Reality: There is no proven link between diet and acne. Chocolate, French fries and other junk foods, while not exactly healthy, aren’t going to cause acne.
Bacteria have a greater impact on breakouts than your diet. The bacteria responsible for inflamed acne breakouts are Propionibacteria acnes (P. acnes). P. acnes are routinely found in the follicles of most skin. When the P. acnes population grows out of control it can trigger redness, inflammation and the formation of pus.
Although a few recent studies show a possible link between certain foods acne severity, there is no evidence that any food actually causes pimples. So, enjoy an occasional treat without worrying about what it’s doing to your skin.