QUOTE(Doberwoman @ Aug 27 2004, 12:31 AM)
Diet made a HUGE difference to my acne.
Warning: a bit graphic:
I went from having cystic acne with pretty much every pore infected, great big purple scars all over my face and purple gel that would sometimes squirt out (once unaided -- just the pressure build up alone caused one to explode!) to having comparatively clear skin just by changing my diet.
I'd been on antibiotics for years, but whenever I'd stop taking them, the acne would come back.
About 15 years ago I found the diet in a book called "Acne can be cured" and basically it involves avoiding all saturated fat (there's lots of hidden saturated fats in food, so it isn't necessarily that easy to follow if you prefer to buy processed foods or don't know what to look out for). I've heard other people say that avoiding sugar helps with their acne, but I ate a reasonable amount of sugar on this diet, so it may be that different people have different dietary requirements. It may be also though that I was eating less sugar by not eating any processed foods (I pretty much ended up eating wholegrains, vegetables, fat-free yogurt, fish and occasionally skinless chicken breast, and only used olive or low saturate veg oil as a fat -- but I did make my own fat-free desserts which would have sugar in them).
The Perricone acne diet also sounds very good, and it matches a theory I've had for a while that acne is an inflammatory response similar to atherosclerosis (but that's a whole 'nother post!)

Oh yeah I respond to ADDED sugars, certain grain carbohydrates (gluten), and trans fats. Fats & Carbs definately play a role in the formation of my acne & pores, and both of them can contribute to cholesterol & heart problems in the long run. I purchased that book that you mentioned and have only skimmed through it but yeah, it focuses on fats and doesn't eliminate other foods that I do. Yet, like you said who knows why it worked so well, was it because it eliminated the saturated & trans fats, or because it eliminated added sugars & refined carbohydrates? Heck it probably worked because it did both ;-)