Osteological evidence for juvenile vitamin D deficiency in a 19th century suburban population from Surrey, England.

Vitamin D deficiency rickets was considered endemic in the industrialized cities of 19th century England, but was rarely reported in more rural and suburban areas. The commercial excavation of St. John's Church, Redhill, Surrey, UK provided an opportunity to examine to what extent suburban children were affected by rickets and the factors responsible for its development. Seventy-nine non-adults (0-17 years) from St. John's Church were subjected to macroscopic and radiographic analysis to identify skeletal manifestations of vitamin D deficiency. Rachitic lesions were identified in 14/79 individuals (17.7%) aged from six months to six years. Active cases occurred from six months to two years of age with healed cases observed from three to six years. One seven month old infant also displayed healed lesions. The age-specific pattern of active and healed rickets suggests the population was vulnerable to the seasonal restriction of sunlight hours, with the considerably low vitamin D content of the infant diet unable to provide sufficient amounts to maintain metabolic functions. This research demonstrates that rickets was not simply a disease of industrialization but that a variety of factors contributed to its development in groups previously considered to be low risk.