Medically reviewed by Jamie Johnson, RDN Many people follow low-carbohydrate diets to lose weight or manage their blood sugar ...

After all, our ancestors were healthier than we are, right? Enter the carnivore diet meal plan — which is pretty much what its name implies, lots of meat products and no carbohydrates.

There is no long-term research, only anecdotes about the purported benefits of the carnivore diet. Meat is a good source of protein, vitamins, and minerals, but it lacks fiber and vitamin C.