I Knew Our Parents Were Lying! (page 2)
Eating chocolate causes acne
Another diet-related claim that parents may use to encourage image-conscious youths to observe a healthier lifestyle, the notion that chocolate can cause spots is based on the idea that fatty foods cause increased production of sebum in the skin. This increased sebum in turn blocks the pores, causing acne. However, no study has been able to prove this link, and hormonal changes and your natural predisposition toward oily skin are the real determining factors. Of course, that does not mean eating chocolate won’t cause other problems, but spotty skin is not one of them.