says his company’s services can offer them the chance to produce meaningful results from experimentation. “You measure your 43 blood biomarkers before, do whatever you want — it’s crazy, it’s not crazy, that’s your problem — then measure again and you’ll see what’s happening.”

Biohacker Reason has gone one step further on fightaging.org, posting detailed how-to guides for self-experimentation. He does so because he wants to improve standards in the community.

“The longevity self-experimentation community is sadly little better than the weightlifters and those guys are crazy,” he says. “Bar raising is definitely needed.”

“One thing I can guarantee you, I guarantee you are going to die.”

Scott takes a barrage of health tests every year to ascertain what’s working and what isn’t, but he’s not as eager to make a wider scientific impact. He admits that although he does record the results of his various self-experiments, his data is not lab standard. “I’m very much concerned with doing this for myself,” he admits.

But is he putting himself at considerable risk? Judy Campisi, professor of biogerontology at the Buck Institute for Research on Aging, is concerned by some of the measures taken by people who want to live longer. She says with many drugs and interventions intended to slow down aging, one issue which is always overlooked is the potential stimulation of cancers.

Campisi is also worried about anyone taking amniotic fluids as Scott does.

“I think that people who are not trained in science are not necessarily trained to think critically and that’s a problem. If you’re not thinking critically you could be led astray and that could lead to actual harm because you’re not thinking about the intervention in a way that’s holistic,” she says.

Because of the paucity of data, nobody would really know for certain if a solo experiment had caused serious illness, but the same goes for extended life. Campisi believes the focus should be on extended healthspan, not lifespan — in other words, living your best life for longer. And while she shares concerns over the cost of getting drugs to market, she can’t get on board with lofty goals like immortality.

“Evolution has set species-specific lifespans probably by tweaking hundreds if not thousands of genes and it’s not going to be a single intervention that will be able to do what evolution could do,” she says.

“One thing I can guarantee you, I guarantee you are going to die.”

Understanding Blood Flow Restriction

U.S. News & World Report

February 22, 2022, 7:00 PM

This article is a repost which originally appeared on wtopnews

Edited for content

Our Takeaways:

· BFR (Blood Flow Restriction) is commonly referred to as the new “cupping”

· BFR signals to the brain the muscle is working harder than it is- creating a compensation mechanism

· BFR can induce the secretion of HGH, IGF1, Nitric Oxide, and other beneficent compounds.

Blood flow restriction tourniquets — those arm and leg bands that look a little like narrow blood pressure cuffs — made a splash at the 2020 Tokyo Olympics. Some top performing track athletes and swimmers such as Michael Andrews and Galen Rupp used them while warming up or cooling down.

BFR was hailed as “the new cupping” by some, referring to previous Olympic Games when many swimmers showed up with large circular marks on their skin from the ancient Chinese practice of cupping. Like cupping, BRF is the latest trend in professional sports and fitness that might also have applications for the less-athletic set.

What is BFR?

Caroline Brunst, a physical therapist and athletic trainer with the Ohio State University Wexner Medical Center in Columbus, describes blood flow restriction training as “a novel technique that has gained popularity in recent years.” It’s also known as tourniquet training, because it involves the use of a cuff or tourniquet system on “the proximal end of an extremity,” meaning the upper arm or upper leg.

Most systems use a pneumatic tourniquet, in which the band is inflated with air “to a pressure high enough to maintain arterial flow while restricting venous return,” Brunst explains. This means that the cuff inflates enough to slow the return of blood from the muscle to the heart, but isn’t so tight that it cuts off all circulation, or even restricts blood flow to the working muscle.

This blockage of blood flow from the muscle back to the heart is the key component of BFR. The presence of the extra blood signals to the brain that this muscle is working harder than it really is. This type of physical stimulation can help build muscles, “similarly to what is noted at higher-intensity training with more resistance,” Brunst says. In other words, it boosts the effects of strength training.

