[PsychologyToday] ... I was surprised to learn from a new review article by Daniel Rosenfeld of Cornell University in the journal Appetite that reported vegetarians are more likely to be depressed than meat-eaters. Intrigued, I took a deeper look at this body of research. I located 11 peer-reviewed papers on the topic published between 2007 and 2018. Rosenfeld was right. Here’s what I found in each of them:
Followed by theorizing. Of course, one could just go to Google Scholar and type "meat, chimpanzee"