The research is published in the Annals of Neurology.

BBC: MS 'may be four different diseases'

Looking at 2, 250 individuals from the Washington Heights-Inwood Columbia Aging Project, researchers found a 40 percent lower risk among those who stuck to this diet, scientists reported in the Annals of Neurology in 2006.

CNN: Mediterranean diet may help prevent dementia, study says

This idea is supported by a study published in April in the Annals of Neurology, which showed that mice without plaques, but with floating beta-amyloid, were just as weakened by the disease as mice with both.

ECONOMIST: Alzheimer's disease