Quote:
Originally Posted by Jonesy55
I think the correlation is more with lead in fuel, the 1950s and 60s saw a big increase in car use so people growing up in that era could have childhood brain development affected, then from the 80s onwards lead was replaced in fuels
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A lot of cars back then didn't have air conditioning either, which meant that people pretty much always had their windows down. More people smoked cigarettes then, too, which also likely would have meant they'd have their windows down inhaling car exhaust while smoking.