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For example, if you are being treated for type 2 diabetes with medications such as metformin, your ability to absorb vitamin B12 from the digestive tract may be reduced
Although your body is unable to generate B12, the vitamin is readily available from dietary sources including dairy, meat and fish
Finally, B12 is required to make myelin, the protective layer that coats nerve cells. B12 also works alongside folate to produce red blood cells, and without adequate B12 those cells grow abnormally large and lose their ability to carry oxygen efficiently
B12 injections are especially effective, as they provide direct absorption for optimal immune function
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