Nausea from eating meat might be a reaction to bacteria in the meat, or it might be something in your body rejecting the meat. For example, pregnant women often find that eating too much meat makes them nauseous. If you feel nauseous between 4 and 36 hours after eating meat, then you may have some form of food poisoning. If you start to experience cramps or serious nausea, visit a doctor as soon as possible. Food poisoning from meat usually happens when the meat contains harmful bacteria.
Unrefrigerated, old or poorly cooked meat is more likely to contain bacteria, including harmful strains such as C. botulinum or E. Coli. Nausea is a common symptoms in most forms of food poisoning, though the degree of nausea might vary. Other symptoms may also accompany your nausea, some of them potentially serious. In the case of eating a "bad" piece of old meat with no dangerous bacteria, you may still feel nauseous.
