Studies showing that deficiency in Vitamin B12 leads to brain shrinkage

Please read this important article by Dr. John Douillard, one of the top Ayurvedic pratitioners talks about how deficiency in Vitamin B12 can lead to a shrinkage in the brain that can cause dementia and other diseases. He also states that if you are overweight around the gut is an indication of a compromised digestion. Check it out:

http://www.lifespa.com/article.aspx?art_id=138