Vitamin B12 Reduces the Risk for Alzheimer’s Disease

By: Byron J. Richards, Board Certified Clinical Nutritionist
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A Finnish study followed 271 elderly individuals ages 65 – 79 for seven years.  The participants were dementia-free at the start of the study.  As the level of B12 went up1 in their blood, the risk for developing Alzheimer’s went down.

The researchers also measured homocysteine, a potentially toxic metabolite that required B12 to help naturally clear it from the body.  As homocysteine levels went up so did the risk for Alzheimer’s.  In this study blood levels of folic acid were not associated with the homocysteine or the risk of Alzheimer’s, whereas B12 seemed to be the key.

Vitamin B12 is commonly deficient in elderly individuals, another good reason why all elderly individuals should be on a high quality multiple vitamin or B complex that contains the active form of B12 known as methylcobalamin.

Referenced Studies:
  1. ^ Vitamin B12 and the Risk of Alzheimer Disease  Neurology  1.B. Hooshmand, A. Solomon, I. Kåreholt, J. Leiviskä, M. Rusanen, S. Ahtiluoto, B. Winblad, T. Laatikainen, H. Soininen, and M. Kivipelto

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