I just wish the "evangelists" would stress "for some people" when they talk about these diets.
Some people stay healthy and trim on a low-fat diet. Some people do much better on a low-carb diet. Some people are physically harmed by eating meat (http://www.mayoclinic.com/health/gout-diet/MY01137).
Unfortunately we just need to experiment a little as individuals to find what works best - and hope for a day when we doctors/scientists can recommend diets based on genetic traits.
Some people stay healthy and trim on a low-fat diet. Some people do much better on a low-carb diet. Some people are physically harmed by eating meat (http://www.mayoclinic.com/health/gout-diet/MY01137).
Unfortunately we just need to experiment a little as individuals to find what works best - and hope for a day when we doctors/scientists can recommend diets based on genetic traits.