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Nutritional Monitoring for the International Space Station (NutrISS)
Principal Investigator
Research Area:
Metabolism and nutrition
Species Studied
Scientific Name: Homo sapiens Species: Human

Long-term space flight induces relevant changes in body composition, and almost invariably brings a one to five percent of body mass loss. Results from bed rest research, a model simulating the microgravity conditions of space on the human body, and from fewer studies during human space flight, shows the importance, and the effectiveness of nutritional intervention to counteract, or limit, the detrimental effects of microgravity on metabolism and skeletal muscle. Changes in fat mass, either loss or deposition, can accelerate muscle atrophy in microgravity.

A diet maintaining a near-neutral energy balance, and/or increasing protein intake, can limit microgravity-induced bone and muscle loss and insulin resistance. Moderate protein supplementation is currently prescribed to International Space Station (ISS) crewmembers, while energy requirements are typically estimated using standard equations, including the World Health Organization and Dietary Reference Intake. Monitoring changes in musculoskeletal fitness and body composition during space flight is crucial to optimize feedback nutritional prescriptions aimed to counteract microgravity negative effects.

The literature on this topic is limited to a few experiences. Even though the bioimpedance analysis has been carried out onboard the ISS in previous flights, it was never used to monitor and prescribe countermeasures during space flight. The Nutrition Monitoring for the International Space Station (NutrISS) investigation provides optimal monitoring and feedback tuning of nutrition requirements, to allow a sustainable metabolic control of adverse microgravity effects on the musculoskeletal systems in astronauts.
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Nutrition assessment
Body composition

Photo Gallery
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Data Information
Data Availability
Archiving in progress. Data is not yet available for this experiment.

Adiponectin, total
Amino acids
Blood urea nitrogen (BUN)
Body height
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Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
Expedition 60 06/24/2019 10/03/2019 101 days
Expedition 61 10/03/2019 02/06/2020 126 days

Additional Information
Managing NASA Center
Johnson Space Center (JSC)
Responsible NASA Representative
Johnson Space Center LSDA Office
Project Manager: Jessica Keune
Institutional Support
European Space Agency (ESA)
Proposal Date
Proposal Source