Rickets Due to Calcium Deficiency

Abstract
The importance of an adequate intake of calcium for normal skeletal growth and mineralization is well known. However, the dietary requirement for calcium is hard to define,1 2 3 4 5 6 and whether an inadequate intake causes osteoporosis or rickets has not been established.6 7 8 9 10 Maltz et al.11 described one child with rickets that they concluded was caused by a deficient intake of calcium, but biochemical confirmation of the adequacy of the vitamin D intake was lacking. That patient represents the only human case of calcium deficiency rickets cited in reviews on this subject.6 , 7 In the infant with severe rickets described below, who had received . . .