Produced by: Manoj Kumar
NASA astronaut Sunita Williams sparked concerns after a video address about her supposed weight loss. While Williams claims fluid shifts are behind the rumors, Dr. David Shaker, an internist at Holy Name Physicians in Hackensack, New Jersey sees signs of low-calorie intake.
Weightlessness causes fluid to move upward, making astronauts’ heads appear puffy. Williams credits this shift for her changed appearance, though photos suggest a more “gaunt” look.
Despite claiming muscle gains in her thighs and buttocks, Williams’ appearance tells a different story. Dr. Shaker notes that microgravity usually causes muscle groups to shrink, not expand.
Originally set for 10 days, Williams' mission aboard the ISS now stretches to February 2025 due to technical issues. The extended isolation and high-caloric demands may contribute to her visible changes.
Dr. Vinay Gupta, reviewing her images, noted a “sunken” look, adding to concerns. NASA, however, assures her health is monitored, with personalized diet and fitness routines onboard.
Astronauts burn 3,500 calories daily on the ISS and rely on intense workout routines. Meeting these dietary needs is crucial, especially when symptoms like fluid shifts and motion sickness impact appetite.
Dr. Shaker was quoted in a Daily Mail report that months of isolation can affect astronauts' mental and physical health, possibly leading to symptoms of anxiety or depression that can suppress appetite.
NASA’s chief medical officer insists Williams is in good health, despite rumors. Still, sources report her weight loss as a priority concern, pushing her diet to possibly 5,000 calories daily.
In extreme environments, mental resilience meets biochemical reality. Dr. Shaker highlights how serotonin and dopamine levels may drop, affecting both mood and weight—revealing space travel’s hidden strains.