Study of Vitamin D Deficiency among the Apparently Healthy Population in Jashore, Bangladesh

Globally Vitamin D deficiency is a burning issue for the last two decades. Though the very high prevalence of hypovitaminosis D is worldwide even in the South-East Asia but there is very limited data in Bangladesh. This observational study was designed to assess the status of Vitamin D deficiency among the clinically apparent healthy population in the district of Jessore, Bangladesh from January 2017 to June 2017. Both the male and female clinically healthy participants between the age of 10 and 70 years residing more than 3 years in Jashore were included in this study, while those having renal or liver failure or any other chronic diseases and using drugs that could potentially interfere the metabolism of vitamin D were excluded from the study. Here we leveled serum 25(OH)D concentration of ≤20ngm/dl as deficient, >20-30ngm/dl graded as insufficient and >30ngm/dl graded as sufficient. Among 160 participants 43.1% (n=69) were male and 56.9% (n=91) were female. And 102(63.7%) participants had deficient vitamin D, 50(31.3%) had insufficient vitamin D and only 8(5%) had sufficient vitamin D. The mean serum 25(OH)D levels in our study was 18.60±6.59ngm/dl. The mean serum 25(OH)D level in case of male participants was 19.72±7.10ngm/dl whereas in female the corresponding figure was 17.74±6.07gm/dl and no significant difference observed among the man and women (p=0.059). Sun exposure play a vital role in the vitamin D deficiency and we observed only 1-2 hours/day sun exposure was sufficient for normal vitamin D level (p=0.001). In case of women who used veil had significantly lower level of vitamin D (p=<0.001) due to lack of adequate sun exposure. Urban participants who also had significant low level of vitamin D due to the same reason (p=0.009). There was no deficiency observed in farmers and only 5(3.1%) had insufficient vitamin D. No significant difference observed in deficiency of vitamin D among the different age, sex, education level, skin complexion or BMI. But the obese participants had significant (p=0.041) lower vitamin D level. It was concluded with the high rate of vitamin D deficiency in this small scale study conducting in a district of Bangladesh demands a nationwide survey of vitamin D.