Updated: 10:43 PM There are more than 20,000 available herbal products in the United States. About one in five Americans report using a supplement in the past year. But these alternative remedies are not regulated by the FDA and some of them might be deadly.

Updated: 10:40 PM 12-million Americans have peripheral arterial disease -- a chronic disorder that limits blood flow to the pelvis, legs or arms. At its worst, it can cause dangerous complications. Treatment options range from lifestyle changes, exercise and medications to angioplasty or even surgery. Now, for patients with the most serious blockages, researchers are studying a new, experimental option: Adult stem cells.

Posted: 9:41 PM What good is a record deal when you are dying? A talented rapper learns the true meaning of brotherly love when his older brother saves his life by giving him what's in short supply in the African American community - A donated kidney.

Updated: 9:43 PM It's the most common cancer in children and teens. Leukemia is a cancer of the blood cells that accounts for one out of every three childhood cancers. Cure rates are higher than ever, but for some children who can't be cured with traditional therapies like chemo, doctors are looking at a new, experimental option: Stem cells. The key to success is a perfect match.

Updated: 5:41 PM At some point or another, we'll all suffer from cold hands. Most of us warm up within 15 or 20 minutes. But if yours don't, it could mean an underlying health condition. In one woman's case, it almost cost her her hand.

Updated: 10:26 PM The most aggressive form of brain tumor has a new enemy. Gene therapy is giving doctors and patients high hopes.

Updated: 4:12 PM Each day, more than 30 kids are born with hearing loss in the U.S., making it the most common birth defect. Without early intervention, special education services for these children can top one million dollars. Now, a new study tracks how these children can learn to listen, talk and read.

Updated: 11:30 PM 2300 cases of bone cancer are diagnosed each year in the United States. Although it's relatively rare, treatment for this cancer can involve disfiguring surgery to remove large areas of tissue, and in severe cases, even amputation. Now, a donor bone gave one young girl a new leg and new hope for an active life.

Updated: 4:10 PM Williams syndrome is a genetic disorder that causes medical and developmental problems. Just one in 7500 babies is born with it, but help for these tiny victims could bring help to millions who suffer from hypertension and anxiety.

Posted: 9:54 PM May is National Physical Fitness and Sports Month, so we sat down with Dr. Nancy Van Vessem, the chief medical officer at Capital Health Plan, to find out why movement is so important in keeping healthy.

Updated: 9:27 PM Imagine being hungry and not being able to eat without feeling sick. For 1.5 million Americans who suffer from gastroparesis, it's reality. And for 60% of the children diagnosed with the disease, the cause is not known. Now, doctors are using a new concept to change the lives of children living with this stomach condition.

Updated: 9:09 PM We depend on our lungs every day for every breath, but 12-million people in the U.S. suffer from lung diseases -- from bronchitis to emphysema. Medications can help those patients breathe easier, but what if you had those chronic problems, plus a hole in one of your lungs? For one man, new technology came to the rescue when nothing else could help.

Updated: 4:04 PM Just ten years ago, patients with varicose veins had those veins ripped out of their body with metal piping, and while modern technology has moved on to less-invasive techniques, pain has still been an issue. Now, a little precious metal is making a big difference for the 40% of women dealing with this problem.

Updated: 3:50 PM Rhinoplasty -- a nose job -- is one of the top five cosmetic surgical procedures performed in the U.S. each year. Last year, 252,000 people had their nose surgically corrected. Now, doctors have a way to rebuild better noses in less time with less pain for the patient.

Posted: 11:25 PM If you use it too much, you could lose it. We're talking about your voice. Teachers, lawyers and others who talk a lot each day are at risk for a condition that causes pain and hoarseness. Now, there's a new way to help those folks get their voices back and it doesn't involve any drugs at all.

Updated: 10:19 PM Every 34 seconds, someone in the United States has a heart attack. Almost half of them will die. How quickly you're treated makes a big difference in whether or not you'll survive. Now, an innovative way to treat heart attack patients means they're not only surviving but thriving.

Updated: 3:40 PM The number one cause of death for both men and women in the U.S. is heart disease, and the most common type of heart disease here is coronary artery disease, which can lead to heart attack. Although genes play a big part in diagnosis, experts say you can do a few things at home to reduce your risk of death.

Updated: 3:38 PM Aortic stenosis is a deadly disease that affects about 100-thousand people a year. In the past, without open heart surgery, it meant certain death within two years. Now, there's a new way to treat this common disease without surgery.

Updated: 4:12 PM Dysfibrinogenemia is a disorder that causes patients to bleed or clot too much. The condition can be especially dangerous in pregnant women. It took a big team of doctors, a precise combination of drugs and a lot of money and resources to help one woman deliver a healthy baby boy.

Posted: 9:54 PM Spring is here and that means warm weather and sunshine for most of us. For about 35 million other Americans, though, it means another nasty bout with seasonal allergies. And with May being national asthma and allergy awareness month, it's a good time to review the best home-based ways to snuff-out the sniffles.

Updated: 9:52 PM 166,000 Americans are living with spina bifida. The disease strikes before birth, often crippling a child's chances of walking and causing a dangerous buildup of fluid on the brain. Surgery usually takes place within a few days after birth, but now results from a new study have opened up the way for kids to get treatment before birth.

Updated: 4:05 PM Tiger Woods says he was one. Lindsay Lohan was accused of being one. Charlie Sheen may be one. We're talking about sex addicts. It's a term that's received a lot of attention lately. Some say it's real. Others say it's a real good excuse.

Posted: 6:40 PM One-point-five million Americans and five-million people worldwide are living with lupus right now. Lupus has no known causes or cures. Now, there's new hope. The FDA just approved the first new lupus drug in 50 years.

Updated: 10:03 PM Each of us has 20- to 25-thousand genes in our body. You think you're in control, but actually, someone else owns, yes owns, 20-percent of your genes. Biotech companies are snatching up the patent rights -- giving them sole control of any test, therapy or cure for certain diseases. Right now, the issue of patenting our genes is being played out in court.

Updated: 6:55 PM Marijuana is the most commonly-used illegal drug in the U.S. Now -- in 15 states and Washington D.C. -- it is legal -- but only if your doctor says you need it. So, is it a prescription for real medicine or a prescription for addiction?