IQ scores have to do with a lot of things. IQ can lower due to: - not meeting basic nutrition requirements during gestation and early life - not consuming eno

IQ scores have to do with a lot of things. IQ can lower due to: - not meeting basic nutrition requirements during gestation and early life - not consuming enough iodine. iodine gets added to salt to ensure people consume it. - exposure to lead and other toxic substances. ...and mental stimuli. Some people (notably alt-right Twitter accounts), promote that idea that certain races have significantly lower IQ, spreading maps of average IQ per country. It is my duty to call out that as wrong. Having the aforementioned factors in consideration quickly refutes that idea. Some people point out that there are genetic markers associated with higher IQ. To be honest, we haven't listed all of them yet. So I would stay quiet before pointing out that certain population doesn't have certain SNP.