Introduction: Vitamin D deficiency is associated with osteoporosis in the elderly and rickets in children, it is also linked to increase the risk of certain cancers, cardiovascular diseases, diabetes type1, immunity and also having an impact on various other health conditions. Evidence has shown that vitamin D plays a vital role in calcium and bone metabolism and maintaining serum calcium levels. Evidence Acquisition: This paper intend to review the Knowledge Attitude and Factors Responsible for Vitamin D and Calcium Deficiency among Youth. And the relationship of vitamin d deficiency on various chronic diseases and other health problems that is faced by human being. Information used in this review article is mainly obtained from scientific electronic academic journal database. For writing a review on this paper more than 10 studies have been reviewed using electronic data base, i.e., google scholar, PubMed, Medline, Elsevier, WHO, science direct. Result: Poor vitamin D status or vitamin d deficiency is almost commonly reported across all age groups with 95.7 % neonates (new born), 75 % adults and 67 % pregnant women their (serum 25 hydroxy )vitamin D levels < 50 nmol/L (deficient). Those Children and adults whose exposed to sunlight, or living in rural having better vitamin D status, especially in summer months. Despite adequate sunshine in Asian countries they are reported to have a poor vitamin D status their regions. Data to describe the extent of vitamin D deficiency most Asian countries at the population level, including India, are limited. Conclusion: India being with a large country covering several latitudes, ethnicities, cultures, traditions, and attitudes, the current data about vitamin D status in India is insufficient and classified in different ways, making analysis difficult, and is unreliable with about half the data comes from Delhi. There are Lack of conclusive data emphasizes the need for state-specific data on the vitamin D status.
vitamin D, calcium, deficiency, sun exposure, knowledge, awareness, epidemic
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