If you absolutely, positively have to have a medical emergency, try to schedule it during the week, please. A new study shows it could be a matter of life and death.

For years, vitamin C has been the supplement of choice for battling the common cold. Now new research suggests another vitamin may be far more effective at warding off the season’s sniffles and sneezes.

High carb, low fat, low carb, high protein–for years dieters and diet books have debated the relative benefits of different weight loss regimens. A new study published in The New England Journal of Medicine settles the argument decisively.

Getting just the right dose of the blood-thinning drug warfarin is tricky. The appropriate amount can very as much as 10-fold among different people, and taking too little or too much is dangerous. In a demonstration of the power of personalized medicine, new evidence shows that genetic testing can help doctors prescribe the drug more accurately.

What’s that you say? Antioxidant vitamins may protect against what?

Do dreams reveal hidden truths or provide glimpses into the future? A surprisingly large percentage of people from cultures around the world say the answer is yes.

Fructose-sweetened beverages appear to raise the level of fat particles in the blood called triglycerides, a well-documented risk factor for heart disease. That’s worrisome, because fructose consumption is also on the rise, surveys show.

A good night’s sleep has been shown to strengthen and even restore memories. University of Pennsylvania scientists reported this week that they’ve actually seen the process happening in the slumbering brain.

Not for the first time, researchers say they’re hot on the trail of a cure for the common cold. This time, they may be right.

Too much television viewing during adolescence can lead to depression, according to a study published in the February issue of The Archives of General Psychiatry.