Ya learn something new every day...

Ya learn something new every day...  I love milk.  I drink a lot of it, as does Debbie.  I've long known that there are quite a few adults who can't digest lactose, and consequently can't drink milk.  I didn't know, though, that the ability for adults to digest milk is a relatively recent genetic change for humans.  Nor did I know that cultured milk products (cheese, yoghurt, etc.) were initially developed to allow lactose-intolerant adults to consume milk products – because the fermentation process pre-digests all the lactose...