Endofactor is a glycoprotein secreted by the cells of the stomach lining and is inextricably linked to vitamin B12. Endofactor can have a molecular weight of 50,000 and contains about 1/3 the amount of sugar. The role of endofactor is to fully facilitate the absorption of vitamin B12, and the two combine to become the endofactor-B12 complex, which keeps it from being damaged by intestinal hydrolyzing enzymes. Once the body lacks internal factor will lead to vitamin B12 absorption obstacles, thus affecting the production of red blood cells and lead to the emergence of megaloblastic anemia. So usually must pay attention to food reasonable even with, eat more dietary fiber and high protein food, in order to improve the body’s immunity. If there is any discomfort, consult a doctor in time.