Vitamin D May Not Prevent Breast Cancer Vitamin D supplements, taken at a dose of 400 international units per day, may not help prevent breast cancer in women after menopause, a new study shows.

Daschle Is Obama's Pick to Lead HHS By selecting former Senator Tom Daschle (D-SD) to head the Department of Health and Human Services, President-Elect Barack Obama has found a point person for sweeping health-care reform who also shares his bipartisan — read realistic — approach to politics. Fall Babies at Higher Risk for Asthma A new study shows that babies born four months before the peak of winter virus season are more likely to develop childhood asthma than babies born at any other time of year. Uncertainty Is Powerful Stress Producer In a newly published study, uncertainty was found to be far more stressful for highly neurotic people than dealing with a clearly negative outcome. Water Aerobics Reduces Pain in Childbirth Water aerobics may help reduce the pain of childbirth. A new study shows that women who take classes during pregnancy are significantly less likely to ask for pain medication during delivery. Hib Vaccine Shortage Extended The current U.S. shortage of childhood Hib vaccine, cut off in December 2007, will continue at least until mid-2009, the CDC warns. Happy People Get the Big Picture If you're in a bad mood, all you see is the task at hand. But in a good mood, you can see how the task fits into the grand scheme of things in your life. Got a Complex Task? Study, Sleep on It After learning complex skills, people perform those skills better after a night's sleep, a study using video games shows. ADHD Drugs Don't Cause Genetic Damage Ritalin, Adderall, and Concerta do not appear to cause genetic damage in children who take them for attention deficit hyperactivity disorder (ADHD), a new government-funded study concludes. Genetic Screening May ID Diabetes Risk Genetic screening can help identify people at risk for type 2 diabetes, but it adds little to traditional methods for determining risk, two new studies show. Exercise: The Brain’s Fountain of Youth Daily physical exercise begun no later than middle age fights age-related brain decline, mouse studies suggest. 1st Trachea Transplant From Stem Cells Doctors in Europe have performed the first trachea transplant that hinges on the patient's own stem cells. Root Canal or Dental Implant? Root canals and dental implants are equally successful, but implants may need more follow-up maintenance, a new study shows. FDA Panel: Toughen Dermal Filler Warnings Dermal fillers injected to soften facial wrinkles should carry stronger and more specific warning labels about potential adverse effects, according to an FDA advisory panel. Cancer Drug Avastin Raises Blood Clot Risk The life-extending cancer drug Avastin raises the risk of dangerous blood clots by 33%, an analysis of clinical-trial data shows. Ginkgo Biloba Doesn’t Prevent Dementia The largest and longest study ever to examine the use of ginkgo biloba for the prevention of Alzheimer’s and other dementias showed no evidence of effectiveness. Broccoli May Help Smokers' Lungs Smokers and former smokers who eat lots of broccoli and other cruciferous vegetables may be less likely than other smokers to develop lung cancer, new research shows. Canola Oil May Affect Breast Cancer Risk Early research shows the type of oil a woman consumes during pregnancy could influence her daughter's breast cancer risk years later. Lean Cuisine Chicken Meals Recalled Nestle Prepared Foods Company is recalling 879,565 pounds of frozen Lean Cuisine chicken meals that may contain small pieces of hard blue plastic. Indigo Ointment Relieves Psoriasis A study shows 74% of patients had clearance or near clearance of psoriasis after 12 weeks' treatment with indigo naturalis ointment, a Chinese herbal remedy. Activity, Sleep May Cut Cancer Risk Physical activity may cut cancer risk, and sleeping at least 7 hours per night may maximize that benefit, new research shows. Healthiest U.S. City: Lincoln, Nebraska The healthiest U.S. city is Lincoln, Neb. Huntington, W.V., is the least healthy city, the CDC's 2007 city-by-city data reveal. CDC: IVF May Boost Birth Defects Risk The CDC reports that certain birth defects -- including heart valve problems and cleft lip/palate -- may be two to four times more common among babies conceived with assisted reproductive technology than babies conceived naturally. Family History Raises Breast Cancer Risk Women with a strong family history of breast cancer who do not have genes associated with increased risk of the disease have a fourfold greater chance of developing it than the average woman, new research indicates. Vitamin