The Respiratory System

Some ozone is good and protects us from the sun, but ground-level ozone is bad for our health.

While this sounds like an urban myth, it is true.

The HPV strains found in people with lung cancer include the strains that cause cervical cancer and genital warts.

Time spent in traffic accounted for the most heart attacks, the study said.

The symptoms of a cold, allergies and sinusitis can be similar. Here are some ways to tell the difference between these conditions, according to the American Academy of Otolaryngology.

People can live with one lung, just like they can live without a number of organs.

One week living with a hacking cough seems like forever, but experts say you'll likely have to wait even longer for it to clear up.

Amoxicillin is no better than a placebo at treating the symptoms of a lower respiratory-tract infection.

The disease, a cousin of the SARS virus, may have come from Japanese house bats.

People who have traveled to Qatar or Saudi Arabia and who have a respiratory infection that cannot be explained by common causes should be tested for a new, SARS-like virus.