Women need Iron, either by eating Liver or by iron-polysaccharide complexes

Low iron levels are a major health problem, accounting for many undiagnosed cases of lethargy and fatigue.  A routine blood chemistry test will measure many parameters of serum iron and hemoglobin; but many blood tests fail to include a test for ferritin.  Ferritin is the body's primary iron storage protein and is a much more sensitive measure of iron levels.  You may have to specifically request a ferritin test when getting a blood chemistry analysis.  Ferritin will also often detect internal blood loss that may be a very early indication of a potentially major disease.

 The safest iron supplements are probably the iron-polysaccharide complexes:  essentially iron bound up in a complex sugar molecule.  They are sold under brand names such as Niferex, Ferrex-150 and Nu-Iron.