Is rickets hereditary?

In daily life, we frequently encounter various diseases—such as genetic disorders, which are passed from one generation to the next based on the parent’s health condition. So, is rickets hereditary?

Is Rickets Hereditary?

Rickets is not a genetic disorder; rather, it is a nutritional deficiency disease caused by vitamin D insufficiency. Its primary manifestations include枕秃 (occipital alopecia), excessive sweating, flared rib margins, and night terrors during infancy. After the child begins walking, skeletal deformities such as genu valgum (X-shaped legs) or genu varum (O-shaped legs) may develop. These abnormalities result from impaired calcium absorption due to vitamin D deficiency, leading to defective bone mineralization. As a nutritional disorder, rickets is entirely treatable—simply correcting the vitamin D deficiency is sufficient. It is not caused by genetic factors.

There is a condition termed “congenital rickets,” but this is also not genetically inherited. Instead, it arises when the mother has severe vitamin D deficiency during pregnancy, resulting in fetal vitamin D deficiency *in utero*. Affected newborns may present with marked laryngeal cartilage softening or congenital chest wall deformities such as pigeon chest (pectus carinatum) or funnel chest (pectus excavatum). Although termed “congenital rickets,” this condition stems from maternal vitamin D deficiency—not from genetic transmission.

Rickets is not a hereditary disease; it is a nutritional disorder that induces certain metabolic disturbances. However, constitutional traits—such as individual variations in nutrient absorption efficiency, metabolic capacity, and digestive function—can indeed be inherited. We hope this article has been helpful to you!