Milk might be good for bones, but it is not as useful for your skin. Nowadays milk is full of growth hormones. Even after pasteurization these growth factors remain biologically active. It has been proved that they get into our blood stream and immediately affect insulin, ramp up oil production and cause inflammation. It all results in breakouts. If you cannot exclude milk from your menu, opt for organic milk where there are no added hormones. However, more of detailed research is needed in order to determine whether organic milk has a negative impact on complexion.