In Canada, cannabis poisonings rose sharply among people 65 and older after the country legalized the drug, a new study found.

It’s one of the most common psychiatric disorders in adults. Yet there are no U.S. guidelines for diagnosing and treating patients beyond childhood.

Tens of millions of farm animals cross state lines every year, traveling in cramped, stressful conditions that can facilitate the spread of disease.

Many couples find it hard to open up about their intimate lives, but these tips can guide the way.

A review of a limited number of cases of unresponsive patients with severe traumatic brain injuries raised questions about a custom of making a decision within 72 hours.

The treatment is for patients with small cell lung cancer, which afflicts about 35,000 people in the U.S. a year.