Nutrition

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Author:
rwilliams144
ID:
177314
Filename:
Nutrition
Updated:
2012-10-13 11:53:25
Tags:
Vitamins Minerals
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Description:
Nutrition Unit 2
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  1. what are fat soluble vitamins
    • A
    • D
    • E
    • K
  2. What are the water soluble vitamins
    • B Complex
    • C
  3. charateristics of fat souluble vitamins
    • fat or oily part of foods
    • insoluble in water
    • absorption enchaced by fat
    • require bile
    • absorbed into lymph
    • stored in liver or adipose tissue
    • needed in periodic doeses
    • more likey to be toxic
  4. characteristics of water soluble vitamins
    • absorbed into blood
    • excreted by the kidneys
    • needed in frequent small doses
    • less likely to be toxic
    • more likely to be destroyed by air, light, nad heat. 
  5. Vitamin A
    • Retinol- fully performed vit A
    • beta carotene- precurser or pro vitamin. converted to active form of vitamin in the body
    • converted to vit A in the liver
    • pigment in yellow and green plants
    • ornages
    • antiozidant funtion
  6. Vit A food Souces
    • Animal sources
    • butter, cream-- milk fat
    • egg yolk
    • liver

    • Beta Carotene
    • Green Leafy veggies
    • spinach
    • broccoli
    • greens
    • Yellow or oranges veggies and fruits
    • Carrots 
    • Sweet Potatoes
    • Apricots
    • Cantalope
  7. Functions of Vit A
    • Vision
    • Tissue strength- maintence of
    • epithelial cells, mucous membranes, cell membranes- antioxidant funtion
    • Bone growth
    • Immune function. 
  8. Vit A deficiencies
    • night blindness- nyctalopia
    • xerophthalmia- dry cornea, blindness- major cauase of world blindness
    • increased risk of infection
    • keratinzed skin- rough and dry
    • dry mucous membranes
    • malabsorption
    • contributes to iron def
  9. Vit A toxicity
    • liver damage
    • hypercalcemia and osteoporosis
    • cheilosis
  10. Accutane!
    • is linked to birth defects!
    • miracle drug for acne
    • contains performed Vit A
  11. Stability Vit A
    • unstable to heat
    • unstable to air
    • cook quickly with small amt of water and cover
    • destroyed in rancid and wilted veggies
  12. Vit D
    • sunlight vit!
    • sunlight converts percursor in the skin to active form
  13. Vit D food sources
    • Fortified milk and dairy products
    • enriched cereals and grains
    • liver
    • eggs
    • fatty fish- cod liver oil- 1tsp provides 100% DRI for Vit D and A
  14. Vit D functions
    • absorption of calcium and phosphorous
    • promotes bone and teeth mineralization
    • tumor suppressant- may help prevent certain cancers
    • help regulate BP
    • may reduce the risk of certain auto immune diseases
    • helps with SAD- seasonal affective disorder
  15. Def of Vit D
    • bone pain and loss
    • children- rickets
    • adults- osteomalacia
  16. who is at risk for def?
    • eldery- ability of body to produce vit impaired
    • elderly in long term care
    • children- dec time outside, reduced intake of milk
    • people with limited sun exposure
  17. DRA for Vit D
    • 800 IU
    • 1mcg of vit D= 40 IU in the diet
    • 1-13 yrs- 600 IU 15mcg
  18. Vit E- tocpherol
    Food sources
    • veggies oils
    • nuts- 1/4 cup almonds supplies 100% DRI
    • widely distributed in foods
  19. Vit E functions
    • antioxidants
    • prevents cell damage
    • protects red blood celss
    • works with selenium
  20. NON functins of Vit E
    • does not cure infertility
    • does not enhance sexual performance
  21. Def of Vit E
    • supplements not advised
    • breakdown of red blood cells- hemolytic anemia
    • neurological symptoms

    • toxicity
    • rare
    • inhibits clotting action of vit k. risk if taking coumadin
  22. Vit K- phylloquinone Sources
    •  green leafy veggies
    • synthesized from bacteria in the bowel
  23. Vit K- phylloquinone function
    • blood clotting
    • necessary for the formation of prothrombim- clotting factor
    • people taking coumadin-blood thinner- need to maintain consistent levels of vit K
    • bone development
  24. Vit K stability
    • sensitive to light
    • meicinal form stored in brown bottle
  25. Vit C- Asorbic acid
    Food Sources
    • strawberry
    • watermelon
  26. functions of Vit C
    • tissue building- intracellular cement
    • teeth, bones, carilage
    • connective tissue, collagen
    • cell membranes and vessel walls
    • wound healing
    • metabolism- increases absorption of iron
    • antioxidant- protects cell membranes

    decreased risk of CVD, Cancer, Neurodegenerative disease
  27. Vit C Def
    • Scurvy
    • brusing, internal bleeding, rupture of small blood vessels
    • bleeding gums
    • loose teeth
    • arthalgias- generalized pain
  28. requirements of Vit C
    • 90-100 mg/day 6oz OJ
    • 200-400 max safe amt
    • increased requirement for:
    • smokers, pregnant, lactating mothers, wound healing
  29. Toxicity of Vit C
    • doses over 500 mg are largely excreted
    • mega doses can lead to:
    • renal stones, diarrhea, sickle cell crisis, blood dyscrasias, rebound scurvy after supp is stopped. 
    • chewable tabs destructive to teeth
  30. Vit B1 Thiamin

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