Nutritional Requirements

Publication Title: 
The American Journal of Clinical Nutrition

BACKGROUND: For many pregnant Canadian women, usual iron intakes from food appear to be inadequate compared with Dietary Reference Intake requirement estimates. OBJECTIVE: Dietary intake modeling was undertaken to determine an amount of iron supplementation that would confer acceptably low prevalence of apparently inadequate and apparently excessive intakes. DESIGN: The distribution of usual dietary iron intakes was estimated with the use of 24-h recalls from pregnant women aged 19-50 y in the Canadian Community Health Survey, Cycle 2.2.

Author(s): 
Cockell, Kevin A.
Miller, Doris C.
Lowell, Hélène
Publication Title: 
The Journal of Nutrition

Low circulating pyridoxal 5'-phosphate (PLP) concentrations have been linked to inflammatory markers and the occurrence of inflammatory diseases. However, the implications of these findings are unclear. The measurement of PLP and C-reactive protein (CRP) in blood samples collected from participants in the 2003-2004 NHANES afforded us the opportunity to investigate this relationship in the general U.S. population. Dietary and laboratory data were available for 3864 of 5041 interviewed adults, 2686 of whom were eligible (i.e.

Author(s): 
Morris, Martha Savaria
Sakakeeny, Lydia
Jacques, Paul F.
Picciano, Mary Frances
Selhub, Jacob
Publication Title: 
The Journal of Nutrition

Population level data on how older individuals living at high latitudes achieve optimal vitamin D status are not fully explored. Our objective was to examine the intake of vitamin D among healthy older individuals with 25-hydroxyvitamin D [25(OH)D] concentrations > or =75 nmol/L and to describe current sources of dietary vitamin D. We conducted a population-based, cross-sectional study of 404 healthy men and women aged 69 to 83 y randomly selected from the NuAge longitudinal study in Québec, Canada. Dietary intakes were assessed by 6 24-h recalls.

Author(s): 
Baraké, Roula
Weiler, Hope
Payette, Hélène
Gray-Donald, Katherine
Publication Title: 
The Journal of Nutrition

Our objective in this study was to estimate calcium intakes from food, water, dietary supplements, and antacids for U.S. citizens aged >or=1 y using NHANES 2003-2006 data and the Dietary Reference Intake panel age groupings. Similar estimates were calculated for vitamin D intake from food and dietary supplements using NHANES 2005-2006. Diet was assessed with 2 24-h recalls; dietary supplement and antacid use were determined by questionnaire. The National Cancer Institute method was used to estimate usual nutrient intake from dietary sources.

Author(s): 
Bailey, Regan L.
Dodd, Kevin W.
Goldman, Joseph A.
Gahche, Jaime J.
Dwyer, Johanna T.
Moshfegh, Alanna J.
Sempos, Christopher T.
Picciano, Mary Frances
Publication Title: 
Journal of Animal Science

Phosphorus is an expensive nutrient to supplement, and excess may lead to manure P challenges. Therefore, minimizing dietary P to meet requirements is important. Two experiments were conducted to determine the P requirement of finishing cattle (Exp. 1) and to evaluate the effects of feeding different P concentrations on the quantity and route of P excretion (Exp. 2). In Exp. 1, 60 heifers (BW = 278 kg +/- 17 kg) were individually fed 1 of 5 dietary P concentrations (0.10, 0.17, 0.24, 0.31, or 0.38% P).

Author(s): 
Geisert, B. G.
Erickson, G. E.
Klopfenstein, T. J.
Macken, C. N.
Luebbe, M. K.
MacDonald, J. C.
Publication Title: 
The American Journal of Clinical Nutrition

BACKGROUND: The intake of selenium needed for optimal health has not been established. Selenoproteins perform the functions of selenium, and the selenium intake needed for their full expression is not known. OBJECTIVE: This study sought to determine the intake of selenium required to optimize plasma selenoprotein P (SEPP1) and to compare SEPP1 with other plasma selenium biomarkers. DESIGN: A 40-wk placebo-controlled, double-blind study of selenium repletion was carried out in 98 healthy Chinese subjects who had a daily dietary selenium intake of 14 micro g.

Author(s): 
Xia, Yiming
Hill, Kristina E.
Li, Ping
Xu, Jiayuan
Zhou, Dingyou
Motley, Amy K.
Wang, Li
Byrne, Daniel W.
Burk, Raymond F.
Publication Title: 
Evidence Report/Technology Assessment

BACKGROUND: Since the 1997 Dietary Reference Intake (DRI) values for vitamin D and calcium were established new data have become available on their relationship, both individually and combined, to a wide range of health outcomes. The Institute of Medicine/Food and Nutrition Board has constituted a DRI committee to undertake a review of the evidence and potential revision of the current DRI values for these nutrients.

Author(s): 
Chung, Mei
Balk, Ethan M.
Brendel, Michael
Ip, Stanley
Lau, Joseph
Lee, Jounghee
Lichtenstein, Alice
Patel, Kamal
Raman, Gowri
Tatsioni, Athina
Terasawa, Teruhiko
Trikalinos, Thomas A.
Publication Title: 
Nutrients

The role of calcium in the prevention of bone loss in later life has been well established but little data exist on the adequacy of calcium intakes in elderly Australian women. The aim of this study was to compare the dietary intake including calcium of elderly Australian women with the Australian dietary recommendation, and to investigate the prevalence of calcium supplement use in this population. Community-dwelling women aged 70-80 years were randomly recruited using the Electoral Roll for a 2-year protein intervention study in Western Australia.

Author(s): 
Meng, Xingqiong
Kerr, Deborah A.
Zhu, Kun
Devine, Amanda
Solah, Vicky
Binns, Colin W.
Prince, Richard L.
Publication Title: 
Asia Pacific Journal of Clinical Nutrition

This study describes dietary supplement consumption practices among the Taiwanese population over the age of 65. Data for the analyses were derived from the 2005-2008 Nutrition and Health Survey in Taiwan. Data from a total of 914 participants (456 men and 458 women) was collected in the study to delineate patterns of supplement usage. The results indicated that the percentage of individuals taking supplements was 45.7% for men and 52.2% for women.

Author(s): 
Chen, Shih-Ying
Lin, Jia-Rong
Chen, Tzu-Hsiu
Guo, Shiou-Guei
Kao, Mei-Ding
Pan, Wen-Harn
Publication Title: 
The Journal of Nutrition

Population level data on how older individuals living at high latitudes achieve optimal vitamin D status are not fully explored. Our objective was to examine the intake of vitamin D among healthy older individuals with 25-hydroxyvitamin D [25(OH)D] concentrations > or =75 nmol/L and to describe current sources of dietary vitamin D. We conducted a population-based, cross-sectional study of 404 healthy men and women aged 69 to 83 y randomly selected from the NuAge longitudinal study in Québec, Canada. Dietary intakes were assessed by 6 24-h recalls.

Author(s): 
Baraké, Roula
Weiler, Hope
Payette, Hélène
Gray-Donald, Katherine

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