We are living longer, so more people have dementia. Fruit and vegetables can cut dementia by over 30%. Flavonoids in food give our brain oxygen. Flavonoids give food like blueberries, oranges, peppers and strawberries their colour. A researcher said colourful food with flavonoids is good for long-term brain health.

Researchers studied 77,000 people for 20 years. People who ate more flavonoids were 38 per cent less likely to get dementia. Older people could feel four years younger. A researcher said flavonoids can really help our thinking skills as we get older. He said: "Adding colour to your plate may lower the risk of cognitive decline."