It's a lofty undertaking to go through about a billion cells to identify and pin down a handful of circulating cancer tumor cells. This seemingly impossible mission is now being achieved.

Stress can make people feel tired and depressed, but why? The body responds to emotional stress with inflammation just like it would with a physical injury.

A testing system commonly used to diagnose heart problems and other medical conditions has been recalled by the U.S. Food and Drug Administration.

When the temperature climbs into the triple digits outside, death rates can climb as well. Extreme heat waves can be especially dangerous for those with mental disorders.

Arab caravans call the weed "death carrot" because it kills camels if they eat it. While it may not be so good for camels, this toxic Mediterranean weed - Thapsia garganica - may prove to be a very useful anticancer therapy.

Doctors can't always tell whether treatments for cardiovascular disease will be effective for each patient. A high tech solution may provide the answer.

Methadone can be prescribed safely for cancer-level pain and heroin addiction. When abused, it’s responsible for more prescription painkiller overdose deaths than any other opioid.

What puts women at risk of pregnancy problems? Lots of factors, including illness, obesity and stress. A recent finding says that a type of antibody is also a risk factor.

Mild cognitive impairment (MCI) can progress into other forms of dementia, like Alzheimer’s disease. Science is trying to find ways to predict when MCI will get worse.

Lesbian, Gay, Bisexual, and Transgendered (LGBT) Americans are gaining more recognition and acceptance in the public eye. Yet many still have limited access to health care services.