Prevalence of 25(OH)D in Asian Indians Several studies from India have shown wide prevalence of vitamin D deficiency (VDD) in India, Goswami et al studied serum 25 (OH)D levels and its functional significance in apparently healthy subjects residing in Delhi. In this study three groups of subjects (soldiers, depigmented person and physicians and nurses) were studied in winter. Other three groups namely pregnant women, newborns and physicians and nurses were studied in summer. All the groups except one with maximum sunlight exposure (soldiers) had subnormal concentration of serum 25(OH) D levels. Vitamin D deficient groups tended to have an imbalance in bone mineral homeostasis when exposed to winter and low dietary calcium and high dietary phytate, with significantly low serum calcium and elevated PTH.On the basis of the studies related to the intestinal calcium absorption, inverse relation with serum iPTH concentration and protection from fracture risk, a recent consensus has suggested that an ideal health based normal cutoff of circulating serum 25(OH) D would at least be 32 ng/mL. Interestingly, using the above consensus, recent studies conducted at AIIMS, by Goswami et al , have shown that 94.3% of the apparently healthy northern Indian subjects residing in Delhi were vitamin D deficient (AJCN 2006, BJN 2008).