Chapter 9 IRON DEFICIENCY ANEMIA

7 downloads 348 Views 179KB Size Report
The Centers for Disease Control and Prevention (CDC) recommendations for screening adolescents for anemia suggest that .
Chapter 9 IRON DEFICIENCY ANEMIA Irene Alton Iron deficiency is the most prevalent nutritional deficiency and the most common cause of anemia in the United States.1 Iron deficiency anemia is characterized by a defect in hemoglobin synthesis, resulting in red blood cells that are abnormally small (microcytic) and contain a decreased amount of hemoglobin (hypochromic).2 The capacity of the blood to deliver oxygen to body cells and tissues is thus reduced. According to the third National Health and Nutrition Examination Survey (NHANES III) data, iron deficiency, defined by two or more abnormal measurements (serum ferritin, transferrin saturation and/or erythrocyte protoporphyrin), continues to be relatively prevalent in U.S. females, affecting 7.8 million adolescents and women of childbearing age.3 Iron deficiency anemia, a more severe stage of iron deficiency (defined as a low hemoglobin in combination with iron deficiency), was found in 3.3 million females.3 The prevalence of iron deficiency and anemia in adolescent males and females, based on the 5th percentile, NHANES III data, is listed in Table 1. TABLE 1 Prevalence of Iron Deficiency and Iron Deficiency Anemia in Adolescent Males and Nonpregnant Females Gender/Age (yrs) Females 12-15 16-19

Iron Deficiency

Iron Deficiency Anemia

9% 11%

2% 3%

1%