WASHINGTON - Doctors should offer a daily HIV prevention pill to healthy people who are at high risk of getting infected with the virus, an influential health care panel recommended Tuesday.

SEATTLE - Marijuana has been shown to help ease pain and a few other health problems, yet two-thirds of U.S. states have decided pot should be legal to treat many other conditions with little scientific backing.

CHICAGO - Dozing off to late-night TV or sleeping with other lights on may mix up your metabolism and lead to weight gain and even obesity, provocative but preliminary U.S. research suggests.

VANCOUVER - Men and women who smoke marijuana could be adding to their infertility woes if they are already struggling to start a family, says an obstetrician-gynecologist who is calling for more research into reproductive aspects of the recreational drug that may be increasingly used in Can…

WASHINGTON - To save babies from brain-damaging birth defects, University of Pittsburgh scientist Carolyn Coyne studies placentas from fetuses that otherwise would be discarded — and she's worried this kind of research is headed for the chopping block.

VANCOUVER - Parents should prioritize healthy habits such as physical fitness, nutrition and sleep over screen time long before kids reach their teenage years when arguments over devices can become a huge issue, says a doctor who leads the Canadian Pediatric Society's digital health task force.

CHICAGO - In a story June 2 about prostate cancer drugs, The Associated Press erroneously described a study involving the drug Erleada. The study tested the drug in men at high risk of having their cancer spread beyond the prostate, not those in whom it already had spread.

NEW YORK - People with a DNA mutation that reduces their chance of HIV infection may die sooner, according to a study that suggests tinkering with a gene to try to fix one problem may cause others.

SILVER SPRING, Md. - CBD products have surged in popularity despite confusion around their legal status . Now U.S. regulators are exploring ways to officially allow the hemp ingredient in food, drinks and dietary supplements.

A California company says its experimental blood test was able to detect many types of cancer at an early stage and gave very few false alarms in a study that included people with and without the disease.

WASHINGTON - We share our bodies with trillions of microbes that are critical to staying healthy, but now scientists are getting a much-needed close look at how those bugs can get out of whack and spur disease.

Six months after a Chinese scientist was widely scorned for helping to make the world's first gene-edited babies, he remains out of public view, and new information suggests that others may be interested in pursuing the same kind of work outside the United States.

U.S. regulators have approved the most expensive medicine ever, for a rare disorder that destroys a baby's muscle control and kills nearly all of those with the most common type of the disease within a couple of years.

A half-price version of Eli Lilly's popular Humalog insulin is now available, following the company's promise in March to offer diabetics a more affordable option amid fierce criticism of soaring insulin prices.

IN NORTH America, end-of-life care is often an unknown and not understood until it is a reality faced by ourselves or our loved ones. At St. Joseph’s Care Group (SJCG), hospice and palliative care are delivered by a diverse group of skilled professionals. The care team can include palliative…

LONDON - The World Health Organization spent nearly $192 million on travel expenses last year, with staffers sometimes breaking the agency's own rules by travelling in business class, booking expensive last-minute tickets and travelling without the required approvals, according to internal d…

Teens who have obesity surgery lose as much weight as those who have the operation as adults and are more likely to have other health problems such as diabetes and high blood pressure go away, a study finds.

When the man arrived at the hospital with severe abdominal pains, a nurse didn't consider it an emergency, noting that he was obese and had stopped taking blood pressure medicines. In reality, he was pregnant — a transgender man in labour that was about to end in a stillbirth.

America's baby bust isn't over. The nation's birth rates last year reached record lows for women in their teens and 20s, a government report shows, leading to the fewest babies in 32 years.

WASHINGTON - Wilnelia Cruz-Ulloa spent the last months of her life in a New York City hospital, waiting for a donated liver that never came. Doctors had urged the 38-year-old to move to another state that has more organs to go around. But she couldn't afford to.