Le persone che vivono vicino a strade trafficate hanno un rischio maggiore di sviluppare demenza a causa dello smog. Gli inquinanti entrano nel flusso sanguigno e provocano infiammazioni.
Lo afferma uno studio pubblicato sulla rivista medica Lancet. I ricercatori del Public Health Ontario hanno analizzato 6,5 milioni di residenti fra i 20 e gli 85 anni, censendo oltre 243'000 casi fra il 2001 e il 2012. La possibilità di contrarre la patologia è più alta del 4% per chi abita tra i 50 e i 100 metri da un’arteria dove vi sono molti mezzi di trasporto. Lo studio non ha invece rilevato relazioni con il Parkinson e la sclerosi multilpla.
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