Atrial fibrillation (AF)

[Pegasus]

Among elderly adults, consumption of tuna or other broiled or baked fish, but not fried fish or fish sandwiches, is associated with lower incidence of AF. Fish intake may influence risk of this common cardiac arrhythmia.
What is interesting here is that fish oil does . The reason is unknown why fish doesn't have this issue and fish oil does is unknown . My personal theory ( with no real evidence btw ) is that fish oil is commonly rancid which doesn't seem to affect most of it's positive qualities but now this pops up hmm .

 

[Pegasus]

So to restate fish oil increases AF eating fish decreases it .

 

[Johnny D]

I really struggle with these findings and haven't found any research that concludes a causal relationship. That's the case for 99% of these cohort studies that use self-reported data and don't control for other dietary factors. There are so many potentially confounding variables that all they can do is make an association that doesn't inform on risk or causality whatsoever.