The Calcium Requirement of Adult Man and the Utilization of the Calcium in Milk and in Calcium Gluconate

Abstract
The calcium balance of an adult human subject receiving a basal low-calcium diet with varying supplements of calcium in milk solids and in calcium gluconate was followed through out forty-three 4-day periods. For equilibrium 9.2 mg. of calcium per kilogram of body weight per day were required, about three-fourths of which were supplied either in milk solids or in calcium gluconate. The calcium in both of these forms was equally well utilized, but only to the extent of 20%.