The age-old claim that chocolate, greasy foods or dairy products cause acne is simply not founded in science, according to Dr. Alan Gaynor, a San Francisco dermatologist with the Dairy Council of California.
Chocolate's effect on acne has been tested in numerous research studies where patients were divided into two groups: one given chocolate and the other an imitation chocolate bar. None of the chocolate eaters experienced any change in their condition.
"Greasy foods, also implicated as acne promoters, clog the pores only when applied directly to the skin--not when consumed," Gaynor said.
Putting to rest another diet-acne myth, Gaynor says that there is no evidence supporting a causal relationship between milk and acne.