Hi there, it sounds like you have already gotten lots of great advice but I would like to make a small addition.
Simply put, I think that the best defense against acne is the knowledge of how it is made. Intense fasting and massive diet changes will have other impacts that should be considered a last resort (in my opinion). If you want to know more about acne check out my web site, I have some tips and I have reviewed some of the treatments out there. Don't resort to massive life change unless you have to, often (in my case this is true) simply applying an acne treatment will work.
I hope that my site helps you out.
Best wishes,
Shamus
Acne Cures & Treatment