What is it in milk that causes acne? I've never had any problems with it (at least I don't think I have), but everybody is preaching that milk causes acne to worsen. I know there are over 250 chemicals in milk making it the most complex substance in existence (so I've read anyway), but has any one certain chemical been pointed out that worsens acne? It makes sense that because a lot of acne is caused by hormone changes and there are gobs of hormones in milk that it would be the milk's hormones causing the problem, but from what I've read the hormones don't survive the gut to be absorbed. I could very well be wrong and if I am for sure then let me know. Damn I love this forum.