It has come to my attention that there are some indications that high dose fish oil (Omega 3’s, EPA and DHA), sometimes are associated with more arrythmias. There is a great scarcity of testing of EPA separately from DHA. I was consuming up to two grams triple strength triglyceride type fish oil, so I reduced that to one 3X EPA/DHA per day, and started taking one 500 mg EPA only also (Igennus, from England). I did have some instances of fast heart rate, up to about 130 BPM, and after some trial and error, found out that my tachycardia(?) was apparently triggered by as little as one five ounce glass of red wine. I have not consumed any alcohol in over one year, with no heart problems. I have just recently discovered Berberine, a very powerful supplement, which seems to slow my heart down a few BPM to about 60.
https://www.cedars-sinai.org/newsroom/omega-3-supplements-could-elevate-risk-of-atrial-fibrillation/
omega 6/3 ratios of near 1/1 are characteristic of people in the blue zones around the world. blue zones are area that have high concentrations of centenarians. If you don’t eat fatty fish like sardines herring mackeral and salmon daily then you have to take 3-4 grams of omega 3’s daily.