Research suggests that meat from industrially raised livestock fed growth hormones, antibiotics, and unnatural grain feed contains harmful chemical residues and fewer nutrients. Meat from cows that eat a high-grain diet, for example, is lower in omega-3s and CLA, a fat thought to reduce stomach fat and help prevent cancer. For these reasons, eating naturally raised or wild meat is important, as is consuming organic or locally grown produce without fertilizers, pesticides, or genetic modification.