Lower amount of vitamin E concentrations in the blood is linked to higher exposure to fine particulate matter in the general population, the findings showed.
"These new findings are consistent with previous reports which observed lower levels of vitamin E in people with lung conditions such as asthma," said study co-author Frank Kelly from King's College London.
Vitamin E in human diets is most often provided by dietary oils, such as olive oil. But many of the highest levels are in foods not routinely considered dietary staples - almonds, sunflower seeds or avocados.
The new study looked at the association between lung function and a set of metabolites - chemical signatures circulating in the blood - and between these metabolites and exposure to PM10 and PM2.5 (particles smaller than 10 and 2.5 microns, respectively).
The study involved over 5,500 volunteers from Britain.
The researchers found that individuals with a higher exposure to PM2.5 had significantly lower levels of vitamin E and also had lower lung function.
The study was published in the American Journal of Respiratory and Critical Care Medicine.
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