Tens of thousands of cheerleaders exposed to virus during national competition, and people can still get mumps if they come into close, prolonged contact with an infected person.

Young women might have trouble getting regular periods if they breathe a lot of air pollution.

Women with two genetic mutations have a higher risk of breast cancer and should be screened, scientists say.

A diet high in fat and sugar, which could include fast food, may affect the immune system in the same way as a bacterial infection.

They assumed the white powder was cocaine but it was a powerful date-rape drug that almost killed them.

Autism rates increased for two decades; now the number of kids diagnosed with the developmental disorder might finally be leveling out.

A surrogate refused a baby’s parents’ wish for an abortion after finding out the unborn boy had a heart defect. Now she is calling on people to love them for their decision ultimately to "choose...

Getting enough deep sleep is important for you health. Here’s how many hours you need and how to get more.

You don’t need to have sex to catch HPV, according to these male virgins with the STD.

Black parents might report issues in their child’s development differently, leading to a racial disparity in how and when autism is diagnosed — and hurting the chances for early intervention.

Scientists may have found a way to manipulate fat cells to prevent obesity.

Long-term marijuana users are reporting debilitating vomiting and stomach pain, part of a mysterious but possibly rising condition linked to weed.