CNN Health

Residents of Arkansas are one step closer to getting legal access to medical marijuana.

The US Food and Drug Administration approved a cannabis-based drug for the first time, the agency said Monday.

More than 11,200 calls concerning children's exposure to buprenorphine, an opioid medication used to treat opioid use disorder, were made to US poison control centers from 2007 to 2016, a new study found. Eighty-six percent of the exposures were in children below the age of 6; 89% of the exposures were unintentional.

Learning that a child is seriously -- or even terminally -- ill is overwhelming and life-changing.

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.