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opiate_lifer t1_irdqucs wrote

Reply to comment by ACorania in TIL A 2017 study found that the introduction of iodized salt in 1924 raised the IQ for the one-quarter of the population most deficient in iodine. by kstinfo

Leaded gasoline contaminated absolutely everything with lead, obviously worse the closer you were to constant car exhaust.

But it gets in the soil, comes down in rain, washes into rivers, etc etc

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zoicyte t1_iren3n0 wrote

you can trace the rise and drop of the crime rate with the rise and drop of lead in gasoline - there's about a 20 year offset but the graphs are perfectly matched up.

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UnblurredLines t1_irfpl9g wrote

Doesn't freakonomics make the claim that post Roe v Wade abortion increases also line up with the decrease in crime, albeit laggingly?

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zoicyte t1_irgfk8n wrote

I’ve never heard that, like ever. Also the leaded gasoline thing crosses borders.

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