Beta Carotene & Memory (2007)

This study investigated beta carotene & memory. In an 18 year study of over four thousand middle-aged to elderly men, those who took 50mg of beta-carotene on alternate days scored much better in tests of general cognition and verbal memory than those who took a placebo.

Grodstein F et al., ‘A Randomized Trial of Beta Carotene Supplementation and Cognitive Function in Men: The Physicians’ Health Study II’. Arch Intern Med. 2007 Nov 12;167(20):2184-90.