I've been reading about gut flora and fauna and the role dirt played in gut health and digestion. Well, I work in agriculture and my nails are black with dirt every day. Not that I would ever recommend biting your nails in the third world where I live, but I was wondering if there was an evolutionary reason for people to bite their nails? Does this contribute to increasing gut biodiversity? Does it strengthen the immune system? Of course in modern times, there are so many more viruses, bacteria, and parasites because of the abundance of contact with other humans, but I'm talking about way back in the time of Grok.
No announcement yet.
Is Nail Biting Primal?