PM2.5 may cause hair loss, experts warn

PM2.5 particles measuring less than 2.5 micrometres can enter the bloodstream and affect multiple organs, not just the lungs.

Long-term exposure to PM2.5 and PM10 is linked to alopecia areata, an autoimmune condition causing patchy hair loss.

Approximately 44% of Indian cities face chronic year-round air pollution; no monitored city meets WHO daily PM2.5 safety guidelines.

Dr Sameer Bansal of Apollo Hospitals, Bengaluru warns that PM2.5 bypasses natural defenses, causing airway irritation and systemic inflammation.