Why do all vegans look like they are malnourished?

Because most of them are malnourished. Few bother to learn the rules of proper nourishment so they are suffering from improper eating which makes them look that way. Many of them are not getting enough protein in their diets. Vegans don't eat meat so they have to find another way to replace the missing protein. One has to learn how to do food combining to make a complete protein, for example, when you combine corn and beans this makes a complete protein. Eating just one or the other leaves you with an improper diet. Rice and beans makes a complete protein, but they must be eaten together and alot of them don't bother to learn food combining this is why they are malnoursished. They have to eat enough nuts or whatever protein they choose like food combining, but it has to be equal to the missing meat protein or they are malnourished.

Maybe because they do not eat enough vitamin B and protein that come from meat. Not enough Vitamin B is bad for the nervous system and you can get depression. Also they can get anemia. Vegan people should do a lot of blood tests.

they are missing protien from their diets as well as iron.

most vegans who look this way dont or wont bother with taking supplements to boost those plus they are not recieving a full spectrum of vitamins and minerals. and yes not eating properly can cause magor mood swings.

how many do you know? i know three and they are extremely healthy and happy people. by the way- logic? where is yours coming from? i am sure you are going by a couple people that (wont eat meat) you have met. they might be malnourished.

They need protein & iron from meat!

I've never know that to be true. Maybe you just know a bunch of anorexics