Overview
An autoimmune attack on parietal cells and intrinsic factor → low stomach acid + B12 deficiency.
Symptoms
• Fatigue
• Bloating
• Anemia
• Glossitis
• Tingling (neuropathy)
• Upper abdominal discomfort
Diagnosis
• Antibody tests
• Endoscopy + biopsy
• B12 levels
Treatment
• B12 injections
• Iron supplementation
• Monitoring gastric cancer risk
• Managing reflux
Self-Management
Track fatigue, B12 response, and GI symptoms over time.