Speaking of folic acid, and therefore B vitamins....

Vitamin B 'puts off Alzheimer's'

A new study suggests high doses of B vitamins may halve the rate of brain shrinkage in older people experiencing some of the warning signs of Alzheimer's disease.

Brain shrinkage is one of the symptoms of mild cognitive impairment, which often leads to dementia.

Researchers say this could be the first step towards finding a way to delay the onset of Alzheimer's.

Experts said the findings were important but more research was needed.

Let's hope so. It would be a cheap way to help prevent a horrible disease that robs not only the memory but also the spark of personality in so many people.