There is weak evidence that negative air ionization via air filters is associated with lower depression scores, particularly at the highest exposure level.
There is weak evidence that negative air ionization via air filters is associated with lower depression scores, particularly at the highest exposure level.
www.ncbi.nlm.nih.gov
NCBI - WWW Error Blocked Diagnostic
I couldn't understand the paper more, but it looks like it increases serotonin in our brains?