View clinical trials related to Vitamin D Insufficiency.
Filter by:This is a feasibility interventional study seeking to determine the safety and efficacy of the Solius Photobiologic System in increasing the serum levels of 25(OH)D in a vitamin D deficient/insufficient adult population.
The aim of this study is to evaluate the safety and effectiveness of the Solius Photobiological System in improving serum levels of 25-hydroxyvitamin D in vitamin D deficient/ insufficient adults of various skin types. The invetigators will conduct an double-blinded randomized clinical trial in 100 adults to compare the changes in serum 25-hydroxyvitamin D levels between subjects who received and do not receive weekly exposures to Ultraviolet B Radiation (UVB) generated by the Solius Photobiological System for 16 weeks.
This is a randomised, double-blind, double-dummy, multicentre, dose-ranging clinical trial in subjects with vitamin D deficiency or insufficiency. Its general objective is to determine the efficacy and safety of different doses of calcifediol soft gelatin capsules (SGCs) compared to placebo.
Pharmacokinetics and Safety Study of CTAP101 Capsules in Japanese and non-Japanese Healthy Subjects
An Open-Label, Repeated-Dose Safety, Efficacy, Pharmacokinetic and Pharmacodynamic Study of Oral CTAP101 Capsules, Immediate- Release (IR) Calcifediol, High-Dose Cholecalciferol, and Paricalcitol Plus Low-Dose Cholecalciferol in Patients with Secondary Hyperparathyroidism, Stage 3 or 4 Chronic Kidney Disease and Vitamin D Insufficiency
There continues to be debate as to how much vitamin D an adult requires to be vitamin D sufficient. A multitude of association studies have suggested that improving serum 25(OH)D >30 ng/mL may reduce risk of many chronic illnesses and improve immune function. The aim of this study is to define dynamic changes in PTH, broad gene expression in circulating immune cells, metabolomics, and microbiome profile in response to varying doses of vitamin D supplementation.
The purpose of this study is to investigate whether an association exists between serum vitamin D levels and IVF treatment outcome
The purpose of this study was to study seasonal inter-individual and intra-individual variations in S-25(OH)D and to explore parameters associated with S-25-OHD in healthy Swedish adults.
Extra-renal sources of 1, 25-dihydroxyvitamin D can be increased to normal serum 1, 25-dihydroxyvitamin D levels in chronic kidney disease patients after administration of high dose 25-hydroxyvitamin D. The investigators observed that 1, 25-dihydroxyvitamin D concentrations were significantly increased after 3 months of omega-3 FA supplementation compared to baseline levels without 25-hydroxyvitamin D administration in dialysis patients. In this study, the investigators hypothesized that omega-3 FA and 25-hydroxyvitamin D supplementations may increase 1, 25-dihydroxyvitamin D concentrations much more compared to 25-hydroxyvitamin D supplementation only in hemodialysis patients with insufficient or deficient 25-hydroxyvitamin D levels.
This study will supplement African American male (AAM) veterans at risk for diabetes and newly diagnosed T2DM with vitamin D (low or higher dose) and evaluate whether vitamin D helps to improve early markers of diabetes. The study will be done at Veteran Administration Medical Center in Chicago.