These hormones are illegal for athletes to use, but legal for farmers. If that's not bad enough, consider this - about half of all antibiotics in the US are used in food animals. I lived in Puerto Rico some years back, and when I found out about the very high level of penicillin in the milk. Most of the cows there are tuberculin. This factor of antibiotic use in our food is one of the prime factors facing us with bacteria becoming resistant to antibiotics.
Antibiotics are way overused and even abused by the medical profession as well as by food producers.
In cows,pigs,and sheep, the hormones and antibiotics and other chemicals ingested by these animals is found largely in fatty tissues. As we eat these meats, we get these chemicals as well. Chickens are no longer the chickens our grandparents knew. This results in much more fat and much more chemical input in this fat. When my wife and were cruising around the Caribbean, and getting food in native markets, the difference in taste amazed us.