Dietary Reference Intakes The Essential Guide to Nutrient Requirements (2006) / Chapter Skim
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Pages 362-369
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From page 362... ...
TABLE 1 Dietary Reference Intakes for Phosphorus by Life Stage Group DRI values (mg /day) EARa RDAb AIc ULd males females males females Life stage group NDe 0 through 6 mo 100 7 through 12 mo 275 ND 1 through 3 y 380 380 460 460 3,000 4 through 8 y 405 405 500 500 3,000 9 through 13 y 1,055 1,055 1,250 1,250 4,000 14 through 18 y 1,055 1,055 1,250 1,250 4,000 19 through 30 y 580 580 700 700 4,000 31 through 50 y 580 580 700 700 4,000 51 through 70 y 580 580 700 700 4,000 > 70 y 580 580 700 700 3,000 Pregnancy £ 18 y 1,055 1,250 3,500 19 through 50 y 580 700 3,500 Lactation £ 18 y 1,055 1,250 4,000 19 through 50 y 580 700 4,000 a EAR = Estimated Average Requirement.
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From page 363... ...
PART III: PHOSPHORUS 363 PHOSPHORUS T he element phosphorus is found in nature (e.g., foods, water, and living tissues) primarily as phosphate (PO4)
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DRIs: THE ESSENTIAL GUIDE TO NUTRIENT REQUIREMENTS 364 The amount of phosphorus ingested does not appear to affect absorption efficiency, which suggests that this efficiency does not improve with low intakes (unlike calcium absorption)
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From page 365... ...
PART III: PHOSPHORUS 365 The UL The Tolerable Upper Intake Level (UL) is the highest level of daily nutrient intake that is likely to pose no risk of adverse effects for almost all people.
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From page 366... ...
DRIs: THE ESSENTIAL GUIDE TO NUTRIENT REQUIREMENTS 366 dosage was similar for men and women, with a median intake from supple ments of 120 mg/day. Bioavailability Most foods exhibit good phosphorus bioavailability.
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From page 367... ...
PART III: PHOSPHORUS 367 TABLE 2 Potential Interactions with Other Dietary Substances Substance Potential Interaction Notes SUBSTANCES THAT AFFECT PHOSPHORUS Calcium Pharmacological doses of Calcium in the normal adult intake range is not likely calcium carbonate may to pose a problem for phosphorus absorption. interfere with phosphorus absorption.
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From page 368... ...
DRIs: THE ESSENTIAL GUIDE TO NUTRIENT REQUIREMENTS 368 • Reduced calcium absorption (less problematic with adequate calcium intake) • Calcification of nonskeletal tissues, particularly the kidneys Concern about high phosphorus intake has been raised because of a probable population-level increase in phosphorus intake through colas and a few other soft drinks that contain phosphoric acid and processed foods containing phos phate additives.
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From page 369... ...
PART III: PHOSPHORUS 369 KEY POINTS FOR PHOSPHORUS The element phosphorus is found in nature primarily as 3 phosphate (PO4)
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