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Symptoms of real deficiency include fatigue, tingling or numbness in hands and feet, memory and concentration issues, mouth ulcers and pale skin, and a GP blood test is the only reliable way to confirm it
This ensures adequate healing time between injections to the same location
With no stomach, your body doesnt have a way to remove B12 from food so it can be absorbed
Insufficient intrinsic factor production, common in older adults due to age-related absorption decline, can also lead to deficiency
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