Your daily cup of joe might be a quick pick-me-up, but it comes with a mixed bag of good and not-so-good effects on your health, a new study reports.

Drinking coffee helps people stay more active, but it also significantly robs some of sleep, researchers say.

And while java doesn't seem to cause irregular rhythms in the upper chamber of the heart, it can cause the lower chamber...

You might want to put the salt shaker down and pick up a banana.

Having less sodium and more potassium in your diet is linked to lower risk of heart disease, according to a new study involving more than 10,000 adults.

Prior observational studies had led to confusion about whether reducing current levels of salt in the diet might backfire, raising cardiovascular disease (CVD) risk, ...

The number of Americans diagnosed with "broken heart" syndrome has steadily risen in the past 15 years -- with the vast majority being women, a new study finds.

The condition, which doctors call stress cardiomyopathy, appears similar to a heart attack -- with symptoms such as chest pain and breathlessness. But its cause is entirely different: Experts believe it reflects a temporary weakne...

Last October, Katherine Romano was cleaning her house when her neck started to hurt. She kept going, trying to complete her chores, until the pain shifted to her upper back.

"It was so terrible, it took my breath away," she said.

Resting didn't help. The pain moved to her left arm. She began to feel nauseated. The day before, her stomach hurt. She thought it might be diverticulitis....

Leaky heart valves can put pregnant women at serious risk, according to a large study that runs counter to established practice.

The condition used to be considered relatively harmless during pregnancy. But this analysis by Johns Hopkins University researchers of more than 20,000 individual medical records reveals that heart valve disease puts women at risk for bleeding, high blood pressu...

Marijuana has been linked to a doubling in the risk of a heart attack in younger adults, no matter how they use it, a new study reports.

Eighteen- to 44-year-olds who used pot were twice as likely to have a heart attack compared with non-users, whether they smoked, vaped or ate their weed, researchers found.

"We found it wasn't only smoking that had this kind of effect. The effect s...

Breast milk can give preemies' hearts a big boost, a groundbreaking study suggests.

"This study "¦ adds to the already known benefits of breast milk for infants born prematurely," said study leader Dr. Afif El-Khuffash, a clinical professor of pediatrics at the Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences in Dublin.

He said the findings offe...

The greener your neighborhood, the lower your risk of heart disease.

That's the takeaway from a new study, which reported that adding to a neighborhood's green space can have a big payoff for public health.

"For the cost of one emergency room visit for a heart attack, trees could be planted in a neighborhood with 100 residents and potentially prevent ten heart diseases," said study ...

Roaring, fast-moving blazes. Choking smoke. Fiery tornados. Thunderstorms and lightning.

The Dixie Fire -- now the single largest wildfire in California history -- continues to spread, having burned through more than 750 square miles of forest land north of Sacramento.

The astonishing spread of smoke from the fire, causing discomfort and illness to people hundreds or thousands of mi...

Young, healthy adults who try vaping for the first time may experience an immediate reaction that can harm cells and lay the groundwork for disease, according to a new study.

Just 30 minutes of vaping can increase oxidative stress, which occurs when there is an imbalance between free radicals (molecules that damage cells) and antioxidants that fight them, researchers said.

"Just lik...

In a study conducted in Scandinavia, loss of height among middle-aged women was linked to an increased risk of early death from heart attack and stroke, researchers report.

Some loss of height goes along with aging, and previous studies have suggested it may boost the odds of death from heart disease.

While women tend to shrink more than men with age, height loss in women has not be...