The calcium that comes from dairy products is essential to a healthy body but if you’re noticing increased breakouts, you could be reacting to the hormones that are in the milk.   A study conducted by a team of scientists at Harvard and published in the Journal of the American Academy of Dermatology found that the hormones in milk can lead to increased acne. As dermatologists, Dr. Rodan and Dr. Fields believe the most reliable way to get calcium and vitamin D is from supplements. But if you can’t live without dairy products, go organic to avoid the potential problems that come from the growth hormones in non-organic products.