Search our huge database of 20,000 Health Topics! Blood/Lymphatic System Bones, Joints and Muscles Brain and Nervous System Cancers Child and Teen Health Complementary and Alternative Therapies Diagnostic Tests Digestive System Drug Therapy Ear, Nose, and Throat Endocrine System (Hormones) Eyes and Vision Fitness and Exercise Food and Nutrition Genetics/Birth Defects Health System Heart and Circulation Immune System/AIDS Infections Injuries and Wounds Kidneys and Urinary System Lungs and Breathing Men's Health Mental Health and Behavior Metabolic Problems Mouth and Teeth Poisoning, Toxicology, Environmental Health Population Groups Pregnancy and Reproduction Safety Seniors' Health Sexual Health Skin, Hair and Nails Social/Family Issues Substance Abuse Problems Surgery and Rehabilitation Symptoms Transplantation and Donation Wellness and Lifestyle Women's Health   Recommended Resources: Yahoo! Health News Yahoo! Health News Chicken producers debate 'natural' label A disagreement among poultry producers about whether chicken injected with salt, water and other ingredients can be promoted as "natural" has prompted federal officials to consider changing labeling guidelines. Little harm seen from painkiller shots for pro athletes When professional athletes in sports like football and rugby are injured, they commonly get injections of pain-numbing anesthetics to help them stay in the game. Now a new study suggests that, while safety concerns remain, most athletes may not su... Editor changes industry-backed tanning pill study A journal editor has scrubbed a line supporting the use of a L'Oreal-Nestle tanning pill from the conclusion of a company-sponsored study. Doctors: Transplant advance in windpipe cancer Doctors have successfully transplanted windpipes into two cancer patients in an innovative procedure that uses stem cells to allow a donated trachea to regenerate tissue and create an organ biologically close to the original, they said Friday. For blood pressure, can you be fit but fat? If you're trying to bring your blood pressure to healthy levels, a new study suggests that how much you weigh is more important than how fit you are. What prevents falls after strokes? Study: Not much While most stroke survivors will suffer falls, strategies to prevent these dangerous events continue to fall short, suggests a new study out of Australia. Eastern Africa polio-free, but cases found in Russia Eastern Africa is free of polio again, with four countries -- Ethiopia, Kenya, Sudan and Uganda -- having reported no cases of the crippling disease for more than a year, U.N. and other aid agencies said Friday. Companies start shipping U.S. flu vaccines Two flu vaccine makers said on Friday they had started shipping supplies for the U.S. market, one of the earliest starts ever to distributing seasonal influenza vaccine. The pill equally effective in obese, thin women Despite studies suggesting that birth control pills might not work as well in obese women, a new study suggests that they prevent pregnancy the same no matter what a woman weighs. Two die in Florida from mosquito-borne disease Two Florida residents have died from Eastern equine encephalitis, a mosquito-borne disease that is rare among humans but has infected a rising number of horses in the state, health officials said on Friday. Does CPR on a moving stretcher work? Paging script-writers: Pumping on a patient's chest during CPR while a stretcher careens down a hospital hallway works just fine, Chinese researchers have found. Calcium supplements linked to heart attacks: study Ordinary calcium supplements taken by the elderly to strengthen bones may boost the risk of heart attacks, according to a study released Friday. US Army failing troubled troops at home: general The US Army on Thursday said leadership and discipline have deteriorated at bases in the United States, with officers missing warning signs of soldiers on the verge of suicide. Stemcells coaxed to rebuild bone, cartilage Scientists have shown for the first time that it may be possible to replace a human hip or knee with a joint grown naturally inside the body using the patient's stem cells. DC pushes female condoms to fight HIV epidemic Charlene Cotton will talk to anyone about sex. Several days a week she stands behind a table decorated with a bowl of flavored condoms and safer sex pamphlets, calling to women passing on the street, "Come check out my table. Don't be scared."