He ain't the first bber to die of a heart attack and certainly not the last.
Steroids cause clotting, and exacerbate the problem by messing with cholesterol (thus causing plaque formation and voila, clots stuck). Not only that, but he did clen, which is proven to cause necrosis of heart tissue. That certainly doesn't help. Also this happens over a period of years and decades.
Keep getting bloodwork, and you'll be fine. Hopefully, lol.