Lost in space: Astronauts struggle to regain bone density | Nuclear Information

he researchers found that the shinbone density of nine of the astronauts had not fully recovered after a year on Earth — and were still lacking around a decade’s worth of bone mass.The astronauts who went on the longest missions, which ranged from four to seven months on the ISS, were the slowest to recover.“The longer you spend in space, the more bone you lose,” Boyd told AFP.

Guillemette Gauquelin-Koch, the head of medicine research at France’s CNES space agency, said that the weightlessness experienced in space is “most drastic physical inactivity there is”.

Lost in space: Astronauts struggle to regain bone density | Nuclear Information