It's no secret that prolonged periods spent in microgravity take a toll on the human body. This includes muscle atrophy, loss of bone density, and changes in the cardiovascular, endocrine, and nervous systems. But for female astronauts, there is also the greater risk of developing blood clots, according to recent findings. This highlights the fact that, to date, most studies of human health in space have involved male astronauts. But as the number of female astronauts continues to grow, more