FRIDAY, April 13 (HealthDay News) -- Many preschool children have a negative impression of overweight children, a Canadian study suggests.

FRIDAY, April 13 (HealthDay News) -- Obese workers have even higher health costs than smokers, a new study finds.

(HealthDay News) -- Food poisoning can do more harm to your family picnic than a family of red ants.

(HealthDay News) -- Wisdom teeth may not have to be extracted, unless they begin to cause problems.

FRIDAY, April 13 (HealthDay News) -- Single baby boomers generally have poorer health and less money than their married counterparts, a new study says.

FRIDAY, April 13 (HealthDay News) -- A moderate "red tide" is expected in New England this spring and summer that could force the closing of shellfish beds, according to experts.

FRIDAY, April 13 (HealthDay News) -- In a new study that used a special type of photography to unveil hidden signs of sun damage, middle schoolers showed evidence of levels of UV exposure that could raise their risk for melanoma later in life.

FRIDAY, April 13 (HealthDay News) -- Obese and overweight patients who undergo CT scans are exposed to much more radiation than people of normal weight, researchers say.

FRIDAY, April 13 (HealthDay News) -- Studies suggest that eating a diet that contains lots of fresh fruits and vegetables may reduce the risk of heart disease, high blood pressure and certain cancers.

FRIDAY, April 13 (HealthDay News) -- People are more likely to disapprove of and avoid substance abusers than those who smoke or are obese, according to a new study.

FRIDAY, April 13 (HealthDay News) -- The physical architecture of intelligence in the brain has been mapped by scientists who used brain injury patients to conduct their research.

FRIDAY, April 13 (HealthDay News) -- Receiving emotional support and acceptance from parents benefits the long-term health of lesbian, gay and bisexual adults, a new study shows.

FRIDAY, April 13 (HealthDay News) -- American women are less likely than men to get at least 30 minutes of exercise a day, a new study shows.

FRIDAY, April 13 (HealthDay News) -- Almost one in five parents has turned to an alternative or complementary medicine or treatment for their child's asthma, but new research has found that parents are not abandoning traditional treatments in the process.

FRIDAY, April 13 (HealthDay News) -- Adults with mental illness are more likely to have certain types of chronic physical health problems than those without mental illness, according to a U.S. government report released this week.

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

FRIDAY, April 13 (HealthDay News) -- The high blood pressure drug Toprol XL has been combined with a low-dose diuretic to form Dutoprol (metoprolol succinate extended release/hyrdrochlorothiazide), which has been approved by the U.S. Food and Drug Administration to treat high blood pressure.