Donating a unit of whole blood or double red cells (2-units) removes iron from your body. You need iron to make new red blood cells. Low levels of iron can cause anemia or make it worse. All blood donors should learn more about iron. 1  Everyone should eat a healthy diet.2  All blood donors should add foods rich in iron to their diet.ou need iron to make new red blood cells. Low levels of iron can cause anemia or make it worse. All blood donors should learn more about iron. 1  Everyone should eat a healthy diet. 2  All blood donors should add foods rich in iron to their diet.
What is the 'Average-Cost Method'. The average-cost method is a costing method by which the value of a pool of assets or expenses is assumed to be equal to the average cost of the assets or expenses in the pool. BREAKING DOWN 'Average-Cost Method'.
2015 Cost vs Value Report. This site compares average cost for 30 popular remodeling projects with the value those projects retain at resale in 100 U.S. markets. Check out this year's trends and how they compare to prior years. Editor's Note: Please see here for an important update.