A sentinel lymph node biopsy removes the lymph node closest to a tumor. The goal is to see if cancer has spread to the lymph nodes that filter out foreign particles from the body. This is a common procedure during breast cancer and melanoma surgeries.

For all the modern marvels of medical science, humans still must contend with allergies, which interrupt work, play and everyday living.

While studies have shown that erectile dysfunction can be a sign of cardiovascular disease in older men, young or middle-aged men with ED may be headed toward heart problems as well.

Following a stroke, it isn't uncommon for patients to be overwhelmed by a loss of function or the need for new medications. Those that skip drug doses or take the wrong medication are more likely to be rehospitalized.

There may be more to home field advantage than just familiar surroundings and local fans. Crossing a few time zones more than doubled some athletes’ sick days.

People tend to lie far more than they realize, even about relatively insignificant things, according to psychological research. But these lies may contribute to poorer overall health.

A day at the county fair is one of the hallmarks of summer in America. But you might want to skip the pig races this year: new swine flu cases have been linked to pigs at agricultural fairs.

For those with limited mobility in their legs and arms, communicating through the written word or creative expression through drawing is an impossible task. A new technology developed by a French researcher is changing this.

Being diagnosed with any advanced cancer is not happy news. So becoming depressed might be a natural response, but it's not a life-prolonging one.