To understand nutritional rickets in Bangladesh better, 14 rachitic and 13 'unaffected' children were evaluated. Seventy per cent of children with active rickets had no evidence of either vitamin D deficiency or familial rickets. Rickets in Bangladesh is probably related to calcium deficiency. Abnormalities in 'unaffected' children suggest that subclinical calcium insufficiency is common.

Author notes

AMayo Clinic, Rochester, Minnesota, USA BSociety for Assistance and Rehabilitation of the Physically Vulnerable, Dhaka, Bangladesh CAmis des Enfants du Monde, Grenoble, France DUNICEF, Dhaka, Bangladesh EInstitute of Child and Mother health, Dhaka, Bangladesh FUniversity of Dhaka, Dhaka, Bangladesh GMemorial Christian Hospital, Chakaria, Bangladesh HCornell University, Ithaca, NY, USA IInternational Maize and Wheat Improvement Center, Dhaka, Bangladesh JVirginia Commonwealth University, Richmond, Virginia, USA ZCorresponding author E-mail: fischer.phil@mayo.edu