Figure 3.

Outcome of telomere length. (A) Based on the number of articles. 20 of 25 studies found association between shorter telomere with air pollution, with 3 longer and 1 mixed result. Remaining one study did not demonstrate significant association between LTL and short-term exposure to PM or other gaseous pollutants in type 2 diabetes patients. (B) Based on the number of participants. 94.8% of population in these studies demonstrated the association between air pollution with shorter telomere length. LTL, leukocyte telomere length; PM, particulate matter.