نتایج جستجو برای: vitamin d supplementation
تعداد نتایج: 678211 فیلتر نتایج به سال:
BACKGROUND Dietary vitamin D supplementation is associated with reduced risk of type 1 diabetes in animals. Our aim was to ascertain whether or not vitamin D supplementation or deficiency in infancy could affect development of type 1 diabetes. METHODS A birth-cohort study was done, in which all pregnant women (n=12055) in Oulu and Lapland, northern Finland, who were due to give birth in 1966 ...
BACKGROUND Low serum 25-hydroxyvitamin D (25-[OH]D) levels have been associated with lower FEV(1), impaired immunologic control, and increased airway inflammation. Because many patients with chronic obstructive pulmonary disease (COPD) have vitamin D deficiency, effects of vitamin D supplementation may extend beyond preventing osteoporosis. OBJECTIVE To explore whether supplementation with hi...
BACKGROUND Vitamin D supplementation is recommended to maintain bone health in the general population and in particular in patients with chronic kidney disease (CKD). While the nutritional status of vitamin D is assessed by circulating levels of 25 (OH) D3, it is not routinely measured to ensure the adequacy of vitamin D supplementation. Current recommendations require the maintenance of serum ...
INTRODUCTION Vitamin D and the antioxidant quercetin, are promising agents for improving physical performance because of their possible beneficial effects on muscular strength and cardiorespiratory fitness. PURPOSE The purpose of this study was to determine the effects of increased intakes of vitamin D, quercetin, and their combination on antioxidant status, the steroid hormone regulators of ...
BACKGROUND Vitamin D supplementation has been proposed to improve clinical symptoms during respiratory tract infections (RTIs), but results from randomized, placebo-controlled trials (RCT) are inconclusive. Previously, we performed an RCT in patients with various immune-disorders and observed that supplementation with 4000 IU vitamin D/day during 12 months significantly reduced antibiotic consu...
The relationship between calcium and cardiovascular diseases (CVD) has been explored for a long time. Studies exploring the effect of calcium intake or calcium supplementation on cardiovascular risk suggest that systolic blood pressure increases under low calcium intake and decreases with calcium supplementation. A lower calcium intake has been associated with an increased risk of stroke. Howev...
BACKGROUND AND OBJECTIVES Vitamin D deficiency is endemic in children with CKD. We sought to investigate the association of genetic disposition, environmental factors, vitamin D supplementation, and renal function on vitamin D status in children with CKD. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Serum 25-hydroxy-vitamin D, 1,25-dihydroxy-vitamin D, and 24,25-dihydroxy-vitamin D concentra...
Background: This study was designed to determine the effects of calcium-vitamin D supplementation on insulin resistance, inflammatory factor and biomarkers of oxidative stress among healthy pregnant women and pregnancy outcomes. Methods: This randomized double-blind controlled clinical trial was performed among 42 p regnant women, aged 18-40 year old who were carrying singleton pregnancy at...
Vitamin D status of exclusively breastfed 4-month-old infants supplemented during different seasons.
OBJECTIVE To examine the vitamin D status of 4-month-old exclusively breastfed infants supplemented with 400 IU daily of vitamin D and to determine whether there was any seasonal variation in serum 25-hydroxyvitamin D (25(OH)D) levels of infants. METHODS In this cross-sectional study, serum calcium, phosphorus, alkaline phosphatase, parathyroid hormone, and 25(OH)D levels of 143 exclusively b...
Recent evidence supports an association between vitamin D deficiency and hypertension, peripheral vascular disease, diabetes mellitus, metabolic syndrome, coronary artery disease, and heart failure. The effect of vitamin D supplementation, however, has not been well studied. We examined the associations between vitamin D deficiency, vitamin D supplementation, and patient outcomes in a large coh...
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