TUESDAY, Aug. 3 (HealthDay News) -- College students who live in dormitories with dining halls gain more weight than students who have to walk farther for their meals, a new study has found.

(HealthDay News) -- The general rule is that most people don't need to be screened for colorectal cancer until the age of 50. But for some who meet certain criteria, earlier screening is recommended.

(HealthDay News) -- If your doctor prescribes bed rest during pregnancy, be sure to ask plenty of questions about what's safe for you to do.

TUESDAY, Aug. 3 (HealthDay News) -- Patients have no increased risk of death or complications from surgery when nurse anesthetists work without physician oversight, a new study has found.

TUESDAY, Aug. 3 (HealthDay News) -- Children and youth who don't have enough to eat are at increased risk of poor health, and repeated episodes of hunger may put them at risk for chronic diseases such as asthma, researchers say.

TUESDAY, August 3 (HealthDay News) -- Mentoring and relationship skills programs can improve the mental health of foster children, a new study from the University of Colorado suggests.

TUESDAY, Aug. 3 (HealthDay News) -- Signs of autism may show up in babies as young as 1 month old, a new study shows.

TUESDAY, Aug. 3 (HealthDay News) -- As Americans' average weight keeps rising, their quality of life is falling, according to new research.

TUESDAY, Aug. 3 (HealthDay News) -- Heart patients who need a new aortic valve are more likely to survive and have a better quality of life if a valve from their own pulmonary artery is used, instead of an aortic valve from a dead donor, new research has found.

TUESDAY, Aug. 3 (HealthDay News) -- Foreign-born doctors practicing in the United States who earned their medical degrees abroad performed as well or better than their U.S.-born counterparts, a new study finds.

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:

TUESDAY, Aug. 3 (HealthDay News) -- Men looking to attract the opposite sex may want to add red to their wardrobe, a new study finds.

TUESDAY, Aug. 3 (HealthDay News) -- People with hepatitis B infection have about twice the risk of developing non-Hodgkin lymphoma, finds a new study.

(HealthDay News) -- Here are the latest clinical trials, courtesy of ClinicalConnection.com:

TUESDAY, Aug. 3 (HealthDay News) -- Stroke patients who take vitamin B supplements to lower their homocysteine levels may not be protected from second strokes or heart attacks, a new study finds.

TUESDAY, Aug. 3 (HealthDay News) -- America's waistline continues to widen.

TUESDAY, Aug. 3 (HealthDay News) -- Having a therapist talk to kids who go to an emergency room with a violent injury and who also admit to previous alcohol use can reduce repeat episodes, new research finds.