Originally Posted by
noglider
I appreciate all of the breadth of input here.
A cousin of mine says his health improved a year or two ago, and he lost his excess weight. I think he's younger than 40. He attributes it to what he calls a carnivore diet. I don't know the details of his diet but I think he eats some plant food but not much. I suspect his health and weigh improved because he (probably) switched from crappy food to fresh whole foods. Eating mostly meat sounds crazy but it's working for him. Maybe it won't work out for him long-term, and maybe he'll realize he needs the fiber and vitamins and minerals in plant foods, but so far, it's an improvement for him. I'm not recommending whatever it is he's doing, just giving another perspective.
You described it yourself! It is a diet that is solely based on animal protein and fat. From a physiological standpoint, this is one of the simplest nutritionally complete diets that a human could be on, with an asterisk on Vitamin C. I think it can be a good way to reset your body if you need to, you start from a baseline, and then add in more food items and observe what works or not.