Collagen For Men: How To Decide If You Should Take It & Benefits

Collagen For Men: How To Decide If You Should Take It & Benefits

mbg Beauty Director- By Alexandra Engler

Expert review by Ashley Jordan Ferira, Ph.D., RDN

September 21, 2021

This article is a repost which originally appeared on mbghealth

Edited for content.

Despite being on the market for some time now, collagen supplements still seem to garner many questions. How long does it take until you see results? (Answer: It depends!) How much should you take? (There’s no recommended dosage at this time, but we have some pretty good research to support a range of 10 to 20 grams a day.) Are collagen supplements vegan? (Hard no! You can find collagen-supporting supplements made from vegan ingredients but not collagen itself.) 

While those questions are pretty general, others come down to personal factors, such as age, sex, weight, activity level, and lifestyle habits—which brings us to the question at hand: What should men know about taking collagen supplements? Now, we bring this up because sex and hormones can influence what supplements you decide to take. For example, someone going through menopause will likely have a different routine than a 20-something cis male.

So is such the case for collagen? Here’s what we know. 

Should men take collagen supplements?

Most adults could benefit from collagen supplements—no matter their age or sex—as it’s very well tolerated, comes with minimal cautions, and boasts a host of universal benefits.* And did we mention: Hello, protein. So should men take it specifically? Well, if you’re a man and want to take it: By all means!

Really the only difference you may find for supplementation is protein dosage. Allow me to explain. Collagen is a type of protein (it’s an incomplete protein, but more on that in a second). For healthy adults, you need at least 1 gram of protein per kilogram of body weight per day for muscle mass maintenance. From there, protein needs increase based on activity levels: For highly active adults, you should consume 1 to 1.5 grams of protein per kilogram of body weight per day. And collagen supplementation can help you achieve your daily protein intake, as it can act as a complementary source of amino acids. In fact, a 2019 study found that as much as 36% of daily protein could come from collagen peptides while simultaneously achieving daily essential amino acid requirements.*

And since, on average, men weigh more than women (and typically have more connective tissues, where collagen resides)—men may need a higher collagen dose. However, this is neither definitive nor true in every case; it should be evaluated on a person-by-person basis.

As mbg’s director of scientific affairs Ashley Jordan Ferira, Ph.D., RDN, explains, “Every supplement ritual should be individualized, but some supplements get unfairly labeled as only relevant to women or men. That’s unfortunate since nutrition and bioactives are rarely binary. Saying collagen is only for women is like saying calcium is only for women. In reality, men have connective tissues—skin, bones, joints, muscles, tendons, vessels, etc.—that collagen is literally critical for, just like men have bones and require calcium.”*

5 benefits of collagen supplements for men.

Collagen benefits are systemic and universal.* When you ingest peptides, your body absorbs and distributes the amino acids where they are needed. So here are all the ways adding a supplement to your routine can help you: 

1. Skin

I think we can all move past the stereotype that men don’t care about their appearance and skin as they age. Collagen supplements can support the skin in a variety of ways, from firmness to hydration.* For example, one study found that they are able to support skin elasticity and dermal collagen density.* Another double-blind, randomized, placebo-controlled clinical trial found that participants’ moisture levels in the skin were seven times higher than those who did not take collagen supplements.* 

2. Hair

Hair thinning is a very common situation for most men, and one way you can help healthy hair naturally is by providing the body with all the needed building blocks for keratin, the protein that makes up hair. What are those building blocks? Amino acids, many of which are found in collagen peptides.* In fact, the main amino acid in keratin is proline—which is readily found in many collagen supplements.

