An important study appeared in JAMA Psychiatry in June 2016, providing additional evidence that high blood levels of Vitamin B12 can slow the shrinking of the brain that commonly occurs after age 60. Previous studies have shown that vitamin  B12 and other B vitamins (folic acid and vitamin B6) can slow the rate of brain atrophy in older subjects with mild cognitive impairment and decrease the risk of progression to Alzheimer’s disease.

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