Experts have long known that "low-tar" and "light" cigarettes aren't any healthier than regular cigarettes, and new research suggests they have another drawback: People who switch to them are less likely to quit, even those who switch specifically...

A simple questionnaire can identify patients at high risk for lung cancer, researchers say. In a study that began in 2001 with 1,000 people in Colorado who were seeing their primary care physician for general health issues...

New guidelines are needed to improve the diets of U.S. school children, finds a new government report that would set maximum calorie counts for school breakfasts and lunches.

A drug similar to one now used to treat blood poisoning holds promise as a treatment for amyotrophic lateral sclerosis, better known as ALS or Lou Gehrig's disease, researchers say.

While research has suggested that the prevalence of autism spectrum disorders in American children was about 1 of every 150 children, a new government study estimates that the prevalence is more likely about 1 in every 91 children.