Even if we were to accept the paper's conclusion, we should take into account that for many people a vegetarian or vegan diet is an ethical choice, because they

Even if we were to accept the paper's conclusion, we should take into account that for many people a vegetarian or vegan diet is an ethical choice, because they are concerned about the killing of non-human animals for the purpose of ingesting their carcasses. If a person lives within a community of perpetrators of an on-going mass-killing of non-human animals (that they themselves may have previously participated in), is it then unreasonable to be more likely to display symptoms of mental disorders, such as anxiety or depression? Should we not be distressed by awareness of the pain of others? Claude Etherly, who was piloting Straight Flush, suffered from anxiety and schizophrenia after dropping the bomb. His letter exchange with pacifist philosopher Günther Anders is worth a read[0]. [0]: http://www.history.ucsb.edu/faculty/marcuse/projects/anders/Anders1962BurningConscienceEatherlyOCR.pdf http://www.history.ucsb.edu/faculty/marcuse/projects/anders/...