Normal rangesPTH is the most important factor which control calcium homeostasis in the body in this study we tried to determine the normal range of PTH and Vitamin D with examining the relation between PTH and bone density and Vitamin D on the base of bones biological changes. Our subjects ...
The main source of controversy is the different definitions of “deficiency,” according to Rosen, who says various organizations have used different cutoff points for normal vitamin D levels, with some so high that it over-estimates the number of Americans who are truly deficient. Vitamin D Defi...
No previous study has evaluated the associations of dairy products, lactose, calcium and vitamin D with the risk of ovarian cancer in African–American women, who are known to have high mortality from the disease, as well as to be at risk for calcium and vitamin D deficiency. Methods: We ...
In CTSC-Cog (Table2), we did not observe an effect of vitamin D3 supplementation on cognition at the end of follow-up (mean 2.0 years (range = 1.0–3.1 years)): the least squares mean for the global score was 0.11 (SE = 0.03) for the vitamin D3 group and 0.06 (SE ...
Vitamins are a heterogeneous group of organic substances that are present in our natural foods, that are of very high biological potency and that are required in extremely small concentrations for growth and maintenance of normal cells and body function. They need to be supplied in the diet, bec...
25-hydroxyvitamin D3 (25(OH)D3) is the inactive precursor of 1,25(OH)2D3and is considered the best parameter for evaluation of the vitamin D status of a subject. The normal range of serum 25(OH)D3concentrations is 25-170 nM [17]. The serum concentration of the active 1,25(OH)2D...
Findings In this secondary analysis of a randomized clinical trial with 25 871 patients, supplementation with vitamin D3 reduced the incidence of advanced (metastatic or fatal) cancer in the overall cohort, with strongest risk reduction in individuals with normal weight and no reduction among indiv...
It should be pointed out that zinc levels began and ended in the normal range. It is possible that increased zinc supplementation would normalize the slightly elevated copper levels. Chromium decreased to a normal level, but the change was not significant. Regarding the placebo group, there was ...
supplemented individuals (HR 0.87, 95% CI 0.79–0.96;P = 0.005). As the final serum concentration of 25OHD in the VITAL trial (~110 nmol/l) and the ViDA trial (~125 nmol/l or 50 ng/ml) were in the high normal range it is unlikely that higher doses would be more ...
Vitamin D deficiency is a candidate risk factor for osteoporosis, characterized by decreased bone mineral density (BMD). We performed this two-sample Mendelian randomization (MR) analysis to investigate the causal effect of vitamin D on BMD. We extracted 143 single-nucleotide polymorphisms from a re...