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Related Experiment Videos

Nutrient supply during recent European missions.

M Heer1, A Boerger, N Kamps

  • 1DLR-Institute of Aerospace Medicine, Cologne, Germany. martina.heer@dlr.de

Pflugers Archiv : European Journal of Physiology
|February 24, 2001
PubMed
Summary

Astronauts experienced nutrient deficiencies and excessive sodium intake during space missions, impacting bone health. Current dietary guidelines for Earth may be insufficient for long-term spaceflight, requiring further research into astronaut nutrition.

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Area of Science:

  • Space Medicine
  • Human Physiology
  • Nutritional Science

Background:

  • Spaceflight poses risks to crew health due to altered nutrient intake.
  • Previous missions revealed deficient energy, fluid, calcium, and excessive sodium intake.
  • Microgravity stresses cardiovascular and bone metabolism, impacting bone mineral density.

Purpose of the Study:

  • To evaluate the impact of controlled nutrient intake on astronauts during spaceflight.
  • To assess if Earth-based dietary reference intakes are adequate for long-term space missions.
  • To investigate bone metabolism changes in response to nutritional interventions in microgravity.

Main Methods:

  • Analysis of nutrient intake data from previous European space missions (D-2, EuroMIR 94, EuroMIR 95).

Related Experiment Videos

  • Implementation of controlled nutrient intake matching Earth-based dietary reference intakes for the MIR 97 mission.
  • Monitoring of specific bone formation and resorption markers in astronauts.

    • Main Results:

    • Astronauts exhibited deficient intake of energy, fluid, and calcium, with excessive sodium consumption.
    • Bone formation markers declined, while bone resorption markers increased in the MIR 97 astronaut.
    • The study suggests that Earth-based nutritional criteria may be inadequate for long-term space missions.

    Conclusions:

    • Inadequate nutrient intake during spaceflight negatively affects astronaut health, particularly bone metabolism.
    • Current nutritional guidelines may need adjustment for extended space missions to mitigate health risks.
    • Further research is crucial to optimize astronaut nutrition for long-duration space exploration.