Google's AI Overview is telling people they should eat at least one small rock a day

[Retrograde]

8. Salt grains are very very small rocks

sort of, so those should count.

Does dirt count? There is a psychological condition called pica, in which people eat non-food objects. Very young children - usually less than 2 years old - will occasionally eat dirt with no apparent ill-effects, but they usually outgrow this quickly.