1 / 38

Nutrition - PowerPoint PPT Presentation

  • Uploaded on
  • Presentation posted in: General

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.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Presentationdownload


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

Slide1 l.jpg


Slide2 l.jpg

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 l.jpg

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 l.jpg

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 l.jpg

What is the Function of Nutrition?

  • Psychosocial aspects

  • Meet energy/nutrient requirements

  • Countermeasure

Classroom project idea l.jpg

Classroom Project Idea

  • Go to

  • My Pyramid Tracker can track food intake for 24 hours and give a report

Energy intake l.jpg

Energy Intake

Energy intake poll question l.jpg

In general, most astronauts eat less than their recommended intake. Does this necessarily mean they lose weight?


Body weight l.jpg

Body Weight

Slammd l.jpg


Slide14 l.jpg

Vitamin D

Vitamin d l.jpg

Vitamin D

Vitamin d16 l.jpg

Vitamin D

  • Stimulates calcium absorption in the intestine

  • Deficiency can lead to:

    • Rickets

    • Osteomalacia

Where is vitamin d synthesized in the body l.jpg

Where is vitamin D synthesized in the body?

Poll question l.jpg


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

Nutrients critical for bone health l.jpg

Nutrients Critical for Bone Health

  • Calcium

  • Vitamin D

  • Vitamin K

  • Phosphorus

  • Magnesium

Slide20 l.jpg


Bone breakdown

Bone formation

Slide21 l.jpg

Bone Loss

  • Bone Loss

  • Fracture Risk

  • Stone Risk

Adapted from Heaney et al, 2000

Potential countermeasures l.jpg

Potential Countermeasures

  • Nutrition

  • Exercise

  • Pharmacology

Biochemical markers of bone breakdown l.jpg

Biochemical Markers of Bone Breakdown

  • N-telopeptide

  • Helical peptide

Sodium l.jpg


NTX (nmol/d)

Level of dietary sodium at each stage of the study

Experiment days

Slide25 l.jpg

European Mir Mission (Days)

Omega 3 fatty acids l.jpg

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 l.jpg

Omega-3 Fatty Acids

  • Clinical trial with cancer cachexia patients

(Wigmore et al. 1996)

Animal protein potassium l.jpg

Animal protein/Potassium

Chicken bone in acid l.jpg

Chicken Bone in Acid

  • In the classroom, use the “famous” chicken bone in acid lab experiment to demonstrate acid effects on bones

  • See: Experiment.pdf

  • ….plus, ideas for more on nutrition and bones!

Next stop mars l.jpg

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 l.jpg

Food System Issues

  • Nutrient content

  • Palatability

  • Shelf-life

  • Preparation

  • Storage

  • Trash

How will extreme conditions of space affect food supply l.jpg

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 l.jpg

For Example…

Vitamin B1 (thiamine)

  • Easily destroyed by heat and light

  • Deficiency

    • beriberi

    • develops within 2-3 months

    • neurological and cardiovascular effects

Another example l.jpg

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 l.jpg

    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 l.jpg

    Related NASA Education Material

    • National Space and Biomedical Research Institute

    • Activities Guides for Teachers

    • 5-8 grade

    Related nasa education material37 l.jpg

    Related NASA Education Material


    • Math & Science integration

    • “Better Health from Space to Earth”

    • Grades 5-8

    Slide38 l.jpg

    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

  • Login