C, E Pills Fail to Prevent Cancer Taking vitamin E and vitamin C supplements may not make cancer less likely, a new study shows. Keeping the Heat on Health Care Reform Some members of Congress are pushing for quick action on health care reform when President-elect Barack Obama takes office next January. Craving Chocolate? Take a Walk Instead A new study shows that taking a brisk walk can cut down the urge to eat chocolate -- and may help curb cravings that can derail weight loss efforts. Celiac Disease: Faster Gluten Test Scientists have developed a new test that could speed up identification of gluten, a trigger for people with celiac disease. Peppermint Oil, Fiber Can Treat IBS Largely overlooked, older remedies like peppermint oil and fiber are effective treatments for irritable bowel syndrome (IBS), a review of the research shows. Saturated Fats, Intestinal Cancer Linked If you eat a lot of saturated fat, you may be more at risk for cancer of the small intestine, according to a new study. Smoking Rate Is Declining in U.S. The percentage of Americans who smoke cigarettes has fallen below 20% for the first time since at least the mid-1960s, according to a new report. HPV Vaccine Gardasil May Help Boys, Men Gardasil, a vaccine against four strains of human papillomavirus (HPV), may help prevent genital warts in boys and men, a new study shows. Joyful Music Helps the Heart Listening to joyful music increases your blood flow by 26% -- as much as aerobic exercise, according to an American Heart Association report. Hypoallergenic Dogs and Dog Allergies: FAQ An allergy and asthma doctor weighs in on the Obamas' search for a dog that won't trigger Malia Obama's dog allergies. Belly Fat Doubles Death Risk Belly fat has been linked to an increased risk for heart disease and diabetes. Now an important new study links belly fat to early death. New OCD Treatment Helpful but Risky Electrodes implanted deep in the brain reduce severe obsessive-compulsive disorder symptoms -- but it's a risky procedure, a French study shows. FDA: No Heart Rhythm Risk From Bone Drugs The FDA today said it sees no proof that the bone drugs called bisphosphonates are linked to a heart rhythm problem called atrial fibrillation. Hormone Creams Ease Menopause Symptoms 'Natural' hormone creams can help relieve hot flashes, night sweats, depression, and other symptoms of menopause, a new study suggests. 8 Top Educational Kids' TV Shows Listed A new report from the nonprofit group Children Now takes a dim view of most "educational/informational" TV programs for kids -- but it singles out eight programs that stand out from the pack. U.S. Gets 'D' for Premature Birth Rate The U.S. gets a "D" for its premature birth rate, according to the March of Dimes. Obese Kids Have Middle-Aged Arteries The neck arteries of obese children and teens may have as much plaque buildup as 40-somethings, a study shows. Fat Cravings May Start in Womb Eating a high-fat diet during pregnancy may foster fat cravings that start in the womb and last into adulthood, according to researchers from The Rockefeller University. Allergy Shots to Lymph Nodes May Work Better Allergy shots given directly to the lymph nodes may bring quicker allergy relief than traditional allergy shots, new research shows. Vitamin D May Not Prevent Breast Cancer Vitamin D supplements, taken at a dose of 400 international units per day, may not help prevent breast cancer in women after menopause, a new study shows. Low Heart Disease Risk? Test May Show Otherwise Some people who think they're at low risk for heart disease might be surprised about what a neck ultrasound could tell them about their hearts, new research shows. Black Cohosh: Mixed Cancer Findings Black cohosh, a supplement taken to ease menopausal symptoms, may have a mixed relationship with breast cancer, according to a study published in Cancer Research. Crestor FAQ: New Benefits for Statins Questions and answers about a study that shows the cholesterol-lowering drug Crestor may cut heart risk even when cholesterol levels are already low. Hibiscus Tea May Cut Blood Pressure A study shows that drinking three cups a day of hibiscus tea can help lower high blood pressure. mp3 Headphones and Pacemakers Don't Mix A study shows the magnets in the headphones of mp3 players may interfere with heart pacemakers or ICDs. Vitamins C and E Don't Cut Heart Risks An eight-year study involving nearly 15,000 male physicians failed to show a benefit for vitamin C and E in preventing heart attacks or strokes. Statin Benefits Patients With Low LDL Cholesterol People with normal cholesterol, may benefit from treatment with cholesterol-lowering drugs called statins, new research shows.