A National Academy of Science study shows that B vitamins can slow the deterioration of brain regions affiliated with Alzheimer’s disease and cognitive decline “by as much as seven fold”. B vitamins lower homocysteine, which is a naturally occurring, sulfur-containing amino acid found in blood plasma. The study found that this benefit of B vitamins was effective in people with high homocysteine levels. Additionally, in an initial study published in 2010, researches showed that a high-dose B vitamin treatment consisting of folic acid (vitamin B9), vitamin B6 and vitamin B12 slowed brain shrinkage over a 2 year period. The new study took that research a step further by focusing on gray matter regions of the brain, such as the medial temporal lobe, that are vulnerable to being affected by Alzheimer’s disease.
2013 RESEARCH: Preventing Alzheimer’s disease-related gray matter atrophy by B-Vitamin treatment http://www.pnas.org/content/early/2013/05/16/1301816110.abstract?sid=2271acac-0511-434f-8a57-b911b71558af
2010 RESEARCH: Homocysteine-Lowering by B Vitamins Slows the Rate of Accelerated Brain Atrophy in Mild Cognitive Impairment: A Randomized Controlled Trial http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0012244