CNN Health

The anti-clotting drug warfarin, commonly known as coumadin, is no longer recommended for the treatment of atrial fibrillation except for a select subset of patients, according to new guidelines just released by the American College of Cardiology and the American Heart Association.

Among toddlers, spending a lot of time staring at screens is linked with poorer performance on developmental screening tests later in childhood, according to a new study.

Genes detected in antibiotic-resistant superbugs in the High Arctic originated in India, a new study finds.

If you've ever been wrongfully denied health insurance coverage, a recent court decision should give you hope in fighting your insurer and holding them accountable.

Fewer Americans are likely to own a gun now than 40 years ago, but those who do are more likely to own handguns over rifles or shotguns. As the proportion of those with handguns has increased, so has the number of children under the age of 5 who are dying from firearm injuries, according to a new study.

The world needs to come up with solutions to fight three interrelated pandemics -- obesity, starvation and climate change -- and it needs to do it fast before the planet is "burning," according to a report released Sunday in the Lancet.

The US Food and Drug Administration is warning of a shortage of a class of drugs used by millions to treat high blood pressure. The drugs known as ARBs, or angiotensin II receptor blockers, contain valsartan.

Cruise ships generate high levels of air pollution that could endanger the health of passengers, staff and port communities, according to an undercover report released Thursday.

Time and again, when it's introduced in a state legislature, the bill is touted as the most restrictive in the nation. It's often referred to as a "heartbeat bill" and seeks to ban abortions at the time when a fetus' heartbeat can be detected, which can be as early as six weeks into a pregnancy -- before many women even know that they are pregnant.

Three patients died after receiving excessive doses of pain medication at Mount Carmel Health System -- after the hospital had been alerted to potential problems with one of its doctors, the Ohio hospital said Thursday.

First, the US Centers for Disease Control and Prevention said not to kiss or snuggle with your chickens; now, the agency is cautioning against PDA with pet hedgehogs.

Flu activity increased over the past week, squelching hopes of an early peak and leading at least 12 states to shut down some schools.

Plastic straws and bags have received widespread attention as pollutants. But another, even bigger, plastic problem has been slipping under the radar -- cigarette filters.

When Michele Mordkoff and Allison Kanter were 5 months old, they were each adopted by loving families in the New York City area, two days apart. The infants, of course, didn't know it -- and their families weren't informed -- but the girls were twins. It was mid-October 1964, and the two wouldn't see each other again for more than 50 years.

Head injuries, fractures, cuts and bruises: Those are some of the injuries that more than 200 riders of electric scooters -- and those who were accidentally hit by or tripped over them -- experienced over a year in two hospitals in Southern California, according to a new study published Friday in the medical journal JAMA Network Open.

If you diet and hit the gym regularly but are not seeing the results you hope for, it could be down to your genes.

Stressed by the government shutdown, veterans who work in US prisons struggle to keep their PTSD in check and feel abandoned by the country they served.

It's a new year, and that means new apps on your tweens' and teens' phones. While the old standbys like Snapchat and Instagram are still going strong, there's no shortage of social media, video-sharing, and homework-help apps that are popular but not necessarily household names.

A gum infection was found to be a potential risk factor of Alzheimer's disease, in a new study published Wednesday in the journal Science Advances.

Plummeting temperatures and less daylight cause many people to cut back significantly on exercise during this time of year or to shift their exercise indoors, to the warmth and comfort of their home or gym. This may be tempting, but here are three great reasons (and a few precautions) to encourage you to bundle up and head outside to stay fit, happy and healthy this winter.