A study of 14 astronauts suggests that while space travel depletes red blood cells and bone, the body can eventually replenish them back on Earth with the help of fat stored in the bone marrow. The ...

NASA has observed a bizarre effect of human spaceflight: blood going backwards in astronauts' veins. The strange phenomenon also resulted in blood clotting for one astronaut, sparking a panic among ...

Blood sample analysis helps predict and manage physiological changes in astronauts, ensuring their health and well-being during space missions. Blood biomarkers reveal key physiological changes in ...

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Constipation is a common problem for astronauts. But exactly why the intestines slow down in space has remained unclear. Now, researchers from the University of Copenhagen, working with NASA, say they ...

A change in the volume of red blood cells has been documented in astronauts since the earliest space missions. Thanks to an experiment conducted aboard the International Space Station, a research team ...

A world-first study has revealed how space travel can cause lower red blood cell counts, known as space anemia. Analysis of 14 astronauts showed their bodies destroyed 54 percent more red blood cells ...