3. Gut health

While this is a newer area of study for collagen supplements, research has found that levels of certain types of collagen are lower in individuals with digestive challenges.* And much of the benefits are due to collagen peptides’ specific amino acid makeup. For example, research has found that one of the main amino acids in collagen, L-glutamate, supports the intestine by neutralizing oxidative stress and acts as a major fuel source for the cells in the intestine.* The cells of our gut lining also use proline and glycine for energy, and these are two additional amino acids found in collagen.*

4. Muscle mass

Collagen is not technically a complete protein—meaning it does not contain all nine of the essential amino acids (it has eight of them)—but it still delivers plenty of amino acids that can contribute to muscle mass, when taken as part of a robust diet.* This is especially true when combined with the right fitness routines. In one small clinical study, men who took 15 grams of collagen daily while participating in an exercise program gained more muscle mass than those who only completed the exercise program.*

Ferira adds, “Men, muscles, and collagen is an emerging area of research I see gaining momentum. For example, in this compelling clinical trial, 15 grams of collagen peptides combined with resistance exercise training in young healthy men netted significant gains in lean mass (muscle) and muscle strength, more than just resistance training by itself. Not only that, but the researchers discovered that the men’s muscle protein was upregulated (i.e., those genes were cranked up), particularly the contractile fibers, which make your muscles work well and with speed.”*

5. Joints

Collagen type II is a common structural component of our joints. One randomized clinical trial found that people who took a type II collagen supplement for 180 days experienced improvements in their physical function and helped improve joint mobility and comfort.* 

Are there any side effects men should be worried about?

Anytime you start a new supplement, one of the first questions you should look into is if there are any cautions or side effects. Luckily for collagen, it’s a safe and widely tolerated protein: Collagen peptides are safe for consumption, and few side effects, complaints, or cautions are reported. They fall into the “benign” bucket. However, everyone is different, and everyone’s body reacts to products in unique ways. This is why some side effects are reported anecdotally. 

You can learn more about the common collagen side effects here, but as a brief overview:

  • Some brands can taste unpleasant due to the collagen itself or less-than-appetizing filler ingredients.  
  • Anecdotally, some individuals report bloating, stomach upset, and fullness.
  • We all have different sensitivities, so be careful to check where the ingredient is sourced and all other added ingredients in case you personally have an allergen. 
  • Vegans should avoid collagen, as collagen peptides are derived from animals (cows, fish, and chicken most often).

Conclusion

Not every supplement is right for every body or every need. But collagen tends to be a pretty safe bet for most, no matter your sex. Additionally, it has robust universal benefits!

*If you are pregnant, breastfeeding, or taking medications, consult with your doctor before starting a supplement routine. It is always optimal to consult with a health care provider when considering what supplements are right for you.

How to Boost Your Relationship and Sex Life with Healthy Eating

How to Boost Your Relationship and Sex Life with Healthy Eating

Medically reviewed by Natalie Butler, RD, LD on May 11, 2016 — Written by Tara Gidus, MS, RD, CSSD, LD/N

This article is a repost which originally appeared on HealthLine

Food and sex

Much of the lore surrounding the desire- and performance-enhancing effects of certain foods is anecdotal. But a good diet can help boost your libido and ensure your body is working well. A poor diet can lead to a host of health issues, which may negatively effect your sex life. For example, erectile dysfunction is often linked to obesity and diabetes, which can be caused by a poor diet.

Food is an important part of your everyday life and overall health. So it may not surprise you that your diet can affect your sex life. Changing your eating habits and behaviors may not be a cure-all for sexual issues, but it’s a good place to start.

Diet and supplements

Eating a well-balanced diet and taking certain supplements may help improve your overall health and sex life. It’s also important to avoid drinking too much alcohol.

Healthy diet

Fueling your body with the right kinds of food can help boost your mood and energy levels to support a healthy relationship and sex life. For optimum health, eat a nutrient-rich diet that’s low in trans fats, saturated fats, added sugars, and sodium. Eat a wide variety of fruits, vegetables, whole grains, legumes, nuts, and lean proteins. To avoid gaining weight, don’t eat more calories than you burn in a day.

Arginine and L-citrulline

Arginine, also known as L-arginine, is an amino acid used by your body to make nitric oxide. This important chemical helps your blood vessels relax, which promotes good blood flow. If you’re a man, good blood flow to the erectile tissues in your penis is important for sustaining an erection.

When you take supplemental arginine, your intestines break most of it down before it reaches your bloodstream. It may be more helpful to take L-citrulline supplements. L-citrulline is another amino acid that’s converted to arginine in your body. A small study published in Urology found that L-citrulline supplements were more effective than a placebo for treating mild erectile dysfunction.

