Anemia in humans

Anemia is a blood disorder that is most often found, in which the hemoglobin concentration in the blood has decreased to below the normal range according to age and sex. In addition to decreased hemoglobin, anemia was also a decline in the number of
red blood cells (erythrocytes).
Hemoglobin is the component of red blood cells in charge
carries oxygen from the lungs to the body tissues. Most types of anemia is iron deficiency anemia. Iron is an essential component of hemoglobin, and iron deficiency in food intake resulting in low levels of hemoglobin
in the blood.
Iron deficiency usually occurs in
women of childbearing age, but can also in infants, children, and adolescents in its infancy. Pernicious anemia is a type of anemia in which there is a shortage substance (intrinsic factor)
it takes the body to absorb and process vitamin B12. This type of anemia is often hereditary (inherited) and is usually experienced by elderly individuals.
Folic acid deficiency anemia is characterized by a reduced number of red blood cells, and red blood cells is large (abnormal), or also called megaloblastic anemia. Poor diet and alcohol consumption habits are the cause
Most of folic acid deficiency. In addition, folic acid deficiency can also be caused by factors such as malabsorption and the use of certain drugs (eg antibiotics).
Symptoms of folic acid deficiency anemia include: weight loss, diarrhea, and reduced ability to perform physical exercise (sports).