FRIDAY. Feb. 5 (HealthDay News) -- Your birthday may affect your odds of becoming a professional athlete, a new study suggests.

FRIDAY, Feb. 5 (HealthDay News) -- The makeup of your brain may influence your social standing, a new study suggests.

FRIDAY, Feb. 5 (HealthDay News) -- Pacemakers made for humans are giving older dogs a new leash on life.

FRIDAY, Feb. 5 (HealthDay News) -- In the latest blow to the controversial multiple sclerosis drug Tysabri, the U.S. Food and Drug Administration on Friday announced that it was slapping a new warning on the drug's label.

FRIDAY, Feb. 5 (HealthDay News) -- Efforts to improve treatment of concussions in youth sports are making headway on several fronts: Washington state's new laws governing head injuries in scholastic sports will get big play Sunday at Super Bowl XLIV, and Texas researchers report that an online test can help athletic trainers and doctors determine when it's safe for an athlete to return to the field after a concussion.

FRIDAY, Feb. 5 (HealthDay News) -- Maggots used to treat chronic wounds can be killed by a type of bacteria that infects the wounds, Danish researchers say.

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

FRIDAY, Feb. 5 (HealthDay News) -- Scientists have completed a map of areas of the human genome that control which genes are switched on or off in type 2 diabetes, a finding that may advance understanding of the genetic basis of this and other common diseases.

FRIDAY, Feb. 5 (HealthDay News) -- Minimally invasive laparoscopic surgery benefits patients but can cause work-related injuries in surgeons, suggests a new survey.

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

FRIDAY, Feb. 5 (HealthDay News) -- When the New Orleans Saints and the Indianapolis Colts take the field for Super Bowl XLIV on Sunday, emotions will be running high, so high that some fans can run the risk of a heart attack and even death.

FRIDAY, Feb. 5 (HealthDay News) -- Many asthma patients who use herbal remedies experience increased symptoms and poorer quality of life, a new study shows.

FRIDAY, Feb. 5 (HealthDay News) -- Teens whose mothers were depressed during pregnancy are at increased risk for antisocial behavior, including violence, a new study suggests.

FRIDAY, Feb. 5 (HealthDay News) -- After nearly a year of headlines, worry and confusion, the H1N1 swine flu virus is now out of the news. Is it out of circulation as well?

(HealthDay News) -- A cardiac rehabilitation program is designed to help people recover from a heart attack, heart surgery or another medical procedure involving the cardiovascular system.

(HealthDay News) -- An ear tube is surgically implanted in a child's ear to help drain fluid that builds up behind the eardrum, says the U.S. National Library of Medicine.

FRIDAY, Feb. 5 (HealthDay News) -- There's a link between a birth defect called gastroschisis and the agricultural chemical atrazine, a new study has found.

FRIDAY, Feb. 5 (HealthDay News) -- It's not cost-effective to screen couples genetically to determine if they're at risk of having children with spinal muscular atrophy (SMA), says a U.S. study.