New research from the World Health Organization found red meat to be a potential carcinogen linked to colorectal, prostate, and pancreatic cancer. That’s probably more than enough to kick a cheeseburger habit, but the immediate risk to your heart health solidifies this as a red-flag food. Gilbert says it only takes one or two servings of red meat a week to take you over the limit on saturated fat. The better choices are fish and lean meats like turkey or chicken. Boost flavor and keep turkey burgers juicy by choosing a 93% lean ground meat and adding onions, peppers, and spinach to the patties.