This will include eating at least five portions of fruit and vegetables every day, choosing wholegrain versions of rice and pasta, and limiting red and processed meat.
As for sweets, chocolate and cakes, these should be eaten in small amounts and less often.
New research, documented in Ageing Research Reviews, found an association with leading a purposeful and meaningful life and a reduced risk of dementia.
Lead author Dr Joshua Stott, from University College London (UCL), commented on the findings.
