Milk, Hair, and Skin: Does It Really Cause Skin Problems?

“Watch out for milk—it causes acne” is a very common piece of advice online. But the reality is more complicated—not all women are affected by dairy, and cutting out a nutritious food without a reliable reason is a decision worth thinking through.

Three major studies have found a link between milk consumption (especially skim milk) and acne. The proposed mechanism: Milk stimulates the hormone IGF-1, which activates the sebaceous glands. Skim milk is more strongly associated with acne than whole milk—contrary to intuition. However, correlation does not imply direct causation. Many people drink milk and never suffer from acne.

The Elimination and Reintroduction Method: Stop eating all dairy products for four full weeks. Monitor your skin—has your acne decreased or disappeared? Reintroduce milk—did the breakouts return? If the answer is a clear yes: your body reacts to milk. If nothing changed: milk isn’t your problem, and there’s no need to cut it out.

Oat, almond, or soy milk: Plant-based alternatives that do not contain dairy hormones. Fermented products: Yogurt and fermented cheese may have a lesser effect than fresh milk. Amounts: Moderate consumption is different from overconsumption—one or two servings a day is different from a liter. The good news: Studies show that cheese, butter, and cream have a weaker association than liquid milk.