Eating less could help you remember more, researchers have found.
And swapping dessert for an after-dinner coffee could be good for your brain, as well as your waistline.
The news follows an Italian study into "calorific restriction" - the idea that near-starvation rations boost health and extend life. Scientists have long known of the phenomenon, but have struggled to work out just what it is about severely cutting calories that improves health.
Researcher Giovambattista Pani decided to focus on a protein called CREB1 that is known to be important to memory and learning.
In experiments on mice, he showed that cutting calories boosted learning - but only if they still were able to make CREB1.