Drinking beetroot juice before exercise could take years off your brain.
Combining the drink with exercise strengthens certain regions of the brain, making it appear more youthful and potentially preventing the organ's decline.
This finding could help people who are at-risk of brain deterioration to remain functionally independent, such as those with a family history of dementia.
Beetroot juice's power likely lies in its nitric oxide content, which both increases blood flow to the brain and improves exercise performance.
Study author Professor Jack Rejeski, said: 'Nitric oxide is a really powerful molecule. It goes to the areas of the body which are hypoxic or needing oxygen, and the brain is a heavy feeder of oxygen in your body.
'Compared to exercise alone, adding a beetroot juice supplement to exercise resulted in brain connectivity that closely resembles what you see in younger adults.'