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This is especially important if you experience symptoms commonly associated with high vitamin B12 levels in the blood, including: 9 Gastrointestinal issues, such as nausea, vomiting, or diarrhea Headaches Tingling sensations in the hands and feet Weakness and fatigue Should I Be Concerned About High Vitamin B12 Levels
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Carnitine Deficiencies There are two types of carnitine deficiency
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