hormones in meat and dairy production to “make young animals gain weight faster. They help reduce the waiting time and the amount of feed taken by an animal before slaughter in meat industries. In dairy cows, hormones can be used to increase milk production. Thus, hormones can increase the profitability of the meat and dairy industries"
Milk 101: Whole, Raw, Organic, Low-Fat, Etc...explains why low-fat/skim milk is really not a healthy choice