Compared to women who slept seven hours a night, women who only slept five had a difference in bone density equivalent to one year of aging.

A simple blood test could offer a way to monitor very early signs of melanoma of the eye, researchers say.

Age may be an asset for people with type 2 diabetes. A new study shows younger patients feel more stressed about the diagnosis, leading to worse health.

Transplanting neurons into the brains of mice after a traumatic brain injury reduced memory loss and prevented them from developing epilepsy.

A new system uses a smartphone to detect toxin-producing algae in water within 15 minutes.

Electronic health records take doctors' time away from patients—and contribute to higher rates of professional burnout, a new study shows.

Eating a diet that includes more plants and less meat when you're middle aged may delay or prevent cognitive impairment when you get older.

Our immune systems can fight off a huge range of viral invaders, but HIV can avoid a protein that specializes in hunting viruses. New research explains how.

Feeling sick is actually an emotion called "lassitude," research finds. It's likely one more way that our bodies work to help us get better.

More Americans say they're striving to lose weight, but the average body mass index has gone up.