Here's a list of Peer Reviewed Studies and Papers that Illustrate the Relationship between Diet and Acne.
Role of insulin, insulin-like growth factor-1, hyperglycaemic food and milk consumption in the
pathogenesis of acne vulgaris http://www.ncbi.nlm.nih.gov/pubmed/19709092
Takeaway: The hormone IGF-1 is stimulated by insulin and in dairy and is a major factor in acne formation.
Short-term isotretinoin treatment decreases insulin-like growth factor-1 and insulin-like growth factor binding protein-3 levels: http://www.ncbi.nlm.nih.gov/pubmed/20128787
Takeaway: Isotretinoin, aka Accutane, works by decreasing IGF-1, which you could instead reduce by avoiding a high glycemic diet and by limiting dairy neither of which have dangerous side effects.Insulin & Glucose role on Sex Hormone production http://www.ncbi.nlm....ist_uids=193114
This is a study on men with heart disease, but resulted in one of the earlier discoveries in the relation ship between insulin and hormones.
Takeaway: Insulin and glucose stimulate hormone production. Excess insulin and glucose means excess hormones.
This is a Study on the relationship between acne and prostrate cancer. Because many of the same hormones, IGF1 and Androgens are involved in both conditions. The researchers discuss the role of diet on these hormonesDiet, serum insulin-like growth factor-I and IGF-binding protein-3 in European women
Takeaway: Once again, another study finds diet affects the hormones involved in acne.
Decreased serum insulin-like growth factor I response to growth hormone in hypophysectomized rats fed a low protein diet: evidence for a postreceptor defect
Diet, insulin-resistance and chronic inflammation
Acne and chronic inflammation (and Delayed Type Hypersensitivity (allergy)
Inflammation and insulin resistance
There's a growing renewed interest in the diet acne connection and that in addition to studies on acne, they utilize data on other conditions with known connections to the factors involved in acne:
Other article summarizing some connections
Study on diet affecting PMS