Dietary Reference Intakes The Essential Guide to Nutrient Requirements (2006) / Chapter Skim
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TABLE 1 Dietary Reference Intakes for Choline by Life Stage Group DRI values (mg/day) AIa,b ULc males females Life stage group NDd 0 through 6 mo 125 125 7 through 12 mo 150 150 ND 1 through 3 y 200 200 1,000 4 through 8 y 250 250 1,000 9 through 13 y 375 375 2,000 14 through 18 y 550 400 3,000 19 through 30 y 550 425 3,500 31 through 50 y 550 425 3,500 51 through 70 y 550 425 3,500 > 70 y 550 425 3,500 Pregnancy £ 18 y 450 3,000 19 through 50 y 450 3,500 Lactation £ 18 y 550 3,000 19 through 50 y 550 3,500 a AI = Adequate Intake.
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From page 219... ...
PART III: CHOLINE 219 CHOLINE C holine is required for the structural integrity of cell membranes. It is also involved in methyl metabolism, cholinergic neurotransmission, transmembrane signaling, and lipid and cholesterol transport and metabolism.
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From page 220... ...
DRIs: THE ESSENTIAL GUIDE TO NUTRIENT REQUIREMENTS 220 rich in phosphatidylcholine. The term lecithin is often interchangeably used with phosphatidylcholine.
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PART III: CHOLINE 221 Pregnancy £ 18 y through 50 y Age-specific + fetal and placental accumulation of choline Lactation £ 18 y through 50 y Age-specific + choline secreted in human milk 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 222... ...
DRIs: THE ESSENTIAL GUIDE TO NUTRIENT REQUIREMENTS 222 Bioavailability This information was not provided at the time the DRI values for this nutrient were set. Dietary Interactions Choline, methionine, and folate metabolism interact at the point that homocys teine is converted into methionine.
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From page 223... ...
PART III: CHOLINE 223 KEY POINTS FOR CHOLINE Choline is required for the structural integrity of cell 3 membranes. It is also involved in methyl metabolism, cholinergic neurotransmission, transmembrane signaling, and lipid and cholesterol transport and metabolism.
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