Both amino acids are also found in foods. L-citrulline is found in foods such as watermelon. Arginine is found in many foods, including:

  • walnuts
  • almonds
  • fish
  • whey
  • fruits
  • leafy vegetables

Zinc

The link between zinc and sexual health isn’t completely understood, but zinc appears to affect your body’s production of testosterone. It’s also necessary for the development of sperm and semen in men. Adequate zinc levels may boost male fertility. Zinc and other nutrients, such as folate, may also impact female fertility.

Zinc is available in supplement form. It’s also found in some foods. Oysters are nature’s richest source of this essential element. Not surprisingly, they have traditionally been viewed as aphrodisiacs, capable of kindling sexual desire.

Alcohol

Drinking alcohol may lower your inhibitions and increase the likelihood that you’ll engage in sexual activity. However, it can also cause acute or chronic erectile dysfunction. It can lead to unsafe behavior too. When you mix sex with alcohol, you’re less likely to use proper precautions to prevent unwanted pregnancy and sexually transmitted infections. Out of control drinking can also negatively affect your behavior and relationships with other people. Don’t rely on alcohol to improve your sex life.

Food-related habits and conflicts

Sometimes, food can be a source of stress and conflict in relationships. On the other hand, you and your partner may bond over shared meals together.

Eating together

In some sense, your brain is the most important sex organ. Sex begins with affection, intimacy, and desire. Mealtime is a great time to unwind with your partner and build intimacy in a relaxed and pleasurable setting.

Food conflicts

Sometimes, different food preferences and habits can be a source of stress in a relationship. To help build intimacy and trust, talk to your partner about issues surrounding your relationship with food. Sources of potential conflicts include:

  • cultural differences
  • religious dietary restrictions
  • tension between a vegetarian and omnivore
  • tension between a picky and adventurous eater

If either of you have a history of eating disorders or chronic dieting, that can also influence your relationships with food and each other.

Support

Body weight is tied to self-esteem and body image for many people. If your partner is trying to lose weight, help them along the way. If you know they’re an emotional eater, offer them support when they seem upset. Criticizing their food choices or looking over their shoulder while they’re eating won’t foster good feelings. Be supportive, not destructive.

Diet-related conditions

Many diet-related health conditions can negatively impact your sex life, as well as your overall health and quality of life. Take steps to prevent and treat diet-related conditions, such as obesity, high blood pressure, and high cholesterol.

Excess weight

Obesity has been linked to lower fertility. Being overweight or obese may also damage your self-esteem, which can affect your libido and desire to be intimate.

To lose excess weight, burn more calories than you consume. Eat healthy portion sizes and limit foods that are high in fat and added sugars. Getting regular exercise is also important.

High blood pressure

Eating too much sodium can increase your blood pressure and limit your blood flow. This can lead to erectile dysfunction in men and reduce blood flow to the vagina in women. Certain blood pressure medications can also cause undesired sexual side effects.

To help maintain healthy blood pressure, follow a well-balanced diet, don’t eat too much sodium, and include potassium-rich foods daily. If you think you’re experiencing negative side effects from blood pressure medication, talk to your doctor. An alternative medication may be available.

High cholesterol

A diet high in saturated or trans fats can increase your “bad” LDL cholesterol. Too much LDL cholesterol can lead to a buildup of plaque in your arteries, which can limit blood flow and contribute to atherosclerosis. Atherosclerosis is the underlying cause of most heart disease. It can also contribute to erectile dysfunction.

To help maintain healthy blood cholesterol levels, eat a well-balanced diet that’s rich in fiber and low in saturated and trans fats. Include foods that are rich in omega-3 fatty acids.

