A review of hundreds of studies did not find a single one linking rBGH with increased ill health in cows. These residues cause impairment of the immune systems of children who drink the milk and encourage the development of antibiotic-resistant strains of bacteria. There is a small positive association between milk yield and mastitis. Furthermore, the FDA requires that any animal treated with antibiotics be kept out of milk production during the treatment period and for a certain period of time after treatment has ended. The Insulin Growth Factor in milk does not pose a risk, because it is a protein and is digested like all other dietary proteins.
Digestion destroys any hormonal activity.
Cows receiving rBGH eat more, but the nutrient composition of the diet does not need to be modified. Giving cows rBGH increases the fat content and decreases the protein content of their milk and shortens its shelf life. Giving cows rBGH does not change the composition or wholesomeness of their milk in any way, nor does it affect the amount of rBGH found in the milk. According to Cindy F. Kleiman, Coordinator of Toxicology Projects for ACSH, the real agenda of the NY Greens can be seen in their statements on the immorality of agribusiness and their unfounded claims that the use of bio-engineered products disrupts the ecological balance of the planet. In fact, injected rBGH is safe.