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B12 is also necessary for metabolic and hormonal function

You need a valid prescription from your GP following confirmed diagnosis of B12 deficiency through blood tests

Vegans and Vegetarians : Individuals following plant-based diets may be at a higher risk of B12 deficiency and can benefit from B12 supplementation through injections

In a laboratory setting, the properties of these enzymes have been harnessed by researchers to perform genetic engineering such as CRISPR-Cas gene editing

High-risk patients include those younger than 3 years of age or having a residual tumor or disseminated disease at diagnosis (Packer et al., 2003)