>A third-of people abandoned their animal-free diets in three months or less, and more than half abandoned it within the first year.
Are you really a vegan or vegetarian if you break in 3 months? In 1 year? Wouldn't it be more accurate to say that 1 in 5 people who attempt to go vegan/vegetarian succeed?
I'm a vegan and I'm active in my local vegan/vegetarian community. There are two camps: people who do it for ethical reasons and people who do it for for health. People who do it for health usually give up and move on to whatever fad diet becomes popular. People who subscribe to the ethics rarely quit. We have a saying: there's no such thing as a former vegan. Just someone who tried the diet.