Vitamin B12 deficiency may increase the risk of reduced mental function and increase the loss of brain volume. This is not the first study to explore this. In 2008 Oxford researchers found that people with higher B12 blood levels were 6 times less likely to experience brain shrinkage.
A daily morning dose of 2000 mcg methylcobalamin B12 may be needed to boost B12 levels. Please get a blood test to follow up where you are at.
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