"Because copper is necessary for the utilization of Iron, Iron deficiency Anaemia may be a symptom of Copper deficiency. "

http://calosol.com/copper.php

http://www.whfoods.com/genpage.php?tname=nutrient&dbid=53


"Absorption of folic acid occurs primarily in the upper small intestine and does not depend on intrinsic factor as vitamin B12 does. A deficiency of folic acid is more common than a cobalamin (B12) deficiency. Folic acid stores are also depleted more rapidly than cobalamin stores and, without proper dietary intake, a megaloblastic anemia will develop. "

http://www.innvista.com/health/ailments/anemias/folicdef.htm