Finally we have a study confirming what we have always known, that diet is related to acne and that sugar and dairy are the major culprits!

In the study, 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, in new research.

Their study included 248 volunteers aged 18 to 25 years old. The participants reported on the severity of their acne, what they eat each day, and also which foods they thought might exacerbate their acne.
The patients with acne reported consuming more sugar, 199 g/day, compared to 56.4 g/day for those without acne (p<0.001).

They drank more milk (0.7 vs 0.3 cups), and they ate more trans fats (9.6 vs 2.4 g/day) and more saturated fats (31 vs 15.6 g/day) (p<0.001).

Those with worse acne also reported eating less fish than those without acne: 0.2 vs 0.7 ounces (p<.002).

J Acad Nutr Diet 2014.