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Nutrition. Sara R. Zwart, Ph.D. Nutritional Biochemistry Laboratory Johnson Space Center - NASA. Monica V. Trevathan Education Specialist Human Health and Performance Johnson Space Center - NASA. June 23, 2005. Learning Objectives.

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Sara R. Zwart, Ph.D.

Nutritional Biochemistry Laboratory

Johnson Space Center - NASA

Monica V. Trevathan

Education Specialist

Human Health and Performance

Johnson Space Center - NASA

June 23, 2005

learning objectives
Learning Objectives

Participants will expand their science content knowledge in the area of Nutrition by:

  • Describing the importance of proper nutrition for our bodies on Earth and for human space exploration.
  • Identifying human body systems that are affected by inadequate nutrition (on Earth and in space).
  • Explaining some challenges in nutrition and food for human exploration and long duration space flight.
adaptation to weightlessness
Adaptation to Weightlessness
  • Muscle
  • Psychological/ Behavioral/ Performance
  • Bone
  • Fluid shifts, hematological
  • Taste & odor
  • Cardiovascular
  • Neurosensory
  • Gastrointestinal
  • Sleep &circadian rhythm
  • Environmental
what is the function of nutrition
What is the Function of Nutrition?
  • Psychosocial aspects
  • Meet energy/nutrient requirements
  • Countermeasure
classroom project idea
Classroom Project Idea
  • Go to www.mypyramid.gov
  • My Pyramid Tracker can track food intake for 24 hours and give a report
vitamin d16
Vitamin D
  • Stimulates calcium absorption in the intestine
  • Deficiency can lead to:
    • Rickets
    • Osteomalacia
poll question
POLL QUESTION

Which of the following is NOT a source of Vitamin D?

nutrients critical for bone health
Nutrients Critical for Bone Health
  • Calcium
  • Vitamin D
  • Vitamin K
  • Phosphorus
  • Magnesium
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Bone

Bone breakdown

Bone formation

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Bone Loss

  • Bone Loss
  • Fracture Risk
  • Stone Risk

Adapted from Heaney et al, 2000

potential countermeasures
Potential Countermeasures
  • Nutrition
  • Exercise
  • Pharmacology
biochemical markers of bone breakdown
Biochemical Markers of Bone Breakdown
  • N-telopeptide
  • Helical peptide
sodium
Sodium

NTX (nmol/d)

Level of dietary sodium at each stage of the study

Experiment days

omega 3 fatty acids
Omega-3 Fatty Acids
  • Beneficial effects on cholesterol, lipid metabolism, and cardiovascular health
  • Inhibit muscle loss in subjects with hyper-catabolic diseases
  • Protective effects on bone health
omega 3 fatty acids27
Omega-3 Fatty Acids
  • Clinical trial with cancer cachexia patients

(Wigmore et al. 1996)

chicken bone in acid
Chicken Bone in Acid
  • In the classroom, use the “famous” chicken bone in acid lab experiment to demonstrate acid effects on bones
  • See: http://haco.jsc.nasa.gov/pdf/pH Experiment.pdf
  • ….plus, ideas for more on nutrition and bones!
next stop mars
Next Stop: Mars!!
  • Nutrition is critical due to length of missions
  • Critical issues:
    • Are vitamins stable after exposure to deep-space radiation?
    • Are nutrients stable for long shelf life (up to 5 years)?
food system issues
Food System Issues
  • Nutrient content
  • Palatability
  • Shelf-life
  • Preparation
  • Storage
  • Trash
how will extreme conditions of space affect food supply
How will Extreme Conditions of Space Affect Food Supply?
  • Closed food system
  • Radiation
  • Long-term storage
  • Depletion of a single nutrient could be deadly after 3 years
for example
For Example…

Vitamin B1 (thiamine)

  • Easily destroyed by heat and light
  • Deficiency
    • beriberi
    • develops within 2-3 months
    • neurological and cardiovascular effects
another example
Another Example

Vitamin C

  • Deficiency
      • Scurvy
      • Bleeding around hair follicles, gums and underneath fingernails
  • Effects of radiation and long-duration storage are unknown for space flight
nutrition research
Nutrition Research

On Earth and in space:

  • Nutrition is more than just eating food
    • Food choices are important
  • Nutrition affects all body systems
  • Countermeasures for conditions such as osteoporosis
related nasa education material
Related NASA Education Material
  • National Space and Biomedical Research Institute
  • Activities Guides for Teachers
  • 5-8 grade

http://www.nsbri.org/Education/index.html

related nasa education material37
Related NASA Education Material
  • NASA CONNECT™
  • Math & Science integration
  • “Better Health from Space to Earth”
  • Grades 5-8

http://connect.larc.nasa.gov

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Sara R. Zwart, Ph.D.

Nutritional Biochemistry Laboratory

Johnson Space Center - NASA

Monica V. Trevathan

Education Specialist

Human Health and Performance

Johnson Space Center - NASA

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