The beta agonist drug ractopamine (a repartitioning agent that increases protein synthesis) was recruited for livestock use when researchers found that the drug, used in asthma, made mice more muscular. This reduces the overall fat content of the meat. Ractopamine is currently used in about 45 percent of US pigs, 30 percent of ration-fed cattle, and an unknown percentage of turkeys are pumped full of this drug in the days leading up to slaughter. Up to 20 percent of ractopamine remains in the meat you buy from the supermarket, according to veterinarian Michael W. Fox.
Where it’s banned: 160 countries across Europe, Russia, mainland China and Republic of China (Taiwan)
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