One more reason to follow a Mediterranean diet – it could prevent the brain from shrinking in old age thus helping to slow down or prevent cognitive decline.    A new study published in the journal Neurology suggests there is an association between consuming foods typically consumed within a Mediterranean dietary pattern and a reduced amount of brain shrinkage.  Several studies have already demonstrated that following a Mediterranean diet can result in having better thinking skills, a reduced risk of Parkinson’s disease and Alzheimer’s disease.