Unexpected to see Armenia and Azerbaijan so high up there. And the fact(?) that a 100% of South Koreans is lactose intolerant is mind boggling. I like watching South Korean street food prep occasionally and dairy seems to feature heavily. Is all that dairy lactose free?

These numbers can't possibly be right. Why is New Zealand, with a higher percentage of the population Maori and Asian (less likely to tolerate lactose) at 10% lactose intolerance vs 44% in Australia? And 81% of Czechs are lactose intolerant when all their neighbours are much lower?