Vitamin D deficiency is a worldwide health issue especially in women. Serum vitamin D
concentrations vary depending on the weather. However, the ideal vitamin D …

Objective: To determine the vitamin D status of Korean postmenopausal women during the
winter months according to the intake of vitamin D supplements. Design: Cross sectional …

This study was performed to estimate serum 25-hydroxyvitamin D (25-OHD) level in
wintertime and to evaluate the relationship between serum 25-OHD level and associated …

Vitamin D status is essential for preventing bone disease. Young Korean women have the
highest vitamin D deficiency prevalence compared with other demographic groups. This …

The vitamin D status of 179 Korean women between the ages of 20 and 75 were measured
by the use of high performance liquid chromatography (HPLC). Related biochemical indices …

Objectives The purpose of this study was to examine the relative impact of seasonal
differences and age on dietary vitamin D intakes, outdoor activity time and serum vitamin D …

In this study, the serum level of 25-hydroxyvitamin D (25-(OH) D) was measured by high
pressure liquid chromatography (HPLC), and factors affecting it were investigated in 72 …

Pregnant women with low vitamin D levels tend to have poor clinical outcomes.
Meteorological factors were associated with vitamin D. Here, we aimed to study the current …

Vitamin D is important for maintaining bone health and may prevent various diseases (ie,
cardiovascular disease and cancer). The aim of this study was to estimate vitamin D intakes …

Purpose: Vitamin D deficiency is a global health problem that is associated with increased
risks of major diseases. This study investigated the status of 25-hydroxyvitamin D [25 (OH) …