Sleep helps the brain to cleanse itself—and now this process can be measured in humans entirely noninvasively. Researchers at ...

All of this motion has subtle but dramatic effects on the sleeping brain that the researchers are only beginning to ...

This molecule helps keep our blood vessels dilated, which can have a harmful ripple effect throughout our body if disrupted.

Dementia has long been framed as a slow, irreversible loss of neurons, but a new line of research is shifting attention to the blood vessels that feed the brain. Scientists are now testing whether ...

Poor blood flow affects millions of adults and often worsens the older we get. Circulation problems may lead to discomfort in the hands and feet due to numbness and tingling muscle cramps and even ...

A blood clot is a potential complication after surgery. To help prevent blood clots, a doctor may advise doing exercises to promote blood flow, wearing compression garments, and taking blood-thinning ...