Iron Absorption from the Whole Diet: Comparison of the Effect of Two Different Distributions of Daily Calcium Intake Hypothesis - If a woman distributes her daily intake of calcium by having less of it in her lunch and dinner meals and more in her breakfast and evening meals, then this would reduce the inhibitory effects calcium has on heme iron and nonheme iron absorption. Background Information - This experiment is one of many that addresses calcium’s inhibitory affects on iron absorption. In 1994, the Consensus Development Panel in Opti ....