Taking multivitamin supplements may improve memory in older adults, according to a study published in The American Journal of Clinical Nutrition. The randomized, controlled trial involved 3,562 individuals 65 and older that were given either a placebo or a daily multivitamin supplement and evaluated after one year. Those that took multivitamins had better memory performance compared to the placebo group. While further research is needed to understand how and which vitamins affect memory, the study suggests that these supplements are safe, accessible and beneficial for older adults looking to maintain cognitive function.