A 2019 study in the Journal of Applied Physiology that examined a group of men aged 55 and older during a 14-week period, found that BFR paired with low-intensity resistance exercise offered muscle building gains similar to those achieved through high-intensity resistance exercise.

Origins of BFR

BFR has older origins, says Steven Munatones, CEO and co-founder of KAATSU Global, Inc., the company that makes the original blood flow modification device called KAATSU.

“KAATSU is a Japanese word that means ‘additional pressure’” Munatones says. The idea was first developed by Japanese physiologist and powerlifter Dr. Yoshiaki Sato in 1966.

Sato developed the KAATSU system, which is hailed as the first of the blood flow restriction or blood flow modification systems. There are a variety of other brands and types of blood flow restriction devices on the market today, and they can range from about $25 for the most basic model, to several thousand dollars for the high end options.

How it Works

Blood flow modification or restriction devices like KAATSU are designed to add pressure to the limbs. Munatones says that KAATSU equipment “gently applies pressure to slow down the venous flow — or the return of blood from the limbs to the torso.”

The equipment does not block the flow of oxygenated blood from the heart to the muscle, however, “which is extremely important. While tourniquet and blood pressure cuffs are specifically designed to cut off arterial flow from the torso to the limbs, KAATSU equipment is designed specifically to allow arterial flow to continue unimpeded and only to slightly modify the venous flow.”

Users can set the pressure at variable or constant levels, and you may want to start with very low pressure and build up over time to more intense restriction. Depending on the program, that pressure will stay elevated for usually about 30 to 45 seconds before releasing, and may also cycle through on a set series or repetitions.

A small computer powers these pressure changes in the KAATSU device, and users can set it to a wide variety of programs to help reach their goals, whether that be building speed, stamina, strength, flexibility or recovery and rehabilitation.

Munatones says that when your limbs are engorged with blood and you move, “then a number of biochemical reactions occur naturally in the vascular system and brain as a result.” He says this includes increased secretion of several hormones and other compounds including:

Human growth hormone. HGH is a hormone produced by the pituitary gland that helps muscles grow and cells regenerate. It’s useful for building and repairing tissues in the body and is especially important after intense physical exercise to repair and build stronger muscles.

Insulin-like growth factor 1. IGF-1 is a growth hormone that’s similar in structure to insulin, but works like HGH in building and repairing muscles in adults.

Vascular endothelial growth factor. VEGF is a protein that stimulates the formation of new blood vessels. When blood vessels are obstructed and less oxygen is reaching the tissue, VEGF is released to help new blood vessels develop to get around the blockage.

Brain-derived neurotrophic factor. BDNF is a protein that stimulates cellular growth and repair in the brain and nervous system. Exercise promotes the release of BDNF in the brain.

Nitric oxide. NO is a compound that stimulates growth hormone secretion. It’s also involved in vasodilation, and when blood vessels are compressed, that can increase the release of NO.

Plasmalogens. These lipids, or fats, can help protect other lipids and lipoprotein particles from oxidative stress – that’s the daily wear and tear cells undergo from the stress of daily living, exposure to toxins, and other similar factors. This makes their function similar to that of antioxidants, which are found in many plant-based foods.

Ceramides. These fats found in skin cells can also help build more resilient blood vessel walls.

Testosterone. The male sex hormone testosterone is well known for helping increase strength and muscle size.

“It’s this hormonal and metabolic response that leads to athletic gains and enhanced rehabilitation and recovery,” Munatones explains.

“It’s kind of a biohack,” says Chris Morgan, a Massachusetts-based swimming coach and chief aquatic officer at KAATSU Global. He adds that the device can provide a more efficient way to get the intensity you need from a workout.

For example, with his swimmers, instead of having them swim 8 times 200 meters, (1600 meters total) Morgan will have them do 16 times 25 meters (400 meters total) to get the same end result in a quarter of the time. “And you’re also not going to tear your shoulders apart. You’ll have less connective tissue tearing and less bone grinding, especially if you’re a land athlete” because of that reduced training volume.

Who Can Use BFR Training and Devices?

