Dietary Reference Intakes The Essential Guide to Nutrient Requirements (2006) / Chapter Skim
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Pages 182-187
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From page 182... ...
TABLE 1 Dietary Reference Intakes for Vitamin B6 by Life Stage Group DRI values (mg/day) EARa RDAb AIc ULd males females males females Life stage group NDe 0 through 6 mo 0.1 7 through 12 mo 0.3 ND 1 through 3 y 0.4 0.4 0.5 0.5 30 4 through 8 y 0.5 0.5 0.6 0.6 40 9 through 13 y 0.8 0.8 1.0 1.0 60 14 through 18 y 1.1 1.0 1.3 1.2 80 19 through 30 y 1.1 1.1 1.3 1.3 100 31 through 50 y 1.1 1.1 1.3 1.3 100 51 through 70 y 1.4 1.3 1.7 1.5 100 > 70 y 1.4 1.3 1.7 1.5 100 Pregnancy £ 18 y 1.6 1.9 80 19 through 50 y 1.6 1.9 100 Lactation £ 18 y 1.7 2.0 80 19 through 50 y 1.7 2.0 100 a EAR = Estimated Average Requirement.
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From page 183... ...
PART III: VITAMIN B6 183 VITAMIN B6 V itamin B6 (pyridoxine and related compounds) functions as a coenzyme in the metabolism of amino acids, glycogen, and sphingoid bases.
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From page 184... ...
DRIs: THE ESSENTIAL GUIDE TO NUTRIENT REQUIREMENTS 184 cell. Transport occurs by nonsaturable passive diffusion.
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From page 185... ...
PART III: VITAMIN B6 185 water, and supplements and is based on sensory neuropathy as the critical adverse effect. The UL is not meant to apply to individuals who are receiving vitamin B6 under medical supervision.
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From page 186... ...
DRIs: THE ESSENTIAL GUIDE TO NUTRIENT REQUIREMENTS 186 INADEQUATE INTAKE AND DEFICIENCY In controlled studies, clinical signs and symptoms of vitamin B6 deficiency have only been observed during depletion with very low levels of the vitamin and have never been seen at intakes of 0.5 mg/day or more. The signs and symp toms of vitamin B6 deficiency include the following: • Seborrheic dermatitis • Microcytic anemia (from decreased hemoglobin synthesis)
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From page 187... ...
PART III: VITAMIN B6 187 KEY POINTS FOR VITAMIN B6 Vitamin B6 (pyridoxine and related compounds) functions as a 3 coenzyme in the metabolism of amino acids, glycogen, and sphingoid bases.
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