Tips for a healthy sex life

Try these

  • Try oysters. They’re a source of zinc, which boosts your testosterone, and they are traditionally thought of as an aphrodisiac.
  • Eat together to unwind and bond.
  • Cut down on alcohol.
  • Eat watermelon or take L-citrulline supplements to promote healthy blood flow and help sustain erections.
Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.
  • Chang, C. S., Choi, J. B., Kim, H. J., & Park, S. B. (2011, December). Correlation between serum testosterone level and concentrations of copper and zinc in hair tissue. Biological Trace Element Research, 144(1-3), 264-271. Retrieved from
    ncbi.nlm.nih.gov/pubmed/21671089
  • Cormio, L., De Siati ,M., Lorusso, F., Selvaggio, O., Mirabella, L., Sanguedolce, F., … Carrieri, G. (2011, January). Oral L-citrulline supplementation improves erection hardness in men with mild erectile dysfunction. Urology, 77(1), 119-122
    ncbi.nlm.nih.gov/pubmed/21195829
  • Ebisch, I. M., Thomas, C. M., Peters, W. H., Braat, D. D., & Steegers-Theunissen, R. P. (2007, March-April). The importance of folate, zinc and antioxidants in the pathogenesis and prevention of subfertility. Human Reproduction Update, 13(2), 163-174
    ncbi.nlm.nih.gov/pubmed/17099205
  • Miner, M., Esposito, K., Guay, A., Montorsi, P., & Goldstein, I. (2012, March). Cardiometabolic risk and female sexual health: The Princeton III summary. Journal of Sexual Medicine, 9(3), 641-651
    ncbi.nlm.nih.gov/pubmed/22372651
  • Raj, A., Reed, E., Santana, M. C., Walley, A. Y., Welles, S. L., Horsburgh, C. R., … Silverman, J. G. (2009, April). The associations of binge alcohol use with HIV/STI risk and diagnosis among heterosexual African American men. Drug and Alcohol Dependence, 101(1-2), 101-106
    ncbi.nlm.nih.gov/pubmed/19117698
  • Rubio, C., González Weller, D., Martín-Izquierdo, R. E., Revert, C., Rodríguez, I., & Hardisson, A. (2007, January-February). Zinc: An essential oligoelement. Nutricion Hospitalaria, 22(1), 101-107
    ncbi.nlm.nih.gov/pubmed/17260538
  • Wong, W. Y., Thomas, C. M., Merkus, J. M., Zielhuis, G. A., & Steegers-Theunissen, R. P. (2000, March). Male factor subfertility: Possible causes and the impact of nutritional factors. Fertility and Sterility, 73(3), 435-442
    ncbi.nlm.nih.gov/pubmed/10688992

L-Citrulline and L-Arginine: This One-Two Amino Acid Punch Can Improve Circulation—And Your Love Life!

Scientific studies show the combination of L-Citrulline and L-Arginine increases Nitric Oxide production for cardiovascular, immune boosting, and sexual health benefits!

This article is a repost which originally appeared on US Smart Publications

You have probably heard of the amino acid L-arginine, which is also called simply arginine.It is well known in the nutrition science community for its ability to increase nitric oxide production resulting in a wide variety of health benefits. But you probably have not heard much about its powerful amino acid cousin, L-citrulline, or just citrulline.If you eat at least six cups of watermelon every day then you’re getting an adequate dose of the amino acid citrulline. Citrulline’s name is actually derived from the Latin word for watermelon—citrullus—because it was first isolated from the fruit in 1930.1

What does L-Citrulline and L-Arginine do?

Together they help:

– Support cardiovascular health by boosting nitric oxide production and helping blood flow more easily throughout the body

– Support healthy blood pressure and boost the immune system

– Detoxify the liver and eliminate ammonia from the body

– Improve sexual stamina and enhance recovery from an intense workout

Who might benefit from taking a supplement containing
both citrulline and arginine?

– Anyone who wants to support healthy blood pressure Individuals who want to avoid angina (chest pain)

– Individuals who want to avoid leg pain due to poor blood circulation

– Anyone who wants protection from heart attack and stroke

– Men suffering from erectile dysfunction

– Athletes who want a faster recovery

How are citrulline and arginine related?

As soon as citrulline enters the kidney, vascular endothelium and other tissues, it is converted into arginine. Plasma and tissue levels of arginine increase, which is necessary for the production of nitric oxide and relaxation of blood vessels. An additional benefit of supplemental citrulline is that it helps eliminate ammonia, a highly toxic substance, from the liver.

Will citrulline and arginine help my sex life?

The answer is yes. Arginine has been well studied for its ability to enhance sexual satisfaction. Both men and women report longer and more intense orgasms when their intake of arginine increases. Additionally, arginine is often used by men to achieve long lasting and harder erections. Since citrulline is a precursor for arginine and arginine is a precursor to nitric oxide, you can combine the two for enhanced sexual pleasure and vascular health.

