Patients who have undergone gastric banding should be aware of the following signs that may indicate falling B12 levels and warrant prompt blood testing: Neurological symptoms: Tingling, numbness, or 'pins and needles' in the hands or feet Difficulty with balance or coordination Memory problems, difficulty concentrating, or 'brain fog' Mood changes, including low mood or irritability Haematological symptoms: Persistent fatigue or weakness disproportionate to activity levels Breathlessness on mild exertion Pallor or a slightly yellowish tinge to the skin Other indicators: A sore, smooth, or inflamed tongue (glossitis) Mouth ulcers occurring frequently It is important to recognise that some of these symptoms particularly fatigue and low mood are non-specific and may overlap with other post-operative nutritional deficiencies, such as iron or vitamin D deficiency
Even the National Institutes of Health website will tell you there is no toxicity to B12
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It usually happens immediately after and in lesser cases, several hours post-vaccination
If the symptoms of vitamin B12 deficiency are not evident earlier because of the folate intake, the effects may become irreversible
Therefore, serum B 12 values above the cut-off point of deficiency do not necessarily confirm adequate B 12 status