Here's my first: by what mechanism has anybody proposed that the acquired effects (temporary and/or permanent) of the substances in question could be inherited by the offspring of those who ingested them? If such a hypothesis could be supported, I know a guy named Lamarck who would be really happy, wherever he may be.
I don't question the possible benefits of various, erm, "foods,"
but in order to affect evolution, they would have to affect the genetic transmission of traits to offspring in some way that improved their reproductive success.
™ Version 4.2