Wednesday, 21 November 2012

Vitamin D deficiency is common among Shanghai residents

Shanghai is located on the eastern coast of China, with a subtropical latitude of 31°N, where vitamin D deficiency is assumed not to be a clinical problem due to the abundant sunshine. However, the results of a new study challenge this assumption. Research by clinicians from Shanghai Jiao Tong University Affiliated Sixth People's Hospital has shown there here is a high prevalence of vitamin D insufficiency and/or deficiency among healthy adults living in Shanghai during the winter season.
The study involved 649 men and 1939 women aged 20–89 years who were randomly sampled in Shanghai.  During the winter season, the prevalence of vitamin D insufficiency (defined as a level below 30 ng/mL) was 84% in males and 89% in females. The prevalence of vitamin D deficiency (defined as below 20 ng/mL) was 30% in males and 46% in females.
The results of the study confirm the observation that vitamin D deficiency and/or insufficiency is endemic in urban Chinese.
Read more: PLOS One

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