Book excerpