![]() This is an inflammatory condition that affects the stomach, particularly the parietal cells that make intrinsic factor. A person can take vitamin B12 supplements or consume vitamin B12-fortified foods to alleviate symptoms. This is because vitamin B12 naturally occurs in animal sources. Vitamin B12 deficiency may occur when following a vegan diet. The following factors may cause vitamin B12 deficiency. Deficiencies in cobalamin ( vitamin B12) and folate (vitamin B9) are the most common causes of megaloblastic anemia. Megaloblastic anemia is a type of macrocytic anemia. Macrocytosis occurs in people with an MCV level higher than 100 fl. If someone has a high MCV level, their red blood cells are larger than usual, and they have macrocytic anemia. If someone has severe thalassemia, they may require regular red blood cell transfusions. If a person has mild thalassemia, they may have mild anemia or not present with any signs or symptoms. Thalassemia can range from mild to severe. It is a genetic condition that a person inherits from their parents. Thalassemia is a condition where the body does not make enough normal hemoglobin. Pregnancy: During pregnancy, people may need to supplement their iron intake, as the body needs more iron to support fetal development.Reduced iron absorption: Ulcerative colitis, Crohn’s disease, weight loss surgery, and Helicobacter pylori infection may all reduce the absorption of iron.Diet: If someone eats a plant-based diet or an omnivorous diet low in iron, they may need to take iron supplements or focus on eating iron-rich foods.People with heavy periods may also lose a lot of iron through menstrual blood. Blood loss: A person may experience bleeding from the gastrointestinal (GI) tract when they have colon cancer or take nonsteroidal anti-inflammatory drugs (NSAIDs), such as aspirin.A person usually develops an iron deficiency due to an underlying health condition or factors such as diet and medications. ![]() Iron deficiency causes microcytic anemia. Microcytic anemia is a type of anemia in which red blood cells are smaller than usual. When a person has an MCV level below 80 fl, this suggests they have microcytic anemia.
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