Not true. Vegetarians and even vegans have been around in Asia for hundreds of years, or even longer. (My grandma used to be vegan lol) Very few people could afford meat, and yet Asian cuisine is the healthiest one in the world, and the countries with highest life expectancies are mostly Asian too. Coincidence? I think not.
Just because Westerners aren't used to it, doesn't mean it's generally unhealthy or impossible or that we're not "meant for it".
But oh well. Each to their own.
In Asia, the crops aren't mixed with GMC's and other preservatives either. They're usually cheaper than American stock. Here, it's cheaper to buy meat than vegetables. I can't afford lettuce or oranges here, while I can buy a bag of chicken.