A new study has revealed that a high protein diet can reduce acne by 50%. A team in Australia has carried out the study and found that a high protein based, low GI diet could have a dramatic effect on acne symptoms, the journey of the American academy of Dermatology reported. They say that diet has long been thought to be the cause of acne with chocolate, most often named as a culprit, but I was surprised how little scientific research had been done in this area. A low GI diet significantly reduced acne lesion counts when compared with the conventional high-carb, high-GI western diet.