Most Dermatologists are conservative and are too busy to get updated in every single field of Dermatology. They usually read or hear lectures about the specific specialty they are interested in.
For many years, many of us were skeptic about the relationship of diet to Acne. Nevertheless, an impressive number of recent studies have proven a strong relationship between Diet and Acne - especially for Cow Milk and dairy. Multiple studies suggest that Acne is closely related to the Western diet.
It seems that cow milk and dairy products are high in growth hormones that cause the sebaceous glands in the skin to enlarge and clog leading to more acne breakouts.
Soy milk contains phytoestrogens mimic natural estrogen levels and may cause acne breakouts similar to the ones caused by cow's milk and dairy. Good alternatives to cow's milk are almond milk, rice milk, coconut milk, or hemp milk (learn more about soy and acne as well as other foods that are linked to acne breakouts.)