See What HealthDay Can Do For You
Contact Us

City Air: Something to Sneeze At

What happens to the pollution you inhale

(HealthDayNews) -- If you live in a city, chances are you inhale 17,000 pints of air -- containing about 20 billion foreign particles, including dirt, dust and chemicals.

Most larger particles are trapped in your stiff nostril hairs, according to "The Incredible Machine." Smaller particles can make it deep into your throat and bronchial tubes, where they are caught in the lining of sticky mucus and are forced up by an escalator of upward-sweeping hairs called cilia.

Particularly offensive particles are coughed or sneezed out. Most, however, are raised just high enough to be swallowed and ultimately removed with other waste through the digestive tract.

So now you know why you should cover your nose and mouth when you sneeze or cough.

Consumer News


HealthDay is the world’s largest syndicator of health news and content, and providers of custom health/medical content.

Consumer Health News

A health news feed, reviewing the latest and most topical health stories.

Professional News

A news feed for Health Care Professionals (HCPs), reviewing latest medical research and approvals.