No vitamin D threshold for calcium absorption: why does this matter?
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چکیده
منابع مشابه
No vitamin D threshold for calcium absorption: why does this matter?
It has long been known that 1,25-dihydroxyvitamin D stimulates calcium absorption and that there is a correlation between serum 25-hydroxyvitamin D [25(OH)D] and calcium absorption at low serum concentrations when transcellular processes are more important (1). Calcium absorption has been used as one of several measures to determine vitamin D intake requirements or sufficiency (2). Previously, ...
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BACKGROUND The maximal calcium absorption in response to vitamin D has been proposed as a biomarker for vitamin D sufficiency. OBJECTIVE The objective was to determine whether there is a threshold beyond which increasing doses of vitamin D, or concentrations of serum 25-hydroxyvitamin D [25(OH)D], no longer increase calcium absorption. DESIGN This was a placebo-controlled, dose-response, ra...
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ژورنال
عنوان ژورنال: The American Journal of Clinical Nutrition
سال: 2014
ISSN: 0002-9165,1938-3207
DOI: 10.3945/ajcn.113.082644