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تعداد نتایج: 126685 فیلتر نتایج به سال:
BACKGROUND Increased awareness of the wide spectrum of activity of vitamin D has focused interest on its role in the health of Canada's Aboriginal peoples, who bear a high burden of both infectious and chronic disease. Cutaneous vitamin D synthesis is limited at northern latitudes, and the transition from nutrient-dense traditional to nutrient-poor market foods has left many Canadian Aboriginal...
PURPOSE Even mild iodine deficiency may negatively affect cognitive performance, especially at a young age. Our aim was to investigate iodine status in very young children and to assess the importance of iodized salt in processed foods of which the use has decreased during the last years in Germany. METHODS Twenty-four hours urinary iodine excretion (UIE) as a marker of iodine intake was meas...
OBJECTIVES (1). To determine the reliability and validity of a food-frequency questionnaire (FFQ) for use in epidemiological research in postmenopausal women; and (2). to compare the volume estimation (VE) and weight estimation (WE) method of administration of this questionnaire. DESIGN An initial list of foods was derived and modified after pre-testing in 22 subjects. Test-retest reliability...
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