However, they did say “existing evidence suggests that regularly eating more vegetables, fruits, berries, fibre-rich foods, fish, and nuts” in addition to limiting highly-processed foods “may help support healthy brain ageing and preserve cognitive function over time”.
Article source: https://www.huffingtonpost.co.uk/entry/food-drink-healthy-brain-ageing_uk_6a57487ae4b0540b8c7ba6e8