CNN Health

Both men and women are responsible for pregnancy, yet the burden of preventing it often falls on one gender. Women can choose from a variety of options to control fertility while for generations, men have been limited to withdrawal, condoms and sterilization. But someday soon, a new method may allow men to shoulder a greater share of responsibility.

It may be time to add more branches to the human family tree. Researchers have come up with a estimation tool to determine the traits we have in common with early humans, Neanderthals and Denisovans, and how our histories crossed paths.

The relentless bullying became too much to handle for an 11-year-old girl with a "crooked" smile, her mother said.

These days, teachers often face classrooms filled with yawning students who stayed up late snapping selfies or playing online games.

There's this incredibly powerful idea in popular psychology that personality lies along a spectrum of chattiness: extroverts on one side, all drawing their energy from socializing, and then, on the other, introverts, who tap into their power within fortresses of solitude.

Measles is highly infectious, and new research shows that complications from the infection may be even more deadly than originally thought.

When you're sick, there's a good chance that taking medication will help you feel better. But for many kids -- and adults -- trying to swallow a pill might only make them feel worse.

The testicles of male mice infected with Zika shrank by 90% and their levels of sex hormones crashed, possibly permanently, says new study.

Crematoriums, morgues, funeral homes. These buildings, all of which are involved in rituals around death, often look as mournful as they sound.

A year ago, the residents of Flint, Michigan learned their water was contaminated with toxic levels of lead. Unfiltered water was unsafe to drink.

Late one night in April 2013, UK veterinarian Jonathan Cranston woke in agony. There was a sharp pain shooting through his chest.

Peanut allergies are among the most serious food allergies, requiring constant vigilance. In severe cases, exposure to even trace amounts of the nut can trigger a deadly reaction. But according to a new study published last week in the Journal of Allergy and Clinical Immunology, a tiny skin patch may help treat peanut allergies.

UNICEF is calling on world leaders to reduce air pollution, saying it leads to the deaths of more children yearly than malaria and HIV/AIDS combined.

The man blamed for bringing HIV to the United States just had his name cleared.

It's been about four years since Aimee Copeland lost her hands, a leg and a foot in a fight with flesh-eating bacteria, and she is bragging about beating friends in arm wrestling.

In the spirit of Halloween, treats can be tricky for kids with food allergies, which is one in 13 children under the age of 18 in the United States.

Pigs at family-friendly fairs are responsible for infecting children with a type of swine flu not previously seen in humans, according to a report published by Thursday by the US Centers for Disease Control and Prevention.