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This ensures treatment works well and is safe for each patient
However, it's also possible for you to struggle with a B12 deficiency even if you don't have an underlying health condition
When your body doesn't have enough, you begin to feel tired and weak
Older adults, who often suffer from decreased hydrochloric acid in the stomach, and individuals with gastrointestinal (GI) disorders may have lower absorption of B12.2,4 Vitamin B12 deficiency may be characterized by megaloblastic anemia, fatigue, weakness, constipation, loss of appetite, soreness of the mouth or tongue, and weight loss
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