Anemia

Demographics
The exact number of people in any region with genus Anemia is difficult to determine because the disorder often goes undiagnosed. correspond to the National Heart, Lung, and Blood Institute (NHLBI), anemia affects more than than 3 million Ameri shtups. Other sources estimate that 4% of men and 8% of women in the general populations of Canada, the United States, and Western Europe confuse mild anemia. It is thought that the rates of anemia are 2-5 measure higher in the growing countries. According to the World health Organization (WHO), compress deficiency is the most important nutritionary disorder in the world. WHO, estimates that 80% of the worlds population may be iron deficient. The prevalence of vitamin B12 deficiency among the geriatric population is estimated at 5-15%. Although the prevalence of anemia is greater in women than men aged less than 75, by age 75, male prevalence surpasses effeminate prevalence by about 5%. Anemia can be mild, moderate, or severe enough to lead to sober complications. More than 400 different types of anemia have been identified, some(prenominal) of which are rare.

Iron deficiency anemia
The onset of iron deficiency anemia is gradual and, at first, there may not be any symptoms. The deficiency begins when the corpse loses more iron than it derives from food and other sources.



Because depleted iron stores cannot concern the fierce blood cells needs, fewer red blood cells develop. In this early stage of anemia, the red blood cells look chemical formula but they are reduced in number. Then the body tries to compensate for the iron deficiency by producing more red blood cells, which are characteristically small in size. Symptoms of anemia develop at this stage.

Folic dosage deficiency anemia
Folic acid anemia is especially common in infants and teenagers. Although this condition usually results from a dietary deficiency, it is sometimes due to inability to cod enough folic acid from such foods.
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