
Researchers suggest that vitamin D plays an important role in immune function. Immune functionĪn adequate intake of vitamin D may support good immune function and reduce the risk of autoimmune diseases. Long-term vitamin D deficiency can also present as osteoporosis. Osteomalacia results in poor bone density and muscular weakness. Similarly, in adults, vitamin D deficiency manifests as osteomalacia or a softening of the bones. Vitamin D deficiency in children can cause rickets, leading to a bowlegged appearance due to the softening of the bones.

Vitamin D promotes intestinal calcium absorption and helps maintain adequate blood levels of calcium and phosphorus, which is necessary for healthy bone mineralization.

Vitamin D plays a critical role in many bodily functions. Share on Pinterest Mateo Arias/EyeEm/Getty Images
