Not all vegetarians are created equal

Based on the top-line responses to Purdue University's September report on Consumer Food Insights, efforts to promote a plant-based diet is racking up spectacular success with at least some demographics.

But look again: It's lower-income consumers — designated "thrifty" spenders on food — who are most likely to eschew conventional meat for plant-based proteins.

"This is not entirely surprising given that meat tends to be a more expensive source of protein compared to other vegetarian/…