Researchers from University College London found that even low exposure to air pollution across England, Scotland and Wales appears to impact the risk of age-related macular degeneration .
The team studied data from 115,954 people aged between 40-69, who had participated in the UK Biobank, a large study of half a million people focusing on the medical diagnoses and biological measurements of participants. Foster said that the main pollutants linked to macular degeneration were particulate matter PM2.5, nitrogen dioxide and oxide nitrogen.
Foster told CNN that the pollutants enter the body through the lungs, and seem to cause particular damage to the eyes because of high blood flow in the eye wall. Air pollution kills an estimated seven million people worldwide every year, according to the World Health Organization , which says such deaths occur largely as a result of increased mortality from stroke, heart disease, chronic obstructive pulmonary disease, lung cancer and acute respiratory infections.
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