But you’re probably not eating six cups of watermelon every day, and actually it isn’t recommended. Watermelon is high in fructose (fruit sugar) and it’s a natural diuretic, so you’d be spending a whole lot of time in the bathroom.

In addition to watermelon, citrulline is found in cucumbers and cantaloupe, at very low levels, as well as the milk protein casein. But since it is a nonessential amino acid, you don’t have to rely on getting citrulline from food. It is manufactured from other nutrients in your body, however, you only manufacture it if you are young and healthy and producing those other essential nutrients in adequate amounts!

The citrulline and arginine combination plays an essential role in your body

Citrulline, like arginine, is important in vasodilation, the widening of blood vessels, resulting from relaxation of smooth muscle cells within the vessel walls, especially in the large arteries and veins and smaller arterioles.

The endothelium (inner lining) of blood vessels uses nitric oxide to signal the surrounding smooth muscle to relax. This results in a relaxing of the blood vessels, and increased blood flow.

In the body, citrulline is converted to the amino acid arginine, which goes on to make another important substance—nitric oxide. When citrulline enters the kidney, vascular endothelium and other tissues, it can be readily converted to arginine, thus raising plasma and tissue levels of arginine and enhancing nitric oxide production.2

The importance of nitric oxide to healthy blood flow

As stated, nitric oxide is integral to relaxing blood vessels which is necessary for healthy blood flow to the heart and genital area in both men and women, and throughout the body. Nitric oxide helps the blood vessels maintain their flexibility so that the blood flow is unrestricted. This, in turn, helps maintain healthy blood pressure, and a healthy sexual response.

When your vascular system is working efficiently there is less chance that a blood clot will form, which means there is less chance of having a heart attack or stroke.

Nitric oxide helps prevent blood clots because it prevents blood aggregation or platelets from becoming sticky. When platelets are not sticky they can move in a single file through the capillaries.

But if they are sticking together it’s like trying to move a dozen people through a crack in the wall. There is nowhere for the platelets to go, so a blood clot forms.

Additionally, nitric oxide works as an antioxidant that reduces the possibility of immune cells adhering to artery walls. This helps keep down inflammation,
which most health professionals agree is a major cause of the plaque formation that contributes to atherosclerosis.

What inhibits adequate nitric oxide production?

– People who have atherosclerosis, diabetes or hypertension (high bloodpressure) often show impaired nitric oxide pathways.3

– Over-consumption of salt can impair nitric oxide production.4

– Aging—as we get older there is a decrease in nitric oxide production because the body makes less citrulline and arginine.5

Boosting nitric oxide production with nutritional supplements

Supplemental arginine helps the body produce more nitric oxide, and it helps with conditions that improve when blood vessels are relaxed, such as atherosclerosis and intermittent claudication (difficulty walking due to pain in leg muscles because of inadequate blood supply).

Even more importantly, new studies are showing that supplemental citrulline also assists in nitric oxide production by boosting blood levels of arginine. It does this because it is more readily absorbed and bioavailable than arginine alone, and it bypasses metabolism in the liver and gastrointestinal tract and is readily absorbed in the kidneys.6, 7

Citrulline and arginine scientific studies

In the first study to show that oral supplementation with citrulline raises blood levels of arginine, 20 healthy volunteers were given 6 different dosing regimens of placebo, citrulline, and arginine.

After one week of oral supplementation, the citrulline dose increased plasma arginine concentration more effectively than arginine alone.8

A study in humans also showed the citrulline supplementation’s “time release” effect on arginine production. In this study an oral dose of 3.8 grams of citrulline resulted in a 227% peak increase in plasma arginine levels after 4 hours, compared with a 90% peak increase with the same dose of arginine.7,9

Thus, acute oral administration of citrulline appears to be considerably more efficient at raising plasma levels of arginine over the long term than arginine itself.7

Reduces blood pressure

In another recent study, citrulline supplementation was shown to reduce blood pressure in 17 young (average age 21.6 years) men with normal blood pressure after they were submitted to a cold pressor test (CPT). (A cold pressor test is a cardiovascular test done by having the subject immerse his hand into a bucket of ice water for one minute. Blood pressure and heart rate are then evaluated.)

