Body altered by PM2.5, study finds

Stress hormones appear to increase; changes seen in blood components

Chinese scientists have discovered that exposure to PM2.5 could significantly increase stress hormones in humans, as well as cause metabolic changes in blood glucose, amino acids and lipids.

The team, led by Kan Haidong, a professor at Fudan University's School of Public Health, shed light on the prevention and treatment of diseases caused by PM2.5 - fine particles 2.5 microns or less in diameter that can go deep into the lungs and cause health problems, even deadly ones.