Medical Treatments

Scientists were able to make immature sperm cells. If they can make the sperm viable, researchers could help men who thought they'd never have kids. But the findings also raise ethical questions.

Research finds when hospitals initiate rapid response programs to treat stroke victims, response time is cut and fewer patients die. The stroke patients also have fewer significant disabilities.

Lessons in optimism from very ill children inspire pediatric oncologist Jim Olson in his hunt for better treatments for brain tumors.

Several bio-tech companies are developing exoskeletons that give people superhuman abilities. But these robotic suits are also doing something simpler: They're helping paralyzed veterans walk again.

Benzodiazepines like Xanax and Valium are among the most widely prescribed drugs in the U.S. Patients and addicts often mix them with prescription painkillers — sometimes to deadly effect.

Twenty years ago, many scientists didn't think that genes could cause diseases like cancer. The discovery of the BRCA gene for hereditary breast cancer changed that. Mary-Claire King tells how.

Scientists say a Mississippi child has been cured of HIV. The research findings, released Sunday, could help cure other HIV-infected newborns.

Federal health officials warned that a dangerous group of superbugs has become increasingly common in hospitals. The bacteria are said to be resistant to virtually all antibiotics.

A government study of the medical records of 1,000 kids found no correlation between the number of vaccines a child received and his or her risk of autism spectrum disorder.

Journals usually require researchers to reveal genetic sequences for a toxin that is the subject of a scientific paper. The requirement was waived for a new botulinum toxin because of security risks.