BACKGROUND We examined the relationship between vitamin D status and health-related quality of life, and explored other related factors in the general Korean population. METHODS We used data from the 2007-2012 Korea National Health and Nutrition Examination Survey on 14,104 adults, aged 20-49 years, who had consented to serum vitamin D measurement and answered health-related quality of life q...

conclusions although there was not a significant relation shown between vitamin d levels between the two groups in our study, the vitamin d level in ome patients was less than in the control group. therefore, it seems that measuring the level of vitamin d in these patients is necessary, and a deficiency of vitamin d must be treated. in order to achieve certain results with more detail we sugges...

The growing attention to the role of vitamin D in skeletal and extra-skeletal diseases over the last decade induced an increased demand for vitamin D determination as well as a dramatic rise of sales of vitamin D supplement. However, several critical points in this field remain to be clarified. We lack a clear consensus about the definition of vitamin D deficiency, insufficiency, and sufficienc...

BACKGROUND Primary hyperparathyroidism (PHPT) and vitamin D insufficiency are two very frequent conditions. In cases where the combination of both vitamin D insufficiency and PHPT is diagnosed, vitamin D repletion is an option. However, only limited evidence exists for this treatment. OBJECTIVE The aim of this review is to describe different aspects of concomitant vitamin D insufficiency and ...

STUDY DESIGN Initial assessment involved 360 patients (90% women and 10% men) attending spinal and internal medicine clinics over a 6-year period who had experienced low back pain that had no obvious cause for more than 6 months. The patients ranged in age from 15 to 52 years. OBJECTIVES To investigate the contribution of vitamin D deficiency as a cause for idiopathic chronic low back pain, t...

A case of antiepileptic-induced vitamin D deficiency, who presented with hypocalcemia, hyperphosphatemia with increased tubular reabsorption of phosphate mimicking pseudohypoparathyroidism type 2, is reported. He showed remarkable improvement with calcium and vitamin D treatment with normalisation of serum calcium and phosphate with reestablishment of phosphaturic response.

BACKGROUND Vitamin D deficiency is associated with an increased risk of cardiovascular disease; however, it is unclear whether vitamin D status should be considered in clinical risk assessments of patients with cardiovascular disease. METHODS AND RESULTS This study included 2975 patients who had their first serum total 25-hydroxy vitamin D (25-OH vitamin D) measurement before their first coro...

(1) BACKGROUND: studies with able-bodied athletes showed that performance might possibly be influenced by vitamin D status. Vitamin D seems to have a direct impact on neuromuscular function by docking on vitamin D receptors in the muscle tissue. Additionally, a high prevalence of vitamin D deficiency was shown not only in infants and in the elderly but also in healthy adults and spinal cord inj...

INTRODUCTION Studies about vitamin D [25(OH)D] stability in plasma are limited and preanalytical variables such as tube type may affect results. We aimed to evaluate effect of storage conditions, sample type and some preanalytical variables on vitamin D concentration. MATERIALS AND METHODS Blood samples from 15 healthy subjects were centrifuged at different temperatures and stored under diffe...

In a retrospective study, based on a biochemical survey of people aged 65 and over in a general practice, subjects taking a barbiturate preparation for indications other than epilepsy had a significantly lower serum calcium concentration than did those taking nitrazepam or diazepam. Ordinary doses of barbiturate may adversely affect vitamin D metabolism in the elderly.