CNN Health

Late one night in April 2013, UK veterinarian Jonathan Cranston woke in agony. There was a sharp pain shooting through his chest.

Peanut allergies are among the most serious food allergies, requiring constant vigilance. In severe cases, exposure to even trace amounts of the nut can trigger a deadly reaction. But according to a new study published last week in the Journal of Allergy and Clinical Immunology, a tiny skin patch may help treat peanut allergies.

UNICEF is calling on world leaders to reduce air pollution, saying it leads to the deaths of more children yearly than malaria and HIV/AIDS combined.

The man blamed for bringing HIV to the United States just had his name cleared.

It's been about four years since Aimee Copeland lost her hands, a leg and a foot in a fight with flesh-eating bacteria, and she is bragging about beating friends in arm wrestling.

In the spirit of Halloween, treats can be tricky for kids with food allergies, which is one in 13 children under the age of 18 in the United States.

Pigs at family-friendly fairs are responsible for infecting children with a type of swine flu not previously seen in humans, according to a report published by Thursday by the US Centers for Disease Control and Prevention.

Like many Americans, you probably think you're pretty charitable. Perhaps you donate money to the needy or ill, give away your old clothes, volunteer at your child's school or participate in holiday gift drives in December.

With access to the right medication, HIV is no longer a death sentence. CNN's Sara Sidner talks about how many people are living with HIV.

A little over 130 million years ago, a plant-eating dinosaur was roaming the present-day area of Sussex, England, when -- trapped by the muds of a thick swamp -- it fell backward to his death and was forgotten.

Fleshing-eating bacteria survivor Aimee Copeland discusses the progress she's made since losing her arms and legs four years ago.

Bruce and Blair Johanson always knew that they were identical twins, even though a medical intern told their mother when they were born that they were fraternal. Fortunately for Bruce, the intern was wrong. Because they are identical, Blair was able to help save Bruce's life by donating stem cells to help him fight cancer.

A startling new photo shows an Indiana woman passed out behind the wheel of a car after an apparent heroin overdose with a syringe clutched in her fist.

Cranberries, cranberry juice and cranberry products are often recommended as a natural way to prevent urinary tract infections, but a new study suggests that this effort may be futile.