CNN Health

Almost everyone on Earth now breathes polluted air, according to an air quality map released Tuesday by the World Health Organization.

Tyson Foods is voluntarily recalling more than 130,000 pounds of cooked chicken nuggets because they may contain hard plastic, the US Department of Agriculture's Food Safety Inspection Service said Tuesday.

Andre Jackson, a high school football player in Ohio, died two days after sustaining an injury in a Friday night game.

The pharmacy chain pitches started in August: Come in and get your flu shot.

Apparently, it takes a village to explain a cough. Hillary Clinton's coughing spells along the campaign trail have drawn attention from supporters and opponents alike. Though Democrats insist Clinton merely has seasonal allergies, Republicans argue her cough suggests a more problematic health issue. Meanwhile, everyone is left to sigh and wonder: When is a cough "just" a cough -- and when do you need a doctor?

Diseases caused by fungi are deadlier than many think, killing around 1.5 million people globally each year.

The estimated annual health care costs related to obesity are over $210 billion, or nearly 21 percent of annual medical spending in the United States. Americans spend $60 billion on weight loss products each year, trying everything from expensive meal replacement products to do-it-yourself programs on the latest cell phone apps. We gather weight loss advice, voluntarily or involuntarily, from news outlets, social media and just about everyone.

Beef products are probably the cause of an E. coli outbreak that has sickened seven people in four states, according to the Centers for Disease Control and Prevention.

The school, like many around the nation, has a rule that prohibits the use of cell phones inside restrooms to respect the privacy of others.

Veteran, centenarian and Harley lover Ray Weser got to go on one last roaring motorcycle ride.

A study links the diversity of bacteria in feces with a person's weight, and scientists think transplants to widen the variety could help prevent obesity.

A new blood test could help doctors tailor treatments for depression by identifying which drugs will be most effective in each patient.

Seven people died from drug overdoses in Ohio's Cuyahoga County on Saturday, prompting the county's medical examiner to issue a public health warning.

They appear overcome with emotion and share a kiss, ecstatic to be back in each other's arms.

Katie Prager, the wife in the real "Fault in Our Stars" couple, died Thursday after complications from cystic fibrosis and a lung transplant. She was 26 years old.

Cell phone video released Friday recorded Rakeyia Scott, the wife of Keith Lamont Scott, who was fatally shot by Charlotte police, screaming, "He has a TBI," or traumatic brain injury. On Thursday, Scott's mother told CNN affiliate WCSC about a "near-death" motorcycle accident her son survived last year.

Most people have a story or two about teachers who really gave of themselves. But Natasha Fuller's most likely trumps everyone's.

Hearing the words "$3 billion," most of us felt vaguely stunned, so we missed hearing what came next during Wednesday's announcement from Facebook founder Mark Zuckerberg and Dr. Priscilla Chan. The Silicon Valley couple also introduced the world to the new president of Chan Zuckerberg Science -- now perhaps the most influential scientist on the planet.

Terry Jones, best known for his part in the British comedy group Monty Python, has been diagnosed with a rare form of dementia, the British Academy of Film and Television Arts confirmed today.