Dietary similarity of friends and lovers: Vegetarianism, omnivorism, and personal relationships

In a series of studies conducted in the USA and Poland, we found that vegetarianism can serve as a basis for the formation of personal relationships. Consistent with research on the similarity-attraction effect, we found that vegetarians were more likely than omnivores to have friends and lovers who were vegetarians. In study 1, vegetarians reported that their diets were a more important part of their identities than omnivores did. In studies 2,...