This. One of the things about vegetarian diets that rarely gets mentioned is that there are people whose body really profits from meat, while others' don't so m

This. One of the things about vegetarian diets that rarely gets mentioned is that there are people whose body really profits from meat, while others' don't so much (this is why you get a lot of anecdotes like yours, but also a lot of people for which vegetarian diets do wonders). I read somewhere that it may be related to blood type, but I'm not sure about that, and certainly IANA biologist.