This document provides information about hemoglobin and anemia. It describes the structure and function of hemoglobin, located within red blood cells, and how it transports oxygen throughout the body. Signs and symptoms of low hemoglobin (anemia) are discussed. Dietary and non-dietary causes of anemia are outlined. The normal hemoglobin levels for adult women and populations at higher risk for anemia are defined. Recommended protocols for referral for low hemoglobin values are presented.