Mar 3, 2014 — States are legalizing marijuana even though there's no clear understanding of its impact on health. The drug hasn't been subjected to the kind of rigorous medical research that would find that out.
Feb 21, 2014 — The number of people diagnosed with thyroid cancer has tripled since 1975, but more lives haven't been saved as a result.
Feb 10, 2014 — About 10 percent of people with asthma aren't able to control it with medicine. The procedure delivers zaps of energy that burn off the outer layer of smooth muscle cells in the lungs' airways. That way there's less muscle to contract.
Jan 27, 2014 — Clubfoot is a common birth defect that can make walking difficult. It used to be treated with surgery, which could have serious side effects, but a simple nonsurgical solution is now the norm. It took years of pushing by parents for that treatment to become accepted.
Jan 17, 2014 — Home wart-freezing devices can spark fires, the Food and Drug Administration warns, and people have been burned. People also can be injured by using these frostbite-inducing tools too enthusiastically, dermatologists say, damaging skin as a result.
Jan 13, 2014 — There's evidence that many standard treatments for back pain — including surgery, spinal injections and painkillers — are often ineffective and can even worsen and prolong the problem.
Dec 10, 2013 — All medications come with risks, and one of the risks with popular heartburn medicines seems to be that they interfere with the absorption of vitamin B-12. That can cause troubling symptoms, from anemia and depression to dementia.
Dec 6, 2013 — The only person known to have been cured of AIDS got a bone marrow transplant, so when two AIDS patients in Boston appeared to be free of the virus after transplants, scientists hoped they were cured, too. But the HIV virus has returned in both.
Nov 4, 2013 — Scientists are asking people to contribute samples of their gut microbes to help figure out how those microbes affect human health. But ethicists say sharing that information, as well as the personal health data that make it useful to researchers, poses risks. That's especially true for children.
Oct 18, 2013 — Researchers say naturally occurring viruses that target bacteria might one day help help treat human infections with germs that are resistant to antibiotics. The research is still in the early stages, and there are quite a few challenges to overcome before a treatment can even be tested in humans.