Is there evidence that native Los Angelenos like me are more demented? Could be ... but it doesn't seem to come up much. Logically, should see bad health effects due to horrid LA smog from 1943-c.1993, but I haven't seen studies. Health nuts flocked to LA even in smog years.
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Replying to @Steve_Sailer
It's not necessarily correlated with visible smog pollution. Also if higher IQ people live there they tend to show less dementia so you could have an effect even with lower dementia within LA
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Replying to @bswud
During L.A.'s smog years, smog was much worse inland due to prevailing ocean breeze, so dementia ought to be least common among retired professors of UCLA worse at USC, even worse at Caltech, worst at Claremont. Anybody study this?
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Replying to @Steve_Sailer
The protective effect of high IQ could be far larger than the negative effect of pollution. But yes, they plot state PM2.5 pollution & state dementia and even given all the other factors there's a raw correlationpic.twitter.com/xnj7HmM5AY
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Replying to @bswud
Smog (largely from auto exhaust) was radically worse in Los Angeles than in the rest of the country from WWII to late 20th Century, perhaps an order of magnitude worse. Ill health effects from smog in LA County (pop 10 million) should leap out at researchers. But they don't...
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Replying to @Steve_Sailer
The important thing here (which I've just realised) is the type of pollution they're studying (PM2.5s) isn't actually visible and doesn't make up smog, I believe it needs to be PM10+ to make up smog. Smog doesn't necessarily correlate highly with the sort of pollution they study
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Replying to @bswud
So Los Angeles, through dumb luck, dodged a bullet by having most of its air pollution come from auto exhaust, which was highly annoying (cough, wheeze), but not all that bad for you in the long run? That could be ...
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Replying to @Steve_Sailer @bswud
Los Angeles didn't have too much heavy industry. The local steel plant was built far inland in Fontana during WWII to be out of range of the guns of Japanese battleships. Air pollution was horrific in Fontana. I knew a guy on Fontana HS cross-country team; they trained at night.
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Replying to @Steve_Sailer @bswud
Yikes that is grim. Hear similar things from friends in China who only exercise in indoor, air filtered gyms
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Fortunately, most people in Southern California lived upwind from the far inland Fontana steel mill. Ironically, pollution control benefited real estate values of Chinese the most because in 1970s they started moving to inland San Gabriel Valley because they didn't mind smog.
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Today, beautiful old-time San Gabriel Valley suburbs of L.A. like Pasadena, San Marino, and Arcadia are smog free and heavily Chinese because they started buying in during the cheap smog years because they didn't care about going outside.
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Replying to @Steve_Sailer @bswud
That's fascinating. I've only had a couple of quick trips to LA so it's new territory for me - next time I will grab a history book and do a proper tour
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