(HealthDay News) -- People who overeat often do so because they're bored, rather than hungry.

(HealthDay News) -- When you need a quick bite and a fast food drive-through is the nearest culinary offering, you may not have to settle for junk food.

TUESDAY, Feb. 5 (HealthDay News) -- Older women who've had regular exposure to sunlight may be less likely to develop rheumatoid arthritis, new findings indicate.

TUESDAY, Feb. 5 (HealthDay News) -- The potential cancer risk that younger adults face from exposure to CT scans pales in comparison to the actual threat posed by health conditions driving the use of the imaging technology, a new study indicates.

TUESDAY, Feb. 5 (HealthDay News) -- Patients who take an active role in their health care have lower medical costs, according to a new study.

MONDAY, Feb. 4 (HealthDay News) -- Men who watch 20 hours of TV a week may have only half as many sperm as men who watch very little TV, a small study suggests.

TUESDAY, Feb 5 (HealthDay News) -- The drug Byetta, approved for adults with type 2 diabetes, appears to help severely obese teens lose some weight, a small study found.

TUESDAY, Feb. 5 (HealthDay News) -- For older women ages 66 to 74, getting a mammogram every two years appears as good as getting one every year, according to a new study.

TUESDAY, Feb. 5 (HealthDay News) -- A new report finds that cancer rates among blacks in the United States are on the decline, especially among black men, and the improvement may have saved almost 200,000 people from dying of the disease since the early 1990s.

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

TUESDAY, Feb. 5 (HealthDay News) -- The smoking rate for American adults with mental illness is 70 percent higher than for those without such problems, U.S. health officials reported Tuesday.