Study reveals immune system is dazed and confused during spaceflight

There is nothing like a head cold to make us feel a little dazed. We get things like colds and the flu because of changes in our immune system. Researchers have a good idea what causes immune system changes on Earth--think stress, inadequate sleep and improper nutrition. But the results of two NASA collaborative investigations--Validation of Procedures for Monitoring Crewmember Immune Function (Integrated Immune) and Clinical Nutrition Assessment of ISS Astronauts, SMO-016E (Clinical Nutrition A...