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Taking calcium supplements may raise the risk of developing dementia in women who have previously had a stroke, or have early signs of other cerebrovascular disease.

The Mediterranean lifestyle -- which includes not only eating well, but also exercising and socializing -- may be beneficial for people's risk of depression, a new study finds.

The popularity of trampoline parks is on the rise, and with it the number of emergency-room visits for injuries that kids get while at these parks, according to a new study.

Inhaling secondhand marijuana smoke even for just 1 minute may temporarily affect how blood vessels function, according to a new study done in rats.

A specially-designed energy drink that contains ketones may help people exercise at a higher level, a new study finds.

In a new study, researchers looked at what kind of feedback was the most motivating to get people to exercise.

In a new report, researchers look at the numbers of people that police killed or injured during one year, broken down by race and ethnicity.

The number of young kids in Colorado who accidentally consume marijuana has increased since buying the drug for recreational use became legal there in 2014, according to a new study.

A detailed new map of the human brain's outer layer identifies nearly 100 brain areas that have not been previously reported, according to a new study.

Pediatricians should help educate their patients about sex and help parents learn how best to talk to their kids about sexuality, a new report says.

Eating fruits and vegetables can make you healthier in the long run. But also, they may help you feel happier, in much less time.

The huge array of toxins produced by venomous fish are a largely untapped potential for medicines, researchers say.

Taking prenatal vitamins may be a waste of money, a new review suggests.

For kids, sucking their thumbs or biting their nails may mean a lower risk of developing allergies later in childhood, according to a new study that spanned three decades.

Zapping the brain's vision center with electricity can help people with vision problems see better, a new study finds.

The idea of winning money in a game might be less exciting to people who frequently use pot.

Telling yourself "I can do better next time" does actually lead to doing better next time, according to a new study.

For one man, taking herbal supplements caused a host of problems.

People with higher levels of education may be more likely to develop certain types of brain tumors, a new study from Sweden suggests.

People who procrastinate may be more likely to insomnia, a new study finds.

Higher levels of air pollution may be linked with worse mental health in children, a new study suggests.

How much do kids need? New guidelines offer answers.

People who use marijuana for many years may lose their brain's "natural" responses to rewards, a new study suggests.