Yeah, you need to be able to produce the lactase enzyme yourself to avoid having your gut bacteria be the ones to break down lactose (and thus produce indigesti

Yeah, you need to be able to produce the lactase enzyme yourself to avoid having your gut bacteria be the ones to break down lactose (and thus produce indigestion). On the idea that your microbiome can take a long time to recover from elimination diets: 1) From a gastrointestinal morphology perspective, we are opportunistic scavengers, so our whole biology is directed around sporadically eating just about anything. 2) I've seen several studies showing that, for the most part, our gut microbiome radically reshapes itself within a matter of days in response to major diet changes.