Not the same ~ hypoglycemia is just low blood sugar, and there are many kinds of anemia, iron deficiency anemia: iron deficiency and affect the synthesis of hemoglobin caused by anemia, seen in malnutrition Anemia, a large number of growth period of small amount of bleeding and hookworm disease; as long as it is a woman will be more prone to suffer from iron deficiency anemia, this is because the female physiological period each month will be fixed loss of blood.

Hemorrhagic anemia: caused by acute massive bleeding (e.g., gastric and duodenal ulcer disease, ruptured esophageal varices or trauma).

Hemolytic anemia: anemia caused by excessive destruction of red blood cells, but less common; often accompanied by jaundice, called "hemolytic jaundice".

Megaloblastic anemia: anemia caused by lack of red blood cell maturation factors, lack of folic acid or vitamin B12 caused by megaloblastic anemia, most often in infants and pregnant women with chronic malnutrition; megaloblastic anemia is a type of anemia in which a large number of megaloblasts appear in the bone marrow.

This is the conventional classification of anemia, anemia is not simply a lack of a certain substance, do not confuse the concept, I hope to help you with your questions.