Not only does exercise make most people feel better and perform physical tasks better, it now appears that exercise – specifically, resistance training -- actually rejuvenates muscle tissue in healthy senior citizens.

With the growing number of smoking bans in restaurants and bars driving smokers outside, researchers in Athens, Georgia, are hoping to find out whether secondhand smoke from smokers clustered outside these establishments is posing a health hazard of its own.

Scientists have long assumed that fungi exist mainly to decompose matter into chemicals that other organisms can then use. But researchers at the Albert Einstein College of Medicine of Yeshiva University have found evidence that fungi possess a previously undiscovered talent with profound implications: the ability to use radioactivity as an energy source for making food and spurring their growth.

COLUMBUS, Ohio – Imagine if a naturally occurring chemical in your body could help make you feel more calm and relaxed – but it would only work during the long days of summer.

ST. PAUL, Minn -- Cancerous brain tumors appear to respond favorably to the drug temozolomide when used as primary chemotherapy after surgery, and the treatment appears to work best in people missing a certain gene, according to a study published in the May 22, 2007, issue of Neurology®, the scientific journal of the American Academy of Neurology.

As the nation ages, an estimated 44 million Americans, including at least half of those ages 50 and older, are at risk for osteoporosis, making their bones fragile and vulnerable to serious fractures.