NO: Male bodybuilders fear soy for its isoflavones — but they offer many health benefits. Research indicates that these powerful antioxidants may fight certain types of cancer (particularly prostate, colorectal and breast), lower cholesterol levels and reduce the risk of cardiovascular disease (a rare FDA-approved health claim). However, the chemical structure of soy isoflavones closely resembles that of estrogen. This has caused many a man to worry that the estrogenlike isoflavones will compete