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Because B12 is water soluble, the body doesnt store large amounts of it long-term the way it stores fat-soluble vitamins, which is one reason ongoing dietary intake or supplementation matters for some people more than others
They have lots of advice on using Vitamin B12
Insider's takeaway Vitamin B12 injections are for those with a severe B12 deficiency or conditions that prevent their body from effectively absorbing the vitamin, Moreno says
The HbA1c test measures glycated haemoglobin over two to three months and relies on normal red blood cell turnover a process directly disrupted by vitamin B12 deficiency
This enzyme wastes a helpful molecule called nicotinamide (a form of vitamin B3) by turning it into something useless instead of recycling it into NAD+, think of NAD+ as the main battery fuel that powers your cells energy factories (mitochondria)
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