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Some people who don't have celiac disease say they feel better on a gluten-free diet. Researchers have long been puzzled as to why. A study suggests it could be because of a protein called zonulin.

Was it the enchilada pie? After three members of her family became miserably ill with gastroenteritis, a woman is determined to track down the microbial culprit. But the mystery may remain unsolved.

Saudi women gamers gather at an annual convention, dressing as their favorite characters and exercising freedoms they want to see more of in their lives.

San Diego officials urge caution as marijuana enthusiasts turn to a synthetic substitute known as "spice" that reportedly doesn't show up readily on drug tests.

The first studies of cannabidiol show promise for treatment-resistant epilepsy, but researchers caution that these are preliminary results and bigger, better studies are needed.

Using a rare Oval Office address, the president called last week's deadly San Bernadino shooting "an act of terrorism" and outlined how the U.S. is working to combat the growing threat from ISIS.

In his weekly radio address, President Obama says, "We are Americans. We will uphold our values — a free and open society. We are strong. And we are resilient. And we will not be terrorized."

Germany will send six Tornado jets, a naval frigate and up to 1,200 soldiers to Syria. But it will not be conducting airstrikes.

A U.S. law enforcement official revealed that the wife, Tashfeen Malik, had under a Facebook alias pledged allegiance to the Islamic State group and its leader.

The unusual meeting was called to consider a ban on certain uses of a new technique that can make precise changes in DNA. The main concern is altering genes in human sperm, eggs and embryos.