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Pimples still rearing their ugly heads? The fault might lie in your diet, according to a new study in the March 2013 issue of the Journal of the Academy of Nutrition and Dietetics. Combing through 50 years of literature that investigated the diet-acne connection, a team of nutritionists and dermatologists from New York University and New York Medical College analyzed data for a number of study characteristics, including reference, design, participants, intervention method, primary outcome, results and conclusions, covariate considerations, and limitations. Their conclusion? Frequent consumption of high-glycemic-index foods (white bread, pasta, rice, glucose drinks) and dairy may not necessarily cause acne, but they will almost certainly influence or aggravate it.