As we approach the end of the first 50 years of human space travel, much has been learned
about adaptation to microgravity and the risks associated with extended‐duration space
exploration. As the frequency and duration of flights grew, nutrition issues became more
critical and the questions to be answered became more complex: What are the nutrient
requirements for space travelers? Can nutrients be used as tools to mitigate the negative
effects of space travel on humans? How does nutrition interrelate with other physiological …