I mean, I have tried that, as well as every diet I could think, of including Elimination Diets and none seemed to have any effect. I do eat really healthy still of course, and mostly vegetables. Acne can be a sign of lots of different things though, people are different and everyone has a different story on what cured them. Some clear up with no dairy or no gluten or just eating better. Some people are allergic to something and it shows up as acne. Switching from tap water to fluoride free water and fluoride free toothpaste helped me quite a bit, which makes me wonder if it's halide related, but I mean, I don't know. Thanks though, I'll definitely check out that book, looks good. I had read somewhere that Acne can sometimes be a symptom of Iodine deficiency, I just haven't seen much of anything to back it up.