Vitamin D deficiency and causative factors in the population of Tehran

• Main Authors: Hamidi Zohreh (Author), Shafaei Ali (Author), Soltani Akbar (Author), Pajouhi Mohammad (Author), Sedaghat Mojtaba (Author), Javadi Ebrahim (Author), Adibi Hossein (Author), Larijani Bagher (Author), Hashemipour Sima (Author), Fard Ali (Author), Hossein-Nezhad Arash (Author), Booya Fargol (Author)
• Format: Book
• Published: BMC, 2004-08-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

<p>Abstract</p> <p>Background</p> <p>There are multiple studies in different countries regarding the prevalence of vitamin D deficiency. These studies showed high prevalence of vitamin D deficiency in Asian countries. This study tries to elucidate the prevalence of vitamin D deficiency and its influencing factors in population of Tehran.</p> <p>Methods</p> <p>1210 subjects 20-64 years old were randomly selected. 25 (OH) D serum levels were measured. Duration of exposure to sunlight, the type of clothing and level of calcium intake and BMI were quantified based on a questionnaire.</p> <p>Results</p> <p>A high percentage of vitamin D deficiency was defined in the study population. Prevalence of severe, moderate and mild Vitamin D deficiency was 9.5%, 57.6% and 14.2% respectively. Vitamin D serum levels had no significant statistical relation with the duration of exposure to sunlight, kind of clothing and BMI. Calcium intake in the normal vitamin D group was significantly higher than the other groups (714.67 ± 330.8 mg/day vs 503.39 ± 303.1, 577.93 ± 304.9,595.84 ± 313.6). Vitamin D serum levels in young and middle aged females were significantly lower than the older group.</p> <p>Conclusions</p> <p>Vitamin D deficiency has a high prevalence in Tehran. In order to avoid complications of vitamin D deficiency, supplemental dietary intake seems essential.</p>

Item Description

10.1186/1471-2458-4-38
1471-2458