SAN DIEGO — Mice yanked out of their community and held in solitary isolation show signs of brain damage. After a month of being alone, the mice had smaller nerve cells in certain parts of the brain.

To stay healthy, many of us know to eschew cigarettes, moderate alcohol intake, follow a sensible diet, and exercise regularly. But soon, your doctor might also ask: “How many people do you see in a ...

Over the past few months, the phrase “social distancing” has entered our lexicon. Many of us have found ourselves separated from family and friends—or at least from our normal social lives. As humans ...

Dr. Rochelle Walensky, director of the Centers for Disease Control and Prevention, on Wednesday defended the agency's new isolation guidance for people who test positive for Covid-19. Subscribe to ...