From this article Vitamin B12 link to Alzheimer's backed by study
A recent trial found that "brain shrinkage", which has been associated with Alzheimer's, was slowed in older people taking high doses of vitamins, including B12.
However, an Alzheimer's charity said despite the findings, published in the journal Neurology, it was "too early" to think about taking supplements.
It called for more research into the protective power of vitamins such as B12 - found in meat, fish and eggs
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