Researchers have found that taking supplements has a beneficial effect on memory and may work by increasing efficiency of brain cells.
The body needs 13 vitamins to function properly and maintain health. Vitamins A, C, D, E and K and the eight B vitamins each have specific job in the body.
Vitamin C keeps cells healthy, D regulates calcium and E maintains cell structure, while the B vitamins, including folic acid, have a wide range of functions.
A study at Monash University in Australia looked at whether multivitamins can improve cognitive abilities, and involved 3,200 men and women, the Daily Mail reported.
The results showed that those who used a multivitamin had improved ability to recall events or information.
The second study at Australia's Swinburne University looked at women aged over 64 who had complained about poor memory.
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Results showed that those taking a multivitamin supplement had improved rates of electrical activity in the brain while carrying out a memory test.
Researchers believe it may work by increasing nerve cells' efficiency and improving memory.
"The evidence is still limited but the studies hint at some possible beneficial effects. Optimal brain function depends on an adequate level of all of the vitamins. Multivitamins are likely to be more effective because people have different deficiencies," Professor David Kennedy, of the Brain, Performance and Nutrition Research Centre at Northumbria University, said.