The collected evidence is in, and drinking about eight cups of water per day is, in fact, good for you.

So says a University of California San Francisco team who crunched the data from 18 randomized controlled trials.

“For such a ubiquitous and simple intervention, the evidence hasn’t been clear and the benefits were not well-established, so we wanted to take a closer lo...

In the midst of a childhood obesity epidemic, a new study is pointing to a way to help school kids maintain a healthier weight: clean, accessible drinking water.

The decidedly low-tech solution emerged in a study of 18 California elementary schools that serve largely low-income minority families. Researchers found that when they kicked off a "Water First" program -- which included putting...

Black and Hispanic communities in the United States are more often poor -- and also more likely to have harmful levels of per- and polyfluoroalkyl substances (PFAS) in their drinking water, a new study reveals.

Sources of PFAS pollution -- including major manufacturers, airports, military bases, wastewater treatment plants and landfills -- are disproportionately sited near watersheds that...

Water weight. It's the bane of dieters looking to lose pounds, causing bloating, puffiness and disappointment when stepping on a scale.

While a full 60% of your body is water, sometimes too much water is retained. That can make losing weight frustrating because it may seem like you aren't actually losing weight. Varying water levels can make a person's weight fluctuate by 2 to 4 pounds in...

Could hydration hold the key to longevity?

Maybe, suggests new research that discovered older adults who are properly hydrated may be healthier and live longer than those who aren't, having less incidence of conditions like heart and lung disease.

"Staying well-hydrated may slow down aging, prevent or delay development of chronic diseases, and therefore prolong disease-free life," s...

Climate change could spell trouble for those with heart failure, a new study suggests.

When the temperatures soared in France during the summer of 2019, the heat wave appears to have worsened the conditions of heart failure patients, researchers report.

"The finding is timely, given the heat waves again this year," said study a...

In an effort to further lower lead levels in drinking water, the Biden administration on Thursday announced $2.9 billion in infrastructure bill funds for lead pipe removal and tighter lead limits.

The new, tougher limits to be imposed by the Environmental Protection Agency (EPA) are expected to be finalized by 2024 and would require the replacement of remaining lead drinking water pipes a...

Contaminated water is the leading cause of large-scale outbreaks of infectious diseases that can be transmitted from animals to people, researchers say.

These health threats are called zoonotic infectious diseases, and recent outbreaks include COVID-19 and Ebola.

"In the age of COVID-19, it is understandable that many people may not realize how many outbreaks of other infectious dis...

Everyone knows that drinking plenty of water every day can improve your health in a myriad of ways, but here's a lesser-known benefit: New research suggests that middle-aged adults can lower their long-term risk for heart failure by simply drinking enough water on a daily basis.

The finding follows an analysis that stacked heart health up against blood salt levels -- an indicator for over...