BACKGROUND: The worldwide prevalence of vitamin D deficiency is reported to be high. OBJECTIVES: To assess the vitamin D status in apparently healthy adults in Kashmir valley by measuring serum 25-hydroxyvitamin D (25 (OH) D). METHODS: 92 healthy natives (64 men and 28 non-pregnant/non-lactating women, aged 18-40 years), residing in Kashmir for at least last 5 years and not having any suggestion of systemic disease, were selected for this study. The samples were collected throughout the year in both summer and winter months. Vitamin D deficiency was defined as a serum 25 (OH) D concentration of <50 nmol/l and graded as mild (25-50 nmol/l), moderate (12.5-25 nmol/l) and severe (<12.5 nmol/l). RESULTS: Body mass index, total energy intake, and other nutritional parameters were comparable among subjects in different groups. Overall 76 (83%) of the subjects studied had vitamin D deficiency--25%, 33%, and 25% had mild, moderate, and severe deficiency, respectively. 49 of the 64 males and all but 1 of the 28 females were vitamin D deficient. The prevalence of vitamin D deficiency ranged from 69.6% in the employed group to 100% in the household group. Vitamin D deficiency was equally prevalent in subjects from rural and urban areas. Serum calcium and phosphorus values were comparable in subjects with and without vitamin D deficiency, while daily intake and urinary excretion of calcium were significantly lower in the former. Vitamin D deficient subjects had a significantly lower mean weekly exposure to sunlight. CONCLUSIONS: In spite of abundant sunlight, healthy individuals in Kashmir valley are vitamin D deficient, particularly women. Serum 25 (OH) D concentrations are significantly related to sun exposure.
BACKGROUND: The worldwide prevalence of vitamin D deficiency is reported to be high. OBJECTIVES: To assess the vitamin D status in apparently healthy adults in Kashmir valley by measuring serum 25-hydroxyvitamin D (25 (OH) D). METHODS: 92 healthy natives (64 men and 28 non-pregnant/non-lactating women, aged 18-40 years), residing in Kashmir for at least last 5 years and not having any suggestion of systemic disease, were selected for this study. The samples were collected throughout the year in both summer and winter months. Vitamin D deficiency was defined as a serum 25 (OH) D concentration of <50 nmol/l and graded as mild (25-50 nmol/l), moderate (12.5-25 nmol/l) and severe (<12.5 nmol/l). RESULTS: Body mass index, total energy intake, and other nutritional parameters were comparable among subjects in different groups. Overall 76 (83%) of the subjects studied had vitamin D deficiency--25%, 33%, and 25% had mild, moderate, and severe deficiency, respectively. 49 of the 64 males and all but 1 of the 28 females were vitamin D deficient. The prevalence of vitamin D deficiency ranged from 69.6% in the employed group to 100% in the household group. Vitamin D deficiency was equally prevalent in subjects from rural and urban areas. Serum calcium and phosphorus values were comparable in subjects with and without vitamin D deficiency, while daily intake and urinary excretion of calcium were significantly lower in the former. Vitamin D deficient subjects had a significantly lower mean weekly exposure to sunlight. CONCLUSIONS: In spite of abundant sunlight, healthy individuals in Kashmir valley are vitamin D deficient, particularly women. Serum 25 (OH) D concentrations are significantly related to sun exposure.
Authors: Michael F Holick; Ethel S Siris; Neil Binkley; Mary K Beard; Aliya Khan; Jennifer T Katzer; Richard A Petruschke; Erluo Chen; Anne E de Papp Journal: J Clin Endocrinol Metab Date: 2005-03-29 Impact factor: 5.958
Authors: Marieke B Snijder; Rob M van Dam; Marjolein Visser; Dorly J H Deeg; Jacqueline M Dekker; Lex M Bouter; Jaap C Seidell; Paul Lips Journal: J Clin Endocrinol Metab Date: 2005-04-26 Impact factor: 5.958
Authors: A Mithal; D A Wahl; J-P Bonjour; P Burckhardt; B Dawson-Hughes; J A Eisman; G El-Hajj Fuleihan; R G Josse; P Lips; J Morales-Torres Journal: Osteoporos Int Date: 2009-06-19 Impact factor: 4.507