The calcium and vitamin D dilemma: To D or not to D?
نویسندگان
چکیده
منابع مشابه
Firms ’ R & D Dilemma : to Undertake or Not to Undertake R & D
It is well known that in most industries a significant proportion of firms do not perform innovative activities. Although empirical studies on the determinants of R&D often have taken this fact into account by considering the dependent variable as a censured one, there is not an explicit theoretical model to explain the zeros. The concern of this letter is to discuss a simple theoretical model ...
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Vitamin D deficiency is associated with fractures. This relationship is biologically plausible. The results of 19 randomized clinical trials with vitamin D with or without calcium show varying results: a decreased fracture incidence in 7, neutral in 10 trials, whereas 2 trials with a high dose of vitamin D once per year showed an increased fracture incidence. In three out of four well-powered t...
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M e t h o d s Data sources: 10 databases, lists of conference abstracts, bibliographies of relevant studies, and contact with researchers in the field. Study selection and assessment: Randomized and quasi-randomized controlled trials (RCTs) that compared vitamin D or a vitamin D analogue (alone or in combination with calcium) with placebo, no intervention, or calcium alone in postmenopausal wom...
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Vitamin D comprises a group of fat-soluble pro-hormones, obtained from sun exposure, food, and supplements, and it must undergo two hydroxylation reactions to be activated in the body. Several studies have shown the role of vitamin D in mineral metabolism regulation, especially calcium, phosphorus, and bone metabolism. Some factors such as inadequate vitamin intake and liver or kidney disorders...
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ژورنال
عنوان ژورنال: Medical Journal Armed Forces India
سال: 2015
ISSN: 0377-1237
DOI: 10.1016/j.mjafi.2015.09.011