Dietary reference intakes for vitamin D: justification for a review of the 1997 valuesElizabeth A Yetley
Office of Dietary Supplements, National Institutes of Health, 6100 Executive Boulevard, Room 3B01, Bethesda, MD 20892 7517, USA
Am J Clin Nutr 89:719-27. 2009
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Assessing the vitamin D status of the US populationElizabeth A Yetley
Office of Dietary Supplements, National Institutes of Health, Bethesda, MD, USA
Am J Clin Nutr 88:558S-564S. 2008
..Finally, non-Hispanic whites tend to have higher vitamin D status than do non-Hispanic blacks and Mexican Americans...
- NHANES monitoring of serum 25-hydroxyvitamin D: a roundtable summary
Elizabeth A Yetley
Office of Dietary Supplements, National Institutes of Health, Bethesda, MD 20892, USA
J Nutr 140:2030S-45S. 2010
..The experts noted the preliminary nature of the evidence of the 3-epi-25(OH)D3 but felt that it should be measured in 2007 NHANES and later...
- Biomarkers of folate status in NHANES: a roundtable summary
Elizabeth A Yetley
Office of Dietary Supplements, National Institutes of Health, Bethesda, MD 20892, USA
Am J Clin Nutr 94:303S-312S. 2011
..They noted the need for a commutability study for the available reference materials for serum 5MTHF and FA...
- Overview of a roundtable on NHANES monitoring of biomarkers of folate and vitamin B-12 status: measurement procedure issues
Elizabeth A Yetley
Office of Dietary Supplements, National Institutes of Health, Bethesda, MD 20892 7517, USA
Am J Clin Nutr 94:297S-302S. 2011
..The roundtable supported the continued use of the National Institute of Standards and Technology (NIST) reference materials in NHANES biomarker analyses and the further development of additional reference materials by the NIST...
- Folate and vitamin B-12 biomarkers in NHANES: history of their measurement and use
Elizabeth A Yetley
Office of Dietary Supplements, National Institutes of Health, Bethesda, MD 20892, USA
Am J Clin Nutr 94:322S-331S. 2011
..This review summarizes the history and use of folate- and vitamin B-12-related biomarkers beginning with NHANES I (1974-1975) through 2010...
- Biomarkers of vitamin B-12 status in NHANES: a roundtable summary
Elizabeth A Yetley
Office of Dietary Supplements, National Institutes of Health, Bethesda, MD 20892 7517, USA
Am J Clin Nutr 94:313S-321S. 2011
..Reliable measurement procedures are available, and National Institute of Standards and Technology reference materials are available or in development for serum vitamin B-12 and MMA...
Monitoring folate status in population-based surveysElizabeth A Yetley
Office of Dietary Supplements, National Institutes of Health, Bethesda, MD, USA
Biofactors 37:285-9. 2011
..2011 International Union of Biochemistry and Molecular Biology, Inc. 2011...
- Unmetabolized serum folic acid and its relation to folic acid intake from diet and supplements in a nationally representative sample of adults aged > or =60 y in the United States
Regan L Bailey
Office of Dietary Supplements, National Institutes of Health, Bethesda, MD, USA
Am J Clin Nutr 92:383-9. 2010
..Unmetabolized serum folic acid (UMFA) has been detected in adults. Previous research indicates that high folic acid intakes may be associated with risk of cancer...
- Total folate and folic acid intake from foods and dietary supplements in the United States: 2003-2006
Regan L Bailey
Office of Dietary Supplements and the National Cancer Institute, National Institutes of Health, Bethesda, MD 20892 7517, USA
Am J Clin Nutr 91:231-7. 2010
..Previous monitoring efforts did not include folic acid from dietary supplements and are therefore not complete...
