The symptoms often start slowly. But they get worse without treatment. Here are four signs it's time to see your doctor.

People with mental health conditions are more likely to get severe COVID-19. They're also more likely to catch the disease even after vaccination.

You can't control every risk factor—but you can still take steps to prevent a stroke. Here are eight risk factors you can do something about.

Air pollution affects everyone. And it can cause damage fast. Learn how bad air days can harm your health—and how to protect yourself.

If you're considering an over-the-counter melatonin supplement to help you sleep, read this first.