If you'd check some of the medical literature on this stuff, you'd find that there is indeed a link between the two. If you check on testosterone supplementation, even for people who are test deficient; you'll find that hypertension (elevated blood pressure), cardiomegaly (enlarged heart), strokes, as well as changes in cholesterol levels (decreasing HDL --which is the good type; and increasing LDL --- the bad type) have all been associated with being on supplementation.
As for Atrial Fib, it can be caused by quite a few things. Hypertension and cardiomegaly are two of the direct causes of Afib. So, since he is otherwise healthy, and not on any other stimulants, and has otherwise normal heart function--- I'd say it was due to the gear. But, believe what you want.....I'm just saying it's highly likely not just a coincidence; and I think he's making a wise choice to stay away from it for awhile.
As far as saying that docs would stop prescribing steroids due to these risks.... ummm ...that's why we have patients come back frequently to get checked out; and if they are having problems, we change the medicines.
