Iron deficiency anemia causes

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Causes

Increased iron requirement

Blood loss

• Mensturation
• Gastrointestinal tract
  • Food sensitivity
  • Hookworms
• Genitourinary tract
• Respiratory tract
• Blood donation

Inadequate iron absorption

• Dietary deficiency
• Impaired absorption
  • Intestinal malabsorption
  • Gastric surgery
  • Hypochorhydria

• Chronic bleeding (hemoglobin contains iron)
  • Excessive menstrual bleeding
  • Non-menstrual bleeding
  • Bleeding from the gastrointestinal tract (ulcers, hemorrhoids, Esophageal varices, The use of aspirin, ibuprofen, or arthritis medicines for a long time, Cancer in the esophagus, stomach, or colon etc.)
  • Rarely laryngological bleeding or from the respiratory tract
• Inadequate intake (special diets low in dietary iron)
• Substances (in diet or drugs) interfering with iron absorption
• Malabsorption syndromes

• Celiac disease
• Crohn's disease
• Gastric bypass surgery
• Taking too many antacids that contain calcium

• You may not get enough iron in the diet if:

• You are a strict vegetarian
• You are an older adult and do not eat a full diet