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Front Matter (R1-R24)

Summary (1-16)

1 Introduction to Dietary Reference Intakes (17-26)

2 The B Vitamins and Choline: Overview and Methods (27-40)

3 A Model for the Development of Tolerable Upper Intake Levels (41-57)

4 Thiamin (58-86)

5 Riboflavin (87-122)

6 Niacin (123-149)

7 Vitamin B6 (150-195)

8 Folate (196-305)

9 Vitamin B12 (306-356)

10 Pantothenic Acid (357-373)

11 Biotin (374-389)

12 Choline (390-422)

13 Uses of Dietary Reference Intakes (423-436)

14 A Research Agenda (437-442)

A Origin and Framework of the Development of Dietary Reference Intakes (443-447)

B Acknowledgments (448-450)

C Système International d'Unités (451-452)

D Search Strategies (453-455)

E Methodological Problems Associated with Laboratory Values and Food Composition Data for B Vitamins (456-459)

F Dietary Intake Data from the Boston Nutritional Status Survey, 1981–1984 (460-465)

G Dietary Intake Data from the Continuing Survey of Food Intakes by Individuals (CSFII), 1994–1995 (466-477)

H Dietary Intake Data from the Third National Health and Nutrition Examination Survey (NHANES III), 1988–1994 (478-501)

I Daily Intakes of B Vitamins by Canadian Men and Women, 1990, 1993 (502-506)

J Options for Dealing with Uncertainties in Developing Tolerable Upper Intake Levels (507-511)

K Blood Concentrations of Folate and Vitamin B12 from the Third National Health and Nutrition Examination Survey (NHANES III), 1988–1994 (512-519)

L Methylenetetrahydrofolate Reductase (520-522)

M Evidence from Animal Studies on the Etiology of Neural Tube Defects (523-526)

N Estimation of the Period Covered by Vitamin B12 Stores (527-530)

O Biographical Sketches (531-536)

P Glossary and Abbreviations (537-540)

Index (541-567)