Eat your veggies, and your fish, too!

Because red meat causes cancer. But you already knew that.
"Colette Heimowitz, vice president of education and research at Atkins Nutritionals, says low-carb diets don't have to include a lot of red meat. Many low-carb dieters opt for poultry, fish, nuts and tofu instead of beef. To reduce the risk of cancer, she recommends that dieters choose hormone-free meat that has not been charred."