Which of the following is a potential consequence of severe vitamin D deficiency in newborns?

Severe vitamin D deficiency in newborns can lead to congenital rickets and fractures due to the essential role that vitamin D plays in calcium absorption and bone metabolism. Inadequate levels of vitamin D can result in poorly mineralized bone tissue, which is characteristic of rickets, a condition that manifests as soft and weakened bones in infants and young children. This can lead to deformities and an increased risk of fractures, as the structural integrity of the bones is compromised. Therefore, the association between severe vitamin D deficiency and the development of rickets, as well as increased fracture susceptibility, is a significant concern in pediatric health.

The other options do not accurately reflect the consequences of severe vitamin D deficiency in newborns. For instance, improved immunity, enhanced bone density, and normal prenatal development are typically linked to adequate levels of vitamin D rather than a deficiency. Thus, recognizing the link between vitamin D deficiency and rickets is vital for understanding the potential health consequences for newborns.