Sugar and milk promote acne
Recent observational and experimental evidence
A data collected in New York City between January and May 2012, suggests that diet may contribute to acne prevalence. A total of 248 (115 male, 133 female) participants, age 18 to 25 years, completed questionnaires designed to measure self-reported acne severity, select dietary factors, food-aggravated acne beliefs, acne-specific quality-of-life, and anthropometric and demographic characteristics. The Block fat/sugar/fruit/vegetable food frequency questionnaire assessed usual dietary intake. Young adults with moderate to severe acne reported consuming foods with a higher glycemic index and more sugar and dairy than those with little acne.
Burris J, Rietkerk W, Woolf K. Relationships of self-reported dietary factors and perceived acne severity in a cohort of new york young adults. J Acad Nutr Diet. 2014 Mar;114(3):384-92.