cold

A bulky coat underneath a car seat harness can pose dangers for children. When the Florida sun takes a winter holiday, here are some tips for optimal car safety.

One common decongestant, phenylephrine, was found ineffective this fall. Doctors are skeptical about the rest of the over-the-counter cold cures lineup.

Knowing how to differentiate between symptoms of each can be important, especially if you're at high risk for flu's complications. Influenza can lead to pneumonia, hospitalization and even death.

An analysis finds that if you're deficient in vitamin D, taking a supplement might cut your risk of respiratory infections. But there's disagreement on what's considered deficient.