“These foods are often nutrient-dense, providing essential vitamins, minerals, antioxidants, and phytonutrients that ... a ...

There’s no way to tell, however, if this was down to the high-fat nature of these foods – crucial for supporting brain function – or if it was down to the phytonutrients themselves.

“Modern diets, especially those high in ultra-processed foods rich in refined sugars and flours, tend to be low in phytonutrients,” says Los Angeles-based nutritionist, Simon Hill, who heads ...

Phytonutrients are substances ... are a preferred brain food, providing a slow, sustained supply of glucose. They take longer to metabolise and are high in folate, the memory-boosting B vitamin.