- Monitoring of vitamin B-12 nutritional status in the United States by using plasma methylmalonic acid and serum vitamin B-12
Regan L Bailey
Office of Dietary Supplements, National Institutes of Health, Bethesda, MD 20892 7517, USA
Am J Clin Nutr 94:552-61. 2011
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- Summary of roundtable discussion on vitamin D research needs
Patsy M Brannon
Office of Dietary Supplements, National Institutes of Health, US Department of Health and Human Services, Bethesda, MD, USA
Am J Clin Nutr 88:587S-592S. 2008
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- Overview of the conference "Vitamin D and Health in the 21st Century: an Update"
Patsy M Brannon
Office of Dietary Supplements, National Institutes of Health, US Department of Health and Human Services, Bethesda, MD, USA
Am J Clin Nutr 88:483S-490S. 2008
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- Appropriateness of the probability approach with a nutrient status biomarker to assess population inadequacy: a study using vitamin D
Christine L Taylor
Office of Dietary Supplements, NIH, Bethesda, MD, and the Department of Statistics, Iowa State University, Ames, IA
Am J Clin Nutr 97:72-8. 2013
..There are questions about the appropriate method for the accurate estimation of the population prevalence of nutrient inadequacy on the basis of a biomarker of nutrient status (BNS)...
- Nutrient risk assessment as a tool for providing scientific assessments to regulators
Christine L Taylor
Institute of Medicine, The National Academies, Washington, DC 20001 and 5Office of Dietary Supplements, NIH, Bethesda, MD 20892, USA
J Nutr 138:1987S-1991S. 2008
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- Science in the regulatory setting: a challenging but incompatible mix?
Elizabeth A Yetley
Office of Dietary Supplements, National Institutes of Health, 6100 Executive Blvd, Rm 3B01, MSC 7517, Bethesda, MD 20892 7517, USA
Novartis Found Symp 282:59-68; discussion 69-76, 212-8. 2007
..The underlying assumption is that scientists who have a basic understanding of the interface between science and policy decisions can more effectively provide scientific input into these decisions...
- Dietary supplement use among infants, children, and adolescents in the United States, 1999-2002
Mary Frances Picciano
Office of Dietary Supplements, National Institutes of Health, 6100 Executive Blvd, 3B01, Bethesda, MD 20892 7517, USA
Arch Pediatr Adolesc Med 161:978-85. 2007
..To describe dietary supplement use among US children...
- Multivitamin and multimineral dietary supplements: definitions, characterization, bioavailability, and drug interactions
Elizabeth A Yetley
Office of Dietary Supplements, National Institutes of Health, Bethesda, MD 20892 7517, USA
Am J Clin Nutr 85:269S-276S. 2007
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- Measuring vitamins and minerals in dietary supplements for nutrition studies in the USA
Johanna T Dwyer
Office of Dietary Supplements, National Institutes of Health, US Department of Health and Human Services, Bethesda, MD 20892, USA
Anal Bioanal Chem 389:37-46. 2007
..The DSID should be helpful to researchers in assessing relationships between intakes of vitamins and minerals and health outcomes...
- Trends in blood folate and vitamin B-12 concentrations in the United States, 1988 2004
Christine M Pfeiffer
National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA
Am J Clin Nutr 86:718-27. 2007
..Monitoring the folate status of US population groups over time has been a public health priority for the past 2 decades, and the focus has been enhanced since the implementation of a folic acid fortification program in the mid-1990s...
- A collaborative effort to apply the evidence-based review process to the field of nutrition: challenges, benefits, and lessons learned
Ethan M Balk
Tufts New England Medical Center Evidence based Practice Center, Institute for Clinical Research and Health Policy Studies, Tufts New England Medical Center, Boston, MA 02111, USA
Am J Clin Nutr 85:1448-56. 2007
..The goals of these systematic reviews, the processes that were used, the benefits and limitations of the collaboration, and the conclusions of the reviews, including recommendations for future research, are summarized here...
- Trends in circulating concentrations of total homocysteine among US adolescents and adults: findings from the 1991-1994 and 1999-2004 National Health and Nutrition Examination Surveys
Christine M Pfeiffer
National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA
Clin Chem 54:801-13. 2008
..Such an analysis of these data could supplement current knowledge regarding whether the US folic acid fortification program has modified national plasma tHcy concentrations...
- Modeling the level of fortification and post-fortification assessments: U.S. experience
Elizabeth A Yetley
Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, MD 20740, USA
Nutr Rev 62:S50-9; discussion S60-1. 2004
..S. Much about the long-term effects of the fortification program remains unknown and careful monitoring over time will be necessary to ensure that the program functions as intended...
- Nationwide folate fortification has complex ramifications and requires careful monitoring over time
Jeanne I Rader
Arch Intern Med 162:608-9. 2002
