BIOCHEM 2EE3 Lecture Notes - Lecture 4: Ferritin, Transferrin, Hemoglobin
30 Sep 2018
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Hemoglobin (functional unit): contains iron; too little iron results in anemia, younger children iron deficiency = slower brain development. Consume iron to prevent hemoglobin declining: hemoglobin = 4 highly-folded polypeptide chains. Low intake of iron (for a longer period of time). Blood levels of ferritin (iron-binding protein) low. Set to provide adequate energy/nutrients, and to reduce chronic disease risk. Estimates apply to healthy people; adjustments may be required. Ears are used for groups; rdas for individuals. Physical examinations of the body; provides clues to nutritional status. Lab tests: reveal values of certain nutrients in the blood, most useful in uncovering early stages of deficiency before symptoms appear. Stages in the development of a nutrient deficiency: Main focus of developed countries is on chronic disease development due to an excess intake of energy and nutrients. Factors for chronic disease include: to(cid:271)a(cid:272)(cid:272)o use, al(cid:272)ohol use, hype(cid:396)te(cid:374)sio(cid:374), physi(cid:272)al i(cid:374)a(cid:272)tivity, u(cid:374)healthy diet .
