You got it there other way around. It was Europeans who evolved for the consumption of milk (likely due to the environment/diet) while the rest of the world did

You got it there other way around. It was Europeans who evolved for the consumption of milk (likely due to the environment/diet) while the rest of the world didn't, like other mammals. The production of lactase to digest lactose drops as adolescence approaches. I guess you could flip the hypothesis and suggest maybe East Asians didn't (have the time to) evolve to digest alcohol sufficiently and hence the Asian flush. /joke