It’s important to know that antibiotics, pesticides, growth hormones and GMOs are allowed in the American food supply. There is conflicting information on the safety of these additives, so it’s important to sort through the information and make the choice that’s best for you and your family. Two growth hormones that you may have heard of are rBST and Ractopamine. Bovine somatotropin, or BST, is a protein hormone naturally produced in cattle. Monsanto developed a genetically engineered version, rBST, that came to market under the brand name Posilac in 1994. 
The goal of rBST is to boost milk production, as a cow injected with it can make around 10 additional pounds of milk per day. There is evidence that human consumption of meat treated with rBST may lead to higher levels of the IGF-1 hormone (Insulin-like Growth Factor) in our bodies, which significantly increases the risk of colorectal, breast and prostate cancer. In addition, 80% of antibiotics used in the United States are fed to animals that are slaughtered for our consumption. This is contributing to increased antibiotic resistance and is creating a human health crisis.
Documents reveal how poultry firms systematically feed antibiotics to flocks
Pervasive use fuels concerns about impact on human health, emergence of resistant superbugs
Major U.S. poultry firms are administering antibiotics to their flocks far more pervasively than regulators realize, posing a potential risk to human health.
Internal records examined by Reuters reveal that some of the nation’s largest poultry producers routinely feed chickens an array of antibiotics – not just when sickness strikes, but as a standard practice over most of the birds’ lives.
In every instance of antibiotic use identified by Reuters, the doses were at the low levels that scientists say are especially conducive to the growth of so-called superbugs, bacteria that gain resistance to conventional medicines used to treat people. Some of the antibiotics belong to categories considered medically important to humans.
The internal documents contain details on how five major companies - Tyson Foods, Pilgrim’s Pride, Perdue Farms, George’s and Koch Foods - medicate some of their flocks ...
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