Strength and power athletes, such as those doing explosive sprinting or those who want big, weightlifting muscles are obvious candidates for adding BFR to their training regimens to reap its benefits of less wear-and-tear on the body.

But other individuals may also find a benefit. Thomas Roe, an American Council on Exercise certified personal trainer, endurance athlete, founder of TRoe Fitness and owner of Local Moves Studio in San Antonio, Texas, says “an ideal candidate is anyone who has trouble lifting heavy loads, which includes your own body weight. Think elderly or those who aren’t physically active prior to going into the surgery or therapy session.”

Munatones agrees that older adults, sedentary people, folks who lack mobility and balance, as well as those with musculoskeletal injuries who are recovering can also be considered ideal candidates.

If you’ve had surgery or are undergoing rehab for an injury “the traditional strengthening model may not be feasible due to pain, instability, swelling or other factors,” Brunst says. If that’s the case, a sports medicine practitioner may use BFR “to facilitate improvements in strength and function.”

The protocol can also help busy individuals get more out of each workout in less time, and even use the devices while doing house work or walking the dog to get a workout in without heading to the gym.

Is BFR Safe?

Brunst notes that people with certain conditions should steer clear of BFR training. These conditions include:

— Vascular disease.

— Diabetes.

— Sickle cell trait or disease.

— Severe hypertension.

— Cancer.

— Pregnancy.

— A history of deep vein thrombosis.

If you have any of these conditions, Brunst recommends talking with your physician and rehabilitation team to determine if BFR is appropriate, or whether an alternative treatment option might be a better choice.

Still, Brunst concludes that “when performed with appropriate athlete selection and with a provider that has undergone sufficient training on BFR application, it has been shown to be safe with very few reported complications.”

Munatones agrees that over their 50-plus years of research and development, KAATSU devices have been found to be safe and “most, but not all, BFR equipment is safe.” However, with some of the less-expensive versions, particularly those that more closely mimic a blood pressure cuff “users can apply too much pressure or apply too much pressure for too long.”

It’s also possible to put the bands in the wrong places or complete exercises that aren’t compatible with consistent pressure. This is why KAATSU recommends working with one of their certified practitioners when starting this therapy. As with any exercise regimen, it’s best to clear use of BFR with your doctor before you start, particularly if you have any underlying medical conditions.

Munatones, who suffered a massive heart attack in 2016, says “I’m convinced that the primary reason why I’m alive is because I had been using KAATSU for over 15 years before I had my heart attack.” He also recovered quickly following KAASTU protocols for cardiac rehabilitation and is now back to competing in marathon swimming events.

That said, not everyone likes or wants these pressure devices as part of their training or rehab efforts. Roe, for example, doesn’t subscribe to this approach. “BFR really is a personal choice,” he says. “If it works for you or you achieve repair and recovery results, then stick with it. Personally, I think most injuries or post-surgery recovery can be accomplished with deep tissue massage, yoga or Pilates, stretching and strengthening or swimming.”

Updated Testimonials for the meCOACH Male Enhancement Coaching Service

The meCOACH Male Enhancement service was created to offer a more streamlined way for men to get help with their male enhancement results.  The lead coach AJ “Big Al” Alfaro has been helping men with their training goals since 1997!

Below are just a small sample of some of the clients he’s helped- some even here on TBH:

From Light Metal:

Al, you big lovable bear, I want to give you a massive thank you for your jelq free routine; I’ve reached my goals by basically doing only that. I can’t quite believe it yet… I’ve actually reached my desired size.

You’re the best, Al.

From Shellman30:

Just wanted to say MeCoach service is worth every penny. I did PE by myself for a year and had no gains. I also had no time to read these forums front to back to know what I was doing wrong. I never even had these “newbie gains” I always read about. With Al I gained 1/2” length in less than 2 months. I am 3 months in now and have no doubt he will help me reach my goals. Also has improved my Premature ejaculation as well. I still have a ways to go but so far really happy.

