>This is why I am very hesitant to offer ANY specific prescriptions for what to do about your gut biome. The advice to eat dirty vegetables or even start walking around barefoot in the dirt or drinking pond water or whatever "natural" activity you can think of is VERY DANGEROUS.
>The reason is not all parasites are "old friends", only some of the ones that are commensals that we co-evolved with. Getting toxoplasmosis from a cat, or a zoonotic helminth from dog shit or a dead raccoon or a pig tapeworm will do your immune system no favors and could even kill you.
>DO NOT PLAY AROUND WITH THIS CONCEPT UNLESS YOU ARE ABSOLUTELY CERTAIN WHAT YOU ARE DOING.