The huge burden of obesity and other chronic conditions among people in the U.S. puts most of us at direct risk.

Muscles may “remember” in ways that will allow us to regain fitness once gyms reopen and we start working out again.

New research finds millions of people are getting enough calories but not enough essential nutrients. We asked leading researchers how to fix the problem.(Image credit: Meghan Dhaliwal/for NPR)

Scientists have come to realize that flu vaccines are less effective for people who are overweight or obese. Now researchers are trying to figure out why and hope to develop better vaccines.(Image credit: Derek Davis/Portland Press Herald/Getty Images)