Cow’s milk growth hormone won’t alter human growth

In the United States, about 17 percent of cows are treated with bovine growth hormone, called rBGH, which increases milk production. The milk produced from these cows has no more growth hormone than milk produced from cows who are not given the hormone. Further, growth hormone is not well-absorbed, and bovine growth hormone is not active in humans. So, there is no effect from cows treated with this hormone in terms of height of human children.