CNN Health

One of my first jobs was to keep a lookout for lions.

CNN's Sanjay Gupta looks into whether President Donald Trump's wall will help stop heroin -- and fentanyl, which is 50 times stronger than heroin -- getting into the US.

A leading vegetable supplier in California, Mann Packing, voluntarily recalled products that might have been contaminated with a harmful bacteria called listeria, the company announced last week.

Before the shock and horror subside after a mass shooting, a long-simmering debate inevitably heats up over gun control.

None of it was supposed to be garbage. Yet, for weeks, heaps of discarded possessions grew to towering heights across Puerto Rico.

Judges in two separate cases have ruled in favor of pharma giant Johnson & Johnson, overturning large financial judgments awarded to plaintiffs who believe the company's Baby Powder and Shower to Shower powder products caused their ovarian cancer. One award was to a California woman for $417 million, and another was to an Alabama woman for $72 million.

Scores of people are sick after an outbreak of salmonella poisoning in Louisiana that may have caused the death of one person, according to officials.

The genetic causes of breast cancer just got clearer.

Donald Trump has faced scrutiny over his multiple US military deferments during the Vietnam War but many Americans are still questioning what exactly qualifies as a draft exemption -- especially from a medical perspective.

Type A personalities are known for being punctual, all-in, organized, competitive and rule-following.

Teenagers and young adults with severe autism are spending weeks or even months in emergency rooms and acute-care hospitals, sometimes sedated, restrained or confined to mesh-tented beds, a Kaiser Health News investigation shows.

We've heard it all before. Yet the status quo endures. This time, though, because of the sheer volume of shared accounts, some see hope for change.

The EPA says this Louisiana town has the nation's highest risk of developing cancer from air toxins. The plant emitting the toxins says otherwise. Locals are outraged.

The EPA says this Louisiana town has the nation's highest risk of developing cancer from air toxins. The plant emitting the toxins says otherwise. Locals are outraged.

The US Food and Drug Administration has approved a second gene therapy for cancer, the first to target non-Hodgkin lymphomas.

After Hurricane Maria toppled the bridge that connects him to the rest of civilization and ripped the roof and walls off his house here in the central mountains of Puerto Rico, Ramón Sostre raised a weathered American flag above the wreckage.

CNN has released an investigation exposing the inappropriate and potentially fraudulent use of a popular nursing home drug called Nuedexta. Read it here.

The fatal effects of pollution are seen across our planet.

The 1980s are alive and well in the heartland of America. BMX. Three letters that evoke -- for anyone Generation X and older -- a cultural Trapper Keeper of desirable possessions including Nike Air, Atari, Walkmans, Vans, MTV and of course that conduit of childhood freedom and rebellion, the Bicycle Motorcross.