The Egyptian Society for Blood Transfusion Services
● Symptoms of vitamin B12 deficiency Symptoms of vitamin B12 deficiency can be divided as follows:
More commonly, classic clinical vitamin B12 deficiency symptoms of anemia include:
• Tired.
• Low weight.
Numbness in the feet.
Loss of sensation.
Vibration
Less common symptoms include:
Memory and concentration disorders.
• Changes in mood.
• Depression.
Sleep disturbances.
• Double vision.
• Autoimmune disorders.
• Various disorders of the digestive system.
Fertility problems.
● Causes and risk factors for vitamin B12 deficiency Vitamin B12 deficiency can result for several reasons, including the following:
• Lack of nutrition.
Disorders in the absorption of food, whether in the stomach or small intestine.
• Absorption disorder resulting from a deficiency of the internal gastric factor (Gastric intrinsic factor).
• atrophy of the mucous membrane of the stomach.
Pernicious anemia.
• Complete or partial removal of the stomach.
• Zollinger-Ellison Syndromesyndrome).
Infections in the intestines.
• Damage to the upper ileum of the small intestine (Lymphoma).
• Resection of the small intestine.
Diseases of the pancreas.
• Lack of absorption of cobalamin and proteinuria (Protinuria).