As a counter-counterpoint, you assume OP's ethnicity is Northern European just because he lives in the UK.
I 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
As a counter-counterpoint, you assume OP's ethnicity is Northern European just because he lives in the UK.
I 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