Do you think the same could be said of lactose intolerance?
Possibly but I haven't read anything on lactose intolerance specifically.
Seems very similar in situation to me but nobody cries when they're lactose intolerant they avoid milk. Same could be said of Asians that do produce enough Dehydrogenase so two drinks and they're vomiting where as someone Irish can have 12 or more and be fine.
Germans are completely lactose tolerant, moreso than any other European racial group. Wish I could find the article on European domestication. If I recall correctly Poles experienced the most rapid change in skull shape. Interesting stuff.
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