My kid grew out of his dairy allergy, and now is lactose intolerant. He’s happy as can be that he can have real ice cream, and accepts the consequences, now that they’re not deadly

Lactose tolerance is the ability to process a particular sugar. Allergies are adverse reactions to specific proteins.

My guess is that most people (from lactose tolerant populations) with dairy allergies are probably lactose tolerant, it’s just not useful to them.

I was lactose intolerant first (and still am, probably), but yeah, definitely.