When you hold your breath underwater, you might pass out before you realize you need oxygen right now. Experienced swimmers have drowned as a result, and most people aren't aware of the risk.
Sometimes Greg O'Brien gets a tingling in the back of his brain that tells him a hallucination is coming. Lions. Spiders. Birds. Sometimes the creatures are friendly. Too often, they're not.
People in the LGBT community often have a hard time getting appropriate health care. But the problems aren't unique to them. Doesn't everyone want to have a doctor call them by their preferred name?
An effort to get doctors to improve their communication skills didn't reduce the number of new mothers hesitant about vaccines. But researchers say this is just a first try at a worthy concept.
A decade ago, scientists showed that the anesthetic ketamine could relieve major depression in hours. Now, two chemical cousins of the drug are entering the late stages of clinical testing.
The problem has gotten so bad that some doctors are pondering a "post-antibiotic world." The World Health Organization says countries need to boost surveillance for resistance and develop new drugs.
Drug overdoses now kill more Americans than traffic accidents and New Hampshire, the first in the nation primary state, is suffering from a heroin epidemic. The candidates are hearing about it.