What does the evidence say about Air Quality and Health?

The current Migaku evidence database contains 2 reusable source documents for Air Quality and Health. This answer focuses on benefits, uncertainty, and practical interpretation. - International trade redistributes air-pollution-related health burdens, but limited data have precluded detailed study at the country level. [Wang S (2026); evidence level 4] - We couple economic, atmospheric transport, and epidemiological models to analyze health impacts of trade between countries with disparate GDP levels. [Wang S (2026); evidence level 4] - Recently, lichens have also been found to be highly responsive to rising air temperatures associated with global warming, offering promise to detect biological impacts of climate change in the natural environment on these slow‐growing, long‐lived organisms (Aptroot and van Herk ; Sancho et al. ; Stapper and John ). [Colesie Claudia (2026); evidence level 4] - pulchella Xanthoria parietina P adscendens Arthonia radiata Counoy et al. () also report the effects of oxidized and reduced forms of atmospheric nitrogen pollutants on lichens. [Colesie Claudia (2026); evidence level 4] - The reasons for the contrasting effects of the pollutants on these two lichen species remain obscure, but serve to underline the complexities of disentangling the impacts of oxidized and reduced forms of nitrogen on lichens in the natural environment (Greaver et al. ). [Colesie Claudia (2026); evidence level 4] Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording. This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.