Dimtree·il y a 7 ans·discussAs a counter-counterpoint, you assume OP's ethnicity is Northern European just because he lives in the UK.
Dimtree·il y a 7 ans·discussI think you're missing the most common reason. Up to 65% of the global population is lactose intolerant to a degree.https://ghr.nlm.nih.gov/condition/lactose-intolerance