Folic acid boosts brain power

Researchers from the Netherlands have shown that supplementing the diet with folic acid can help boost brain power in the over-50s. In this three-year study, those taking 800 micrograms of folic acid per day performed significantly better in a range of mental agility tests than those taking a placebo. The government recommends 200 micrograms of folic acid per day for adults but says most people can get enough folic acid by eating a varied and balanced diet, Folic acid is widely available in a veggie diet; good sources include broccoli, Brussels sprouts, peas, chickpeas, yeast extract and brown rice. 

Durga et al., 2007. Effect of 3-year folic acid supplementation on cognitive function in older adults in the FACIT trial: a randomised, double blind, controlled trial. Lancet. 369 (9557) 208-216.