Perhaps I spoke hastily when reporting those figures for vegetarianism/veganism. This 2010 study found that, worldwide, “there are one and half billion vegetarians. Only 75 million are vegetarians of choice, a number that will gradually grow with increasing affluence and education. The other 1,450 million are vegetarians of necessity. They will start to eat meat as soon as they can afford it.” There are loads of data on the share of American vegetarians in the study too, but they frighten and confuse me; parse them at your own risk. Meanwhile, this 2017 study reports that “6% of US consumers now claim to be vegan, up from just 1% in 2014.” If that’s true, then the share of vegetarians would likely be much higher, right?