From J:

Al,

I am reviewing my starting stats in January I was 6.5 X 4.75 today I am 7.25 X 5.125… and I am only 4 months into my 12 month membership with you! Plenty of time to keep working towards my goal.

In 7 months I have gained 3/4 inch length and .37 inch in girth, it’s over 25% increase in volume. Girth giving me a hard time but hope it makes a comeback.

Many hiccups along the way but well worth it.

Thank you!

From CPH:

Well my time is coming to a close in a couple of days. I want to thank you for doing exactly what you say and your website backs up. You definitely care about not only male enhancement but also men’s sexual health which is more important in the long run. Over several years that I’ve been PEing and trying several different methods and only got minimum temporary gains with pumps, jelq devices, etc. It took you and your coaching and trial and error exercises routines to FINALLY get me on the right track and jump start my road to real permanent gains. 1/2 length and 1″ girth gains in 3 months with dedication is well worth the time, effort and money well spent!! I needed motivation to actually stick with a routine long enough to see if it worked or not. I will continue and then cement my gains. Also I appreciate your book as a guideline to go by. I may use membership again down the road as a follow up.

There are more such testimonials from TheBioHacker members at the following thread: meCoach Testimonials

TheBioHacker members are entitled to one FREE month of membership with the purchase of any 3 month subscription!

If you’d like to speed up the learning curve and get a high level of quality assistance in achieving your male enhancement goals, check out MaleEnhancementCoach.com today!

Changing Your Diet Can Add 10 Years to Your Life

Everyone wants to live longer. And we’re often told that the key to doing this is making healthier lifestyle choices, such as exercising, avoiding smoking and not drinking too much alcohol. Studies have also shown that diet can increase lifespan.

This article is a repost which originally appeared on ThePrint
Laura Brown - February 20, 2022
Edited for content and readability - Images sourced from Pexels 
Study Source: https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1003889

Our Takeaways:

  • An optimal diet includes more legumes (beans, peas and lentils), whole grains (oats, barley and brown rice) and nuts, and less red and processed meat.
  • Gains from changing from a western diet to the optimal diet are largest if the diet changes start early in life.
  • Eating the optimal diet from age 20 would increase life expectancy by more than a decade for women and men from the US, China and Europe.
  • At age 60, life expectancy is increased by eight years. At age 80, life expectancy is increased by almost three and a half years.

new study has found that eating healthier could extend lifespan by six to seven years in middle-aged age adults, and in young adults, could increase lifespan by about ten years.

The researchers brought together data from many studies that looked at diet and longevity, alongside data from the Global Burden of Disease study, which provides a summary of population health from many countries. Combining this data, the authors were then able to estimate how life expectancy varied with continuous changes in intake of fruit, vegetables, whole grains, refined grains, nuts, legumes, fish, eggs, dairy, red meat, processed meat and sugary drinks.

The authors were then able to produce an optimal diet for longevity, which they then compared with the typical western diet – which mostly contains high amounts of processed foods, red meat, high-fat dairy products, high-sugar foods, pre-packed foods and low fruit and vegetable intake. According to their research, an optimal diet included more legumes (beans, peas and lentils), whole grains (oats, barley and brown rice) and nuts, and less red and processed meat.

The researchers found that eating an optimal diet from age 20 would increase life expectancy by more than a decade for women and men from the US, China and Europe. They also found that changing from a western diet to the optimal diet at age 60 would increase life expectancy by eight years. For 80-year-olds, life expectancy could increase by almost three and a half years.

But given it isn’t always possible for people to completely change their diet, the researchers also calculated what would happen if people changed from a western diet to a diet that was halfway between the optimal diet and the typical western diet. They found that even this kind of diet – which they called a “feasibility approach diet” – could still increase life expectancy for 20-year-olds by just over six years for women and just over seven years for men.

These results show us that making long-term diet changes at any age may have substantial benefits to life expectancy. But the gains are largest if these changes start early in life.

Full picture?

The life expectancy estimates this study makes come from the most thorough and recent meta-analyses (a study that combines the results of multiple scientific studies) on diet and mortality.

