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Vitamin B12 deficiency has been linked to extreme tiredness lack or energy cancer cardiovascular disease, dementia decline in cognitive function nervous system damage anaemia mouth ulcers mental health conditions visual problems
[4] However, consistently taking large amounts of vitamins from multiple sources could potentially increase the risk of side effects (for example, very high vitamin B intake from multiple supplements over time can cause neuropathy, and high niacin from many sources could affect your liver)
However, once diagnosed it presents a difficult management problem in patients suffering from pernicious anemia, as there is no substitute
Better mood and mental clarity: Supports overall nervous system health by aiding in the proper functioning of nerve cells and signaling pathways, which can help you feel more focused and alert throughout the day
But they can occur
If you need to recover quickly from an illness that depleted your B12 reserves or have recently discovered you have a B12 deficiency that is impacting your quality of life, one solution is to give your body a larger dose of B12 all at once
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