what in milk causes acne
Because the lactose is typically not what causes acne. (It may cause diarrhea, but not acne!) It’s typically other ingredients found in milk, suach as whey, casein, IGF-1, and growth hormone (GH), that cause acne, not the lactose. (Geek note: Lactase is an enzyme that breaks down lactose, the primary sugar in milk.
Ditto for dairy. One study examined the diets of 47,355 women and found a positive link between milk and acne. That's because the majority of milk we consume is produced by pregnant cows, meaning there are high levels of hormones present. That can be an open invitation to oil secretion, breakouts and acne.