Are restrictive diets, such as vegetarianism and veganism actually not so healthy for the body? For example, if someone goes on a restrictive diet, they could be cutting out nutrients that the body needs. My physician said that he has never seen a healthy vegetarian or vegan. I am not saying that restrictive diets are wrong, I am just trying to make conversation. And please no insults or offensive comments. That's right people, I'M STARK MAD. They say that there is a fine line between insanity and genius though...
Actually, I know plenty of vegetarians (though I don't know if any are vegan). They seem to be about as healthy on average as omnivores (although in the US, this might not be a very high standard). Most of the vegetarians come from cultural backgrounds where vegetarian diets are common.
Of course, a diet being vegetarian does not make it healthy or unhealthy. A diet full of junk food is unhealthy, whether or not it is vegetarian. Vegetarians and omnivores both would be healthier eating lots of vegetables.
The only essential nutrient that comes only from animal sources (and is therefore needed to be supplemented by those with vegan or near-vegan diets) is vitamin B12.
A restrictive diet can be harmful if taken to an extreme, as in anorexia. I think most anorexics are vegans but not all vegans are anorexic. So vegans tend to get a bad rap by doctors who have had some contact with anorexics.
They might think, "here we go again, I have another anorexic on my hands".
I think the average American diet restricts healthy vegetables. If we're going to be restrictive, let's restrict processed foods!