"By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today. If you're reading this on Earth, you're experiencing about 1 g worth of gravity. On Mars, you'd feel about 38 percent of Earth's gravity, or 0.38 g. The moon's gravity is even less, at just about 0.17 g, or a sixth of Earth's."
"The study, published on Friday in the journal Science Advances, shows that mice in space that were kept at 0.67 g maintained most of their muscular function and muscle fiber composition. But when the mice lived in an environment below that gravity, their muscles started to change for the worse."
"I think this provides some really interesting information about long-duration missions to Mars and beyond, says Mary Bouxsein, a co-author of the study and a professor of orthopedic surgery at Harvard Medical School, adding that it's somewhat reassuring that mice could maintain their muscular function witho"
Humans evolved for Earth's gravity, but space exploration reveals significant health consequences from microgravity, including organ displacement, gut bacteria disruption, and bone weakening. A groundbreaking study sent mice to the International Space Station to determine how different gravity levels affect muscle function. Researchers found that mice maintained normal muscular function and muscle fiber composition at 0.67g (67% of Earth's gravity), but experienced muscle deterioration below this threshold. Earth's gravity measures 1g, Mars provides 0.38g, and the moon offers only 0.17g. These findings establish a critical gravity threshold for maintaining human muscle health during extended space missions, offering valuable insights for future planetary exploration and off-Earth habitation.
Read at www.scientificamerican.com
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