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It's been an unnerving week for China's economy, the world's second largest. Prices fell so sharply on the Shanghai stock exchange that trading had to be halted for the day — twice.

A blockade by rebel forces has kept vital medicines and supplies from reaching hospitals. Everyone is suffering, from war victims to cancer patients.

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.

NPR's Scott Simon and Howard Bryant of ESPN.com and ESPN the magazine talk about college football championships, how Tiger Wood parents in the public eye, and Kobe Bryant's retirement.

Compared to this time four years ago, nearly 50 percent more ads have run in the presidential campaign. The candidate spending the most on ads is Jeb Bush, now mired at the bottom of the polls.

For a generation of young Spaniards, temporary employment has become the new normal. As voters head to the polls on Sunday, many are wondering if that should really count as recovery.

The agency plans to reduce the incentive for doctors to use the most expensive drugs and link prices to patient outcomes, perhaps paying less when patients have to be admitted to a hospital.

Proposed federal rules would let employers penalize overweight or obese workers by making them pay more for health insurance. But having a high BMI doesn't mean you're not healthy.

Researchers say Colombia offers a chance to learn more about Zika's possible link to microcephaly. If the country sees a sudden rise in cases as Brazil did, that's stronger evidence of a connection.

Losing vision due to macular degeneration can spark many other losses, and patients are more apt to be depressed. An eye doctor discovers there are things she can do to help.