1.4 Fibers

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efrain12
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295261
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1.4 Fibers
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2015-02-08 14:45:32
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Fibers
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  1. Do know the physiological differences between soluble and insoluble fiber ) Soluble fiber (3)
    -delay gastric emptying

    -increase GI transit time

    - decrease nutrient absorption
  2. Do know the physiological differences between soluble and insoluble fiber ) what are some example of soluble fiber?
    Legumes, oats, barley, berries, bananas
  3. Do know the physiological differences between soluble and insoluble fiber ) Insoluble fiber (2)
    - decrease GI transit time

    -increase intestinal bulk
  4. Do know the physiological differences between soluble and insoluble fiber ) Insoluble fiber sources
    Whole grain, nuts, veggies, fruits
  5. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) Capacity for viscosity (2)
    • -ability of fiber to bind water
    • *spoinge

    -soluble fibers can bind several times their weight
  6. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) Water absorbing fibers...(4)
    -delay gastric emptying

    -reduce enzyme function

    -slow nutrition absorption  thus lower B.G

    -slow small intestine transit time
  7. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) water absorbing fibers: delay gastric emptying
    Feel full
  8. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) water absorbing fibers: reduce enzyme function
    Gelatin traps nutrients so enzymes can't access food
  9. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) water absorbing fibers: slow nutrition absorption, lower BG levels
    Increases viscosity of mucus by coating on intestines
  10. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) water absorbing fibers: slow small intestine transit time
    Speeding or slowing of transit time by insoluble or soluble may lead to displacement of nutrients form their sites of optimal absorption and decreases time for absorption
  11. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) adsorption/binding ability :
    Some fibers have the ability to bind with other substances preventing their absorption
  12. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) adsorption/binding ability : leads to (4)
    -diminished absorption of lipids

    -increased fecal bile acid excretion

    -lower serum cholesterol

    -altered mineral, carotenoid, and phytoestrogen absorption
  13. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) adsorption/binding ability : Diminished absorption of lipids
    Fibers interact with F.A & cholesterol inhibiting Micelle formation & absorption
  14. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) adsorption/binding ability : increased fecal bile acid excretion
    Fibers bind with bile acids preventing reabsorption so when we poop we excrete bile that is trapped in fibers
  15. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) adsorption/binding ability : Lower Serum cholesterol
    Since fibers binds bile, and cholesterol is a large component of bile, when we poop bile is trapped in fiber thus it will be excreted thus removing cholesterol thus lowering cholesterol
  16. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) adsorption/binding ability : altered mineral, carotenoid, and phytoestrogen abosprtion (2)
    -hemicellulose , pectin, and gums may inhibit mineral absorption

    - pectin and gums may inhibit carotenoid and photochemical absorption
  17. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc) production of short chain F.A benefits (8)
    -increase h2O and Na absorption in colon

    • -mucosal cell differentiation
    • *anti-canceer

    • -acidification of lumen
    • *protective against colon cancer

    • -energy for colonocytes
    • *use 95% of short chain

    -inhibit cholesterol synthesis in the liver

    -improve caloric blood flow

    -boosts local immune function through white blood cell recruitment and probiotic proliferation

    -reduces mucosal atrophy
  18. Know the different properties that fibers may possess and what they mean concerning the absorption of nutrients, bile excretion, toxin removal Etc)  Insoluble fibers adsorb hydrophobic carcinogens
  19. Be able to discuss what is known concerning the relationship between fiber intake and CVD, DM, diverticular disease, and colon cancer) Fiber and CVD (3)
    -whole grain based CHO protective against heart disease

    -increased fiber intake usually associated with lower blood pressure

    • -moderate inverse relationship between fiber intake and CVD
    • *more fiber less CVD
  20. Be able to discuss what is known concerning the relationship between fiber intake and CVD, DM, diverticular disease, and colon cancer) Fiber and DDM
    Soluble fiber has been shown to improve glycemic control in DM patients
  21. Be able to discuss what is known concerning the relationship between fiber intake and CVD, DM, diverticular disease, and colon cancer) Fiber and DM: how does it help (3)
    -reducing rate of glucose absorption

    -reduced insulin secretion

    -improved insulin sensitivity
  22. Be able to discuss what is known concerning the relationship between fiber intake and CVD, DM, diverticular disease, and colon cancer) Fiber and Diverticular disease (2)
    • Diverticular frequently becomes infected through trapped matter which leads to nauseous poison to be released into the system
    • *high fiber diets have been shown to protect against this
  23. Be able to discuss what is known concerning the relationship between fiber intake and CVD, DM, diverticular disease, and colon cancer) Fiber and Colon Cancer (4)
    -bile has potential to become carcinogenic. But since fiber binds to bile and eliminates it, it lower intestinal pH which inhibits conversion of bile to carcinogenic products

    -fecal bulk moves dietary carcinogens through faster & decreases toxin synthesis time

    -cancer cells grow well in low calcium environment. Fiber fermentation releases the calcium bound to fiber into caloric environment

    -short chain F.A may slow growth & development of cancer cells
  24. 3 ways to get enough soluble & insoluble fiber
    -plenty of fiber rich legumes

    -at least 4.5 cups of fruits & veggies per day

    -at least 3 OZ whole grains per day
  25. Men 19-50, how may grams?
    38 grams per day
  26. Women 19-50, how many grams?
    25 grams

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