I think the obvious caveat here is that many people can’t do this because they have restrictions that have taken them away from the mean. For example, allergies, sensitivities, and ethical or cultural restrictions on what they eat. They can do a limited version of the intervention of course (for example, if only eating plants, eat all the plants you don’t eat now and stop eating the plants you currently eat), although I wonder if that would have similar effects or not because it’s already so constrained.
I think the obvious caveat here is that many people can’t do this because they have restrictions that have taken them away from the mean. For example, allergies, sensitivities, and ethical or cultural restrictions on what they eat. They can do a limited version of the intervention of course (for example, if only eating plants, eat all the plants you don’t eat now and stop eating the plants you currently eat), although I wonder if that would have similar effects or not because it’s already so constrained.