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Fat Soluble Vitamins

Fat Soluble Vitamins. http://barry-b.tripod.com/adhnutl7.html. Fat soluble Vitamins. Molecules that the body cannot make itself Dissolve in fat Must consume in/with fat Needed as take part both in metabloism and to act as hormones. Role of Fat Soluble Vitamins.

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Fat Soluble Vitamins

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  1. Fat Soluble Vitamins • http://barry-b.tripod.com/adhnutl7.html

  2. Fat soluble Vitamins Molecules that the body cannot make itself Dissolve in fat Must consume in/with fat Needed as take part both in metabloism and to act as hormones

  3. Role of Fat Soluble Vitamins These vitamins have a different role in metabolism than the Water Soluble Vitamins Need for roles like hormones eg Vit A, D Needed for involvement in physiological functions eg Vit E, K and A (in vision)

  4. Vitamin D Function Need to allow Calcium uptake stimulates production of Calcium Binding Proteins (CBP) this allows uptake of calcium from the gut , bone and urine

  5. Vitamin D has to be activated before it can work Vit D works together with Parathyroid Hormone (PTH) Too little Vit D causes extra PTH PTH is a vasoactive and Causes blood vessels to constrict and High blood pressure

  6. Deficiencies RicketsInfantsvery bad in china still • OsteomalaciaAdults • OsteoporosisOlder adults • hypertensionEffects every one • More in higher latitudes where less sun • More important than too much salt

  7. Source of Vitamin D Made in the Skin form Cholesterolneed UV light more deficiency in higher latitudes(Victoria. > Queensland)Vit. D3 made in skin (Called pro Vit D) Must be oxidised in Lung then Kidney to produce Active Vit. D ( DHCC)

  8. Excess dangers of food supplantation?

  9. Vitamin A (Retinol) Needed to form Visual purple in the retina of eye Hormonal action regulates cell differentiation Immune system Blood cells skin hair Embryonic development Cancer

  10. Deficiencies of Vitamin A Deficiency permanently blinds some 250,000 children a year. Infectious Childhood illnesses, contributing to 30% of the deaths of under 5 yo.s Vitamin A supplementation could prevent 1 to 3 million child deaths each year . Blindness linked with diarrhoea The lack of vitamin also results in diarrhoea and other infections. These repeated attacks of diarrhoea may bring about the final eye damage which destroys sight.==>Unable to absorb Vit A

  11. Sources of Vitamin A b - carotene(yellow Pigment in plants) Converts into Vit. A Liver, eggs, butter, margarines, fish oil Green and red vegetables

  12. Vitamin E Natural Anti-oxidant Stops production of Free Radicles Free radicles react with many compounds DNA - mutations Phosphlipids - membrane fracture Ageing

  13. Source of Vitamin E Wheat germ Unprocessed vegetable oils Nuts Green vegetables

  14. Vitamin K Need for blood clotting formation of prothrombin Sources: Fats and Oils Vegetables Intestinal bacteria

  15. The End

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