While meta-analyses are, in many cases, the best evidence because of the amount of data analysed, they still produce assumptions with the data, which may cause important differences between studies to be ignored. It’s also worth noting that the evidence for reducing consumption of eggs and white meat was of a lower quality than the evidence they had for whole grains, fish, processed meats and nuts.

There are also a few things the study didn’t take into account. First, to see these benefits, people needed to make changes to their diet within a ten-year period. This means it’s uncertain if people may still see benefits to their lifespan if they make changes to their diet over a longer period of time. The study also didn’t take past ill-health into account, which can affect life expectancy. This means that the benefits of diet on life expectancy only reflect an average and may be different for each person depending on a variety of other factors, such as ongoing health issues, genetics and lifestyle, such as smoking, drinking alcohol and exercise.

But the evidence the researchers looked at was still robust and drawn from many studies on this subject. These findings also align with previous research which has shown that modest but long-term improvements to diet and lifestyle can have significant health benefits – including longevity.

It’s not yet entirely clear all the mechanisms that explain why diet can improve lifespan. But the optimal diet that the researchers uncovered in this study includes many foods that are high in antioxidants. Some research in human cells suggests that these substances may slow or prevent damage to cells, which is one cause of ageing. However, research in this area is still ongoing, so it’s uncertain whether antioxidants that we consume as part of our diet will have the same effect. Many of the foods included within this study also have anti-inflammatory properties, which may also delay the onset of various diseases – and the ageing process.

Of course, changing your diet completely can be difficult. But even introducing some of the foods shown to increase longevity may still have some benefit.

Calorie Restriction That Could Be Harnessed to Extend Healthy Lifespan in Humans

Decades of research has shown that limits on calorie intake by flies, worms, and mice can enhance life span in laboratory conditions. But whether such calorie restriction can do the same for humans remains unclear. Now a new study led by Yale researchers confirms the health benefits of moderate calorie restrictions in humans — and identifies a key protein that could be harnessed to extend health in humans.

This article is a repost which originally appeared on SciTechDaily
Yale University - February 20, 2022
Edited for content and readability - Images sourced from Pexels 
Source: DOI: 10.1126/science.abn6576

Our Takeaways:

  • The study observed the impact of calorie restriction to the immune and metabolic systems.
  • The thymus was analyzed – This is a gland that sits above the heart and produces T cells, a type of white blood cell and a part of the immune system. The thymus ages at a faster rate than other organs.
  • Results found that the thymus glands in participants with limited calorie intake had less fat and greater functionality after two years of calorie restriction.
  • Calorie restriction also reduced a specific protein gene PLA2G7 (a gene that impacts inflammation). Suppressing this gene in a different study protected aged mice from inflammation. (Alprazolam)

The research was based on results from the Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy (CALERIE) clinical trial, the first controlled study of calorie restriction in healthy humans. For the trial, researchers first established baseline calorie intake among more than 200 study participants. The researchers then asked a share of those participants to reduce their calorie intake by 14% while the rest continued to eat as usual, and analyzed the long-term health effects of calorie restriction over the next two years.

The overall aim of the clinical trial was to see if calorie restriction is as beneficial for humans as it is for lab animals, said Vishwa Deep Dixit, the Waldemar Von Zedtwitz Professor of Pathology, Immunobiology, and Comparative Medicine, and senior author of the study. And if it is, he said, researchers wanted to better understand what calorie restriction does to the body specifically that leads to improved health.

Since previous research has shown that calorie restriction in mice can increase infections, Dixit also wanted to determine how calorie restriction might be linked to inflammation and the immune response.

“Because we know that chronic low-grade inflammation in humans is a major trigger of many chronic diseases and, therefore, has a negative effect on life span,” said Dixit, who is also director of the Yale Center for Research on Aging. “Here we’re asking: What is calorie restriction doing to the immune and metabolic systems and if it is indeed beneficial, how can we harness the endogenous pathways that mimic its effects in humans?”

Dixit and his team started by analyzing the thymus, a gland that sits above the heart and produces T cells, a type of white blood cell and an essential part of the immune system. The thymus ages at a faster rate than other organs. By the time healthy adults reach the age of 40, said Dixit, 70% of the thymus is already fatty and nonfunctional. And as it ages, the thymus produces fewer T cells. “As we get older, we begin to feel the absence of new T cells because the ones we have left aren’t great at fighting new pathogens,” said Dixit. “That’s one of the reasons why elderly people are at greater risk for illness.”

For the study, the research team used magnetic resonance imaging (MRI) to determine if there were functional differences between the thymus glands of those who were restricting calories and those who were not. They found that the thymus glands in participants with limited calorie intake had less fat and greater functional volume after two years of calorie restriction, meaning they were producing more T cells than they were at the start of the study. But participants who weren’t restricting their calories had no change in functional volume.

“The fact that this organ can be rejuvenated is, in my view, stunning because there is very little evidence of that happening in humans,” said Dixit. “That this is even possible is very exciting.”

With such a dramatic effect on the thymus, Dixit and his colleagues expected to also find effects on the immune cells that the thymus was producing, changes that might underlie the overall benefits of calorie restriction. But when they sequenced the genes in those cells, they found there were no changes in gene expression after two years of calorie restriction.

This observation required the researchers to take a closer look, which revealed a surprising finding: “It turns out that the action was really in the tissue microenvironment not the blood T cells,” Dixit said.

Dixit and his team had studied adipose tissue, or body fat, of participants undergoing calorie restriction at three time points: at the beginning of the study, after one year, and after two. Body fat is very important, Dixit said, because it hosts a robust immune system. There are several types of immune cells in fat, and when they are aberrantly activated, they become a source of inflammation, he explained.

“We found remarkable changes in the gene expression of adipose tissue after one year that were sustained through year two,” said Dixit. “This revealed some genes that were implicated in extending life in animals but also unique calorie restriction-mimicking targets that may improve metabolic and anti-inflammatory response in humans.”

Recognizing this, the researchers then set out to see if any of the genes they identified in their analysis might be driving some of the beneficial effects of calorie restriction. They honed in on the gene for PLA2G7 — or group VII A platelet activating factor acetylhydrolase — which was one of the genes significantly inhibited following calorie restriction. PLA2G7 is a protein produced by immune cells known as macrophages.

This change in PLA2G7 gene expression observed in participants who were limiting their calorie intake suggested the protein might be linked to the effects of calorie restriction. To better understand if PLA2G7 caused some of the effects observed with calorie restriction, the researchers also tracked what happened when the protein was reduced in mice in a laboratory experiment.

“We found that reducing PLA2G7 in mice yielded benefits that were similar to what we saw with calorie restriction in humans,” said Olga Spadaro, a former research scientist at the Yale School of Medicine and lead author of the study. Specifically, the thymus glands of these mice were functional for a longer time, the mice were protected from diet-induced weight gain, and they were protected from age-related inflammation.

These effects occurred because PLA2G7 targets a specific mechanism of inflammation called the NLRP3 inflammasome, researchers said. Lowering PLA2G7 protected aged mice from inflammation.

“These findings demonstrate that PLA2G7 is one of the drivers of the effects of calorie restriction,” said Dixit. “Identifying these drivers helps us understand how the metabolic system and the immune system talk to each other, which can point us to potential targets that can improve immune function, reduce inflammation, and potentially even enhance healthy lifespan.”

For instance, it might be possible to manipulate PLA2G7 and get the benefits of calorie restriction without having to actually restrict calories, which can be harmful for some people, he said.

“There’s so much debate about what type of diet is better — low carbohydrates or fat, increased protein, intermittent fasting, etc. — and I think time will tell which of these are important,” said Dixit. “But CALERIE is a very well-controlled study that shows a simple reduction in calories, and no specific diet, has a remarkable effect in terms of biology and shifting the immuno-metabolic state in a direction that’s protective of human health. So from a public health standpoint, I think it gives hope.”