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Thanksgiving marks the beginning of a season where eating is central to the festivities. While it's also the season of indulgence, it's easy to plan a holiday meal that's delicious and healthful. Whether you're serving two or 20, these guidelines will help make sure your big dinner is a success. Follow our tips for making smart choices at the market, in the kitchen, and at the table.

Medical experts hailed a "milestone in medicine" Wednesday as they announced the successful transplant of a human windpipe engineered with the patient's own stem cells.

The popular herb ginkgo biloba does not reduce the risk of dementia or Alzheimer's disease, according to a study of more than 1,500 elderly patients who took the supplement. Often touted as a way to preserve aging memories, no large-scale, randomized clinical trial -- until now -- has thoroughly evaluated the safety and effectiveness of ginkgo biloba extract as a way to prevent dementia.

Regular physical activity may lower a woman's overall risk of cancer, suggests a new government study -- but only if her workouts don't cut into a good night's sleep. Otherwise, lack of shut-eye appears to cancel out much of exercise's protective benefits.

Oral surgeon Dr. Gary Bouloux is about to pull a diseased wisdom tooth from his patient's mouth, using forceps that look like a pair of silver pliers.

Famed for keeping people slim, healthy and living longer, the Mediterranean diet has followers all over the world.

Being in space is like being Superman every day, says Clay Anderson, a NASA astronaut from Omaha, Nebraska. But floating around in zero-G can have some serious consequences for the human body, NASA's experts have learned.

Nearly half the respondents in a survey of U.S. primary care physicians said that they would seriously consider getting out of the medical business within the next three years if they had an alternative.

A new study from the Centers for Disease Control and Prevention has found that infants born as a result of assisted reproductive technology, or ART -- such as in vitro fertilization and the use of donor eggs -- are two to four times more likely to be born with certain types of birth defects than infants conceived naturally. But, the study's lead author says, the overall risk is still relatively low.

The "pregnant man" who gave birth to a daughter earlier this year says he is expecting a second child.

An extensive federal report released Monday concludes that roughly one in four of the 697,000 U.S. veterans of the 1990-91 Gulf War suffer from Gulf War illness.

Smoking habits are usually established during the teen years. The CDC estimates that 20 percent of high school students smoked cigarettes last year. While researchers have a good idea how to help adults kick the habit, little information is available on what to do to assist teenage smokers.

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The number of people worldwide without access to a toilet -- no public restroom, no outhouse, no latrine, no smallest room -- is a staggering 2.6 billion. That's four out of ten people.

Feeling razor-sharp -- ready to solve all the world's problems? Or perhaps today your attention wandered aimlessly and resisted all attempts to bring it into focus. Here's a look at the biology behind concentration, and what you can do to improve it.

Peppermint oil, soluble fiber, and antispasmodic drugs can indeed help people with irritable bowel syndrome, according to an analysis of 25 years of research on the condition, which is characterized by bouts of diarrhea and constipation.

Everyone knows that being overweight increases your risk of heart disease, diabetes, and some types of cancer, but new research reveals that even normal-weight people aren't scot-free. A European study suggests that people with belly fat -- even if they're at a healthy weight -- have a higher risk of dying during a 10-year period than their same-weight peers without a spare tire. The report was published Wednesday in the New England Journal of Medicine.

Thomas Cuddy enlisted in the U.S. Army 28 years ago, but he's facing his greatest battle now that he's out.

The Food and Drug Administration has begun blocking the import of milk products from China in an effort to ensure that products contaminated with melamine do not enter the U.S. market.

Each time the state of Alaska raised its alcoholic beverage tax, fewer deaths were caused by or related to alcohol, according to a newly released study. Does that mean all states should consider raising taxes on alcohol -- to both protect us from ourselves and raise much needed funds?