However, Williams and Wilmore, as well as NASA officials, want to reassure the public that ... space due to the lack of regular force on the muscles and bones, said former astronaut Mike Massimino. "We need that stuff to remain healthy," he said ...

A recent photo of Williams aboard the ISS sparked rumors about her health, restoring the media's habit of prying into the appearance of women astronauts.

In a video released Monday by NASA, stranded astronaut Sunita Williams, 59, offered a surprising reason for her weight loss during the five months she’s been stuck on the International Space Station (ISS) with fellow astronaut Barry “Butch” Wilmore ...