Vitamin D is a fat-soluble vitamin and contains a steroidal molecular structure that is needed for various metabolic processes in the body. There are two sources of vitamin D, namely through manufacture in the skin and the impact of food intake. Vitamin D is divided into 2 forms, namely vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol), vitamin D is also actively involved in bone formation,  resorption,  mineralization,  and  maintenance  of  neuromuscular function. Vitamin D deficiency has been widely known to affect linear growth from infants, toddlers to adults. The design of this research is the literature of research  articles  collected  by  means  of  computer  searches  through  google schoolar and repository. Screening can be monitored so that bone growth in toddlers can be optimized properly and correctly.
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