Santos Brizuela spent more than two decades laboring outdoors, persisting despite a bout of heatstroke while cutting sugarcane in Mexico and chronic laryngitis from repeated exposure to the hot sun while on various other jobs.

Firefighter and paramedic Mike Camilleri once had no trouble hauling heavy gear up ladders. Now battling long COVID, he gingerly steps onto a treadmill to learn how his heart handles a simple walk.

"This is, like, not a tough-guy test so don't fake it," warned Beth Hughes, a physical therapist at Washington University in St. Louis.

The National Institutes of Health is beginning a handful of studies to test possible treatments for long COVID, an anxiously awaited step in U.S. efforts against the mysterious condition that afflicts millions.

Monday's announcement from the NIH's $1.15 billion RECOVER project comes amid frustration from patients who've struggled for months or even years with sometimes-disabling health problems — with no proven treatments and only a smattering of rigorous studies to test potential ones.

A sickly ginger kitten named Bebe is pulled out of a cat carrier at a veterinary clinic in the Cypriot capital, Nicosia.

Australian researchers have diagnosed what is believed to be the first professional woman athlete with the degenerative brain disease chronic traumatic encephalopathy (CTE).

Spain sweltered in its first official heat wave of the year on Monday as the government announced a new department to investigate and alleviate the effects of extreme temperatures on human health.

The state weather agency, AEMET, said temperatures were predicted to hit 44 degrees Celsius (111 degrees Fahrenheit) in the country's south during the hot spell, expected to last until Thursday, and noted that heat waves have become more common during the month of June over the last 12 years.

The next big advance in cancer treatment could be a vaccine.

After decades of limited success, scientists say research has reached a turning point, with many predicting more vaccines will be out in five years.

What if treating obesity could be as easy as popping an effective pill?

That's a notion that has long fueled hope for many of the more than 40% of Americans who are considered obese — and fueled criticism by those who advocate for wider weight acceptance. Soon, it may be a reality.

A year after the U.S. Supreme Court overturned Roe v. Wade, some of the Republican Party's most powerful evangelical Christian voices are gathering to celebrate a ruling that sent shockwaves through American politics and stripped away a constitutional protection that stood for almost a half century.

At the Faith & Freedom Coalition's annual conference in Washington, GOP presidential candidates will be urged to keep pushing for stronger abortion restrictions, even as Democrats insist the issue will buoy them ahead of the 2024 election.

European Union officials warned Thursday there is a growing risk of mosquito-borne viral diseases such as dengue and chikungunya in Europe due to climate change.

The European Center for Disease Prevention and Control said that because Europe is experiencing a warming trend, with heat waves and flooding becoming more frequent and severe, and summers getting longer and warmer, the conditions are more favorable for invasive mosquito species such as Aedes albopictus and Aedes aegypti.