One single glass of milk can contain up to 20 different kinds of painkillers, antibiotics and growth hormones

"Farmers are prohibited from selling milk for human consumption from cows that have been medicated with antibiotics (as well as other drugs) until the withdrawal period is over; so instead of just disposing of this tainted milk, producers feed it to their calves," says the report, sounding more like an animal rights group than the U.S. government. "When the calves are slaughtered, the drug residue from the feed or milk remains in their meat, which is then sold to consumers."