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NAD+ in Aging: Role of Nicotinamide Riboside and Nicotinamide Mononucleotide
This is not uncommon and may be related to the body adjusting to a rapid increase in B12 availability, especially in patients who were significantly deficient
B12 helps the body convert food into energy, which can support metabolic function
How often you can have vitamin B12 injections depends on why you are deficient, how well your body absorbs B12, and the dose you are on
Other causes are conditions affecting the stomach or small intestine, such as Crohns disease, operations such as gastrostomies (which involve removal of part of the stomach), and certain medications
A deficiency can cause fatigue, low mood, and even brain fog
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