Moving this here to complete later:
Growth Hormone Residue in Dairy and Meat Products
In response to the question "Should I be worried about HORMONES in my food?," CommonGround answers, "Growth hormones are sometimes used in meat and milk production to safely increase milk output per cow and produce leaner meat. According to the World Health Organization (WHO) and FDA, you should not worry about finding any hormones in your food. With milk, pasteurization destroys 90 percent of hormones. The rest of the hormones are broken down during digestion. No differences exist between milk produced by hormone-treated and untreated cows. In the case of beef cattle, hormone use has been found safe by scientists all over the world. Residue levels of hormones in food have been demonstrated to be safe and well below any level that would have a known effect in humans."