>>69890408Mainly because those stats are kinda weird.
In some of the studies those numbers are based on, you'd be considered lactose intolerant if you get a bit of a stomach ache after chugging a gallon of milk while in others you'd have to be shitting and puking after a couple glasses. That, together with limited participation in some areas, has led to cases where the only study done in some places states that all fifty people we asked reported having felt some symptom at some point so the rate of lactose intolerance is 100% there.