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.
Reviewed by Megan Craig, M.Sc.Aug 21 2023 The study, published in Nature Communications, has important implications for health in space and on Earth.
Dr. Guy Trudel, senior study author, rehabilitation physician and researcher at The Ottawa Hospital and professor at the University of Ottawa "Thankfully, anemia isn't a problem in space when your body is weightless, but when landing on Earth and potentially on other planets or moons with gravity, anemia would affect energy, endurance, and strength and could threaten mission objectives," said Dr. Trudel. "If we can find out exactly what's controlling this anemia, we might be able to improve prevention and treatment.
Related Stories"Since red blood cells are made in the bone marrow and bone cells surround the bone marrow, it makes sense that the body would use up the local bone marrow fat as a source of energy to fuel red blood cell and bone production," said Dr. Trudel. "We look forward to investigating this further in various clinical conditions on Earth."
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