He is a very popular speaker at the annual Summerfest of the North American Vegetarian Society and other vegetarian conferences. He has recently been speaking out on environmental threats related to animal agriculture. He is an advisor to several vegetarian groups on health and environmental issues. The practice of pure vegetarian nutrition is an established and growing reality. People around the planet are thriving on a vegan-style diet, having healthy babies and raising children, as they have done throughout history.
All red meat contains saturated fat.
There is no such thing as truly lean meat. Trimming away the edge ring of fat around a steak really does not lower the fat content significantly. The human body has no more need for cows' milk than it does for dogs' milk, horses' milk, or giraffes' milk. The human body has absolutely no requirement for animal flesh. Nobody has ever been found face-down 20 yards from the Burger King because they couldn't get their Whopper in time.