The risk of developing Alzheimer's might be lowered by the consumption of a higher level of folic acid through diet and supplements, say researchers.
A study of around 1,000 elderly people found that those with higher than normal levels of the B vitamin are less likely to suffer mental deterioration.
It adds to mounting evidence that folic acid plays an important role in preventing or alleviating many disorders including heart disease and strokes.
Researchers at Columbia University Medical Centre in New York looked over six years at the diet and progress of 965 healthy people who had an average age of 75.
Around one in five, 192, developed Alzheimer's disease - but those with the highest intake of folic acid had the lowest risk.
Previous research has suggested that folic acid may improve the memory of people over 50 and cut the chances of developing Alzheimer's, but this is the largest study to find a reduced risk.
Source - Daily Mail