A recent study conducted at Oregon Health and Science University has shown that elderly people with higher blood levels of four notable vitamins exhibit better mental functions than those lacking in the same vitamins. 104 individuals averaging 87 years old were given blood tests and brain scans. Those with higher levels of omega-3 fatty acids, vitamin B, vitamin C, vitamin D and vitamin E scored higher on cognitive tests, and had a larger brain volume than those people with the lowest levels of such vitamins.
Specifically, the beneficial Omega-3 fatty acids were linked to better cognitive function and healthier blood vessels in the brain, while higher levels of trans fats were linked to impaired mental ability and smaller brain volume.
While the study could not prove that the presence of these vitamins in the bloodstream would decrease the risk of dementia, it makes a clear case for eating fresh and staying away from trans fats – fish, fruits and vegetables all contain these vitamins in abundance.