Vitamin D deficiency, a worldwide health problem, is also prevalent in tropical countries. It is estimated that 15% of the world’s population are either vitamin D deficient or insufficient. In a study on the state of Kelantan in Malaysia (2010–2012), 60% of pregnant women were vitamin D deficient. Maternal vitamin D deficiency predisposes infants to vitamin D deficiency especially if they are exclusively breastfed. The prevalence of vitamin D deficiency in Malaysian infants is unknown. We conducted a cross-sectional study to ascertain the prevalence and risk factors predisposing to vitamin D deficiency in Malaysian neonates.
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