The study results suggest that human health can be "mostly sustained" for a year in space, the researchers said. The results show "the resilience and robustness of the human body," said Steven Platts, deputy chief scientist for NASA's Human Research Program, which coordinated the study. "The Twins Study has been an important step toward understanding epigenetics and gene expression in human spaceflight," said J.D. After more than 50 years of human spaceflight, researchers know some of the risks posed to the human body by being in zero gravity. "The Twins Study demonstrated on the molecular level the resilience and robustness of how one human body adapted to the spaceflight environment," said Jenn Fogarty, chief scientist for NASA 's Human Research Program.

Source: CNN April 11, 2019 18:00 UTC