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A Naturalistic Ethic Supporting A Vegan Diet, Michael Morris

Between the Species

Nutritional evidence suggests that a vegan diet is the most adaptive one for humans. An ethical principle based on following our biological nature (naturalistic ethic) could therefore provide additional support for a vegan diet. However, some argue that humans in the natural world could not eat a vegan diet, since it relies on supplements, particularly vitamin B12. This leads to the conclusion that humans are naturally omnivores, and therefore our natural diet should include small amounts of animal products.

Three approaches to this conclusion are discussed. The first rejects a naturalistic ethic in favour of normative principles based on animal …