You might've heard a friend complaining about their latest break-out and swearing off dairy products as a result. Or that friend might be you.

It’s a common complaint, but does it have any scientific merit?

Norman and Tegan explore whether consuming dairy can cause acne, and if so, how a glass of milk might lead to pimples.

References:

• The Influence of Genetics and Environmental Factors in the Pathogenesis of Acne: A Twin Study of Acne in Women
• Patient Perceptions About Acne, Nutrition, and a Dietary Information Gap 
• Diet and acne: A systematic review
• Can the right diet get rid of acne? - American Academy of Dermatology Association 
• High school dietary dairy intake and teenage acne
• Effect of Chocolate on Acne Vulgaris - 1969
• Double-blind, Placebo-controlled Study Assessing the Effect of Chocolate Consumption in Subjects with a History of Acne Vulgaris