Bioavailability of Vitamins and Minerals

Bioavailability of Vitamins and Minerals - 02/27/08...

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02/27/08 Bioavailability of Vitamins and Minerals I. Bioavailability Definition - The degree to which the amount of an ingested nutrient is absorbed and available to the body - The amount of a vitamin or mineral a person absorbs will depend upon several factors Conditions of the person Conditions of the vitamin or mineral itself, or Combination of both person and nutrient Factors That Affect Bioavailability - Personal factors Their needs Their ability to absorb nutrients The amount available to them in the diet The amount stored in the body The health age Physiological state of person Other components of the diet II. Absorption of Nutrients Needs and Ability - Higher absorption occurs among individuals who have greater need and/or are deficient in a mineral Children, adolescents, pregnant/lactating women have greater needs due to growth - Ability to absorb nutrients
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Pregnant/lactating women absorb more than non-pregnant women Children absorb better than elderly Elderly: body is deteriorating o Decreased gastric acid (do not absorb as well) Bioavailability of Acid Dependent Minerals - Some acid-dependent minerals that require adequate stomach acid to enhance absorption
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This note was uploaded on 03/30/2008 for the course NUSC 160 taught by Professor Sui-caldera during the Spring '08 term at UConn.

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Bioavailability of Vitamins and Minerals - 02/27/08...

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