Neonates, or newborns, are at a critical stage of growth and development. Adequate levels of vitamin D are essential for several reasons: - Bone Health: Vitamin D ensures proper bone mineralization, preventing conditions like rickets. - Immune Function: It helps in the maturation of the neonatal immune system, offering protection against infections. - Cell Growth: It regulates the growth and differentiation of cells, which is crucial during the early stages of life.