I think this would be pretty difficult to study since there isn't "one" vegan diet. It differs radically depending on where someone is and what they choose to e

I think this would be pretty difficult to study since there isn't "one" vegan diet. It differs radically depending on where someone is and what they choose to eat and the complexity of food distribution. On the surface removing meat, diary and eggs from your diet is definitely better for the environment and you can easily find scientific studies to back this up. I find the problems start to arise when you take into account what kind of fats and proteins vegans are supplementing with, eg a vegan living in Scandinavia that's buying imported avocados from South America is probably having a considerable environmental impact by doing so.