5. What is the Function? • Hemoglobin: oxygen transport to tissues • Myoglobin: Storage of oxygen in muscle • Cytochromes: Transport of oxygen to respiratory chain • Mono- and Dioxygenase • Other Enzymes
6. How is it Absorbed? • Where: Duodenum and Upper Jejunum • How: Protein Transport to get through basolateral membrane
7. Heme vs Non-heme • Heme: 15% iron found in diet (Meat, poultry, and fish) • Non-heme: Plants, dairy, eggs, and iron salts
8. Examples of Iron Foods 1. Raisin bran cereal 1 cup: 5.79-18mg 2. Lentils 1/2 cup: 3.3mg 3. Black Strap Molasses 1tbsp: 3.50 4. Beef 3oz: 2.32
9. RDA • Males 19-50yrs: 8 mg per day • Females 19-50yrs: 18 mg per day • UL: 45 mg per day
10. Iron Deficiency • Primary and Secondary: Affects 16 million per year • Who is at risk? Preschool children and pregnant women • What does iron deficiency mean? Deplete of iron stores • Symptoms of deficiency: Fatigue, headache, weakness, and more
11. Iron Overload • What is iron overload? • Can cause liver damage, diabetes, heart disease, and arthritis • Tolerable Upper Limit for Adults: 45mg • Signs and Symptoms: fatigue, free radical damage, these worse in alcoholics
12. Pregnant Women • 50% more blood in the body when pregnant • 2nd+3rd Trimester the babies need for iron is crucial • Iron-deficient: preterm birth, low birth weight,and infant mortality • Pregnant need 27mg, non-pregnant only need 8mg
14. The Fun Facts • 5x daily intake to get iron overload • 80% of worlds population is iron-deficient • Cooking iron foods in an iron skillet helps with absorption • Within the human body there is enough iron to make a nail • Dark rich red color of blood is due to iron
15. Fun Facts Continued • Iron is toxic in high doses-combines to oxygen and makes free radicals