Even more importantly, new studies are showing that supplemental citrulline also assists in nitric oxide production by boosting blood levels of arginine.

The men were randomly assigned to four weeks of oral citrulline (6 grams/day) or placebo in a crossover design. Blood pressure was measured after the blood pressor test. The results showed that compared to placebo, oral citrulline decreased brachial systolic blood pressure (-6 +/- 11 mm Hg), aortic systolic blood pressure (-4 +/- 10 mm Hg), and aortic pulse pressure (-3 +/- 6 mm Hg) during CPT but not at rest, suggesting improved production of nitric oxide under stress.10

Boosts immune system function

Citrulline’s beneficial effects on nitric oxide were also demonstrated in a group of male professional cyclists who took 6 grams of oral citrulline before a race. Researchers found that the racers’ levels of arginine increased, as well as their neutrophil immune cells.11

Citrulline’s enhancement of immunity may benefit endurance athletes as it has long been noted that immune defenses drop after an intense athletic event, increasing susceptibility to infection.12
Pharmaceutical drugs that stimulate nitric oxide production

Of course “Big Pharma” has developed a number of drugs that work to increase the production of nitric oxide in the body, but as usual they don’t work with the body like natural amino acids do and they are loaded with side effects.

Nitroglycerin and amyl nitrite serve as vasodilators because they are converted to nitric oxide in the body.

Sildenafil citrate, popularly known as Viagra®, stimulates erections primarily by enhancing signaling through the nitric oxide pathway in the penis.

But as mentioned, these drugs come with a long list of side effects, including headache, vision impairment, flushing, and rare but serious effects including heart attack and stroke.

Taking supplemental citrulline in combination with arginine is a great way to relax your blood vessels and avoid plaque build-up without drug side effects.
What to look for in a supplement

For each gram consumed, citrulline is more effective at raising nitric oxide levels (in vascular endothelium) than arginine alone. This is because approximately 50% of the arginine gets converted into other amino acids by the intestines and the liver. As the conversion of citrulline to arginine is not immediate, arginine will provide faster results.

As a convenient daily supplement in capsule form, citrulline is the best choice. This is because 6 grams (6,000 miligrams) of arginine is required to gain benefits. For those wanting to avoid swallowing a hand full of capsules, look for an arginine drink mix. Avoid pure arginine powder as the taste is awful, and the pH can burn the throat.

Taken together, you can get an immediate boost of nitric oxide production from the arginine, while allowing the citrulline time to produce additional arginine, for prolonged nitric oxide production.

This one-two punch of arginine and citrulline is a promising treatment for cardiovascular disease involving arginine deficiencies, reduced nitric oxide availability, and vascular dysfunction.

Together, citrulline and arginine supplementation is a natural and safe means of providing your body arginine, both short and long term. This combination can increase the natural production of nitric oxide, help reduce your chances of having a heart attack or stroke, boost your immune system, and improve your love live, all without the side effects of pharmaceutical drugs.
How are citrulline and arginine related?

As soon as citrulline enters the kidney, vascular endothelium and other tissues, it is converted into arginine. Plasma and tissue levels of arginine increase, which is necessary for the production of nitric oxide and relaxation of blood vessels.

An additional benefit of supplemental citrulline is that it helps eliminate ammonia, a highly toxic substance, from the liver.
Will citrulline and arginine help my sex life?

The answer is yes. Arginine has been well studied for its ability to enhance sexual satisfaction. Both men and women report longer and more intense orgasms when their intake of arginine increases. Additionally, arginine is often used by men to achieve long lasting and harder erections.

Since citrulline is a precursor for arginine and arginine is a precursor to nitric oxide, you can combine the two for enhanced sexual pleasure and vascular health.
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Sureda A, Cordova A, Ferrer MD, Tauler P, Perez G, Tur JA, Pons A. Effects of Citrulline oral supplementation on polymorphonuclear neutrophils oxidative burst and nitric oxide production after exercise. Free Radic Res. 2009 Sep;43(9):828-35. Epub 2009 Jul 6.

Abstract ↑
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