Nutrition is a contentious topic. It's hard to tell fact from fiction. One day eggs are good for you, the next they have too much fat. But what about the keto craze? Doesn't it say you should eat mostly fats? Fortunately, there are scientist like Dr. Kevin Hall who are working to debunk the myths and give us the real skinny on how the foods we eat affect our health. Most recently, Dr. Hall published a study that put two well-known diets head-to-head to see which led people to consume more calories.