scope:

The National Aeronautics and Space Administration (NASA) policy for establishing requirements to protect the health and safety of crew and for providing health and medical programs for crewmembers during all phases of space flight, is authorized by NPD 1000.3, The NASA Organization, and NPD 8900.5, NASA Health and Medical Policy for Human Space Exploration. NPD 8900.1, Medical Operations Responsibilities in Support of Human Space Flight Programs, and NPD 8900.3, Astronaut Medical and Dental Observation Study and Care Program, authorize the specific provision of health and medical programs for crewmembers. NASA's policy is to establish requirements for providing a healthy and safe environment for crewmembers and to provide health and medical programs for crewmembers during all phases of space flight. Standards are established to optimize crew health and performance, thus contributing to overall mission success, and to prevent negative long-term health consequences related to space flight. In this Standard, the Office of the Chief Health and Medical Officer (OCHMO) establishes NASA's space flight crew health requirements for the pre-flight, in-flight, and post-flight phases of human space flight.