Quote:
Originally Posted by Big Dave
Strange you mention asthma. After 1980, SO2 ambient concentrations declined but asthma cases have increased by the same margin. Maybe a whiff of SO2 has a therapeutic effect.
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What is your source? Perhaps the overall average of rural locations U.S. vs. places like urban L.A. show a decrease.
I rarely ever use this in this forum, but my job is to study trends in disease and the effect of pharmaceutical drugs to be either accepted or rejected by the FDA for that disease/condition. My foundation in this career was to study Asthma across 14 studies and validate data (from Pediatric cases to the Elderly). I saw real patient diaries of symptoms from places like rural Nebraska to Los Angeles.
Cross-referencing confidential data with published effects of PM/SO2/NOx, a clear trend shows that dense, urban areas suffer with the old Diesel tech (including ex-US locales like London). I mean this in the utmost of respect -- consider multiple studies, their Scientific weight, and form your own educated opinion.
RH77