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A comment on Depression and suicide linked to air pollution in new global study. Parent comment

Re:Depression and suicide linked to air pollution in new glo... by coldtea on Thursday December 19, 2019 @05:27AM (#21833594)
On the other hand, measuring lower PM is indeed a quantifiable metric.
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Re:Depression and suicide linked to air pollution in new glo... by mc3 on Thursday December 19, 2019 @04:16PM (#21839407)
Yeah it depends what question you are trying to answer:

1. Does my air purifier filter out PM2.5?

or

2. Dos lower PM2.5 make me sleep better?

For #1 there is no placebo effect (there is no human element!)

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