CNN Health

Most of the time when you hear me talking about food, I am talking about the food we eat. But a few years ago, I realized I needed to talk more about the food we DON'T eat.

In selfies, a woman documented a lump under her skin for weeks before doctors were able to remove it -- and it didn't stay in one place, according to a case report in the New England Journal of Medicine.

Doctors don't know what causes Alzheimer's disease or the best way to treat it, but they have new evidence to suggest that a common virus may play a role in who develops the condition.

Koko, the gorilla who mastered sign language and showed the world what great apes can do, has died.

A pediatrician in Colorado examines young children newly separated from their parents and shares her observations with CNN. She says that while their physical condition was fine, emotionally "they were the opposite of stable."

A 9-year-old boy in Greece permanently injured his left eye when he repeatedly gazed into a laser pointer's green beam, doctors say.

With all eyes on the United States and North Korea, experts warn that biological warfare could be more catastrophic than a nuclear attack.

Although he's older than the Giza pyramids and Stonehenge, the 5,300-year-old mummy of Otzi the Tyrolean Iceman continues to teach us things.

A long-awaited government study on the toxicity levels chemicals commonly used in manufacturing was made public on Wednesday, months after a White House official warned that it could be a "potential public relations nightmare."

The World Health Organization no longer classifies transgender people as mentally ill.