In mice, monkeys and people, exercise releases a protein called cathepsin B. And as blood and brain levels of this protein rise, memory gets better. But the protein has a dark side, too.
NPR's Lulu Miller tells the story of one runner who always believed he could break the four-minute mile. Then a terrible accident made him question if he would ever be the same runner.
A nutrition app may not be the top priority for someone who struggles to pay for groceries. But cellphones have the potential to improve the health of people with low incomes, if they can get them.
House Speaker Paul Ryan unveiled the health care component of congressional Republicans' policy agenda Wednesday, a long-awaited alternative to the Affordable Care Act.
Hundreds of thousands of U.S.-born children have had a parent detained or deported by immigration authorities. One family provides a glimpse into the mental health challenges these kids may face as a consequence.
After four or five of his patients died from opioid overdoses in one month, Craig Smith, a family doctor in Bridgton, Maine, realized he couldn't wait for someone else to offer addiction treatment.
Two women woke up to find they were blind in one eye. Then their eyesight quickly returned to normal. The likely cause? They had been gazing at their smartphone screens in the dark.