BBC 紀錄片,裡面有講到 Steroid 污染,乳清淡白不含蛋白等報導。 網路上還有其他重金屬過量的研究。
livescience 的報導, Most supplements on the market haven't caused problems, but there is less oversight of supplements sold in the United States than of prescription drugs. In their joint statement, the American Dietetic Association and the American College of Sports Medicine noted some cases of protein supplements also containing anabolic steroids.