Milk has nutrients that promote growth in children, including whey protein, casein protein, calcium, and phosphorus. Researchers from the University of Copenhagen in Denmark found that whey and casein stimulated growth by diverse mechanisms. Whey protein increased blood insulin, which is an significant hormone for moving amino acids into cells and stimulating protein synthesis. Casein increases insulin-like growth factor , which is a potent growth-promoting hormone that affects tissues all over the body. The study examined the effects of modified milk products that were high in whey or casein and had high or low quantities of milk minerals. Whey and casein in milk increase growth-promoting hormones, while milk minerals have no effect on anabolic hormones.