Red meat is any meat from a mammal, including beef, pork, mutton, lamb and goat. These meats should only be eaten in small or moderate amounts because they are linked to colorectal cancer, heart disease and diabetes.

How you cook your red meat also matters. Some techniques create carcinogens that further increase your risk for colorectal and other cancers.

When red meat is charred or smoked, for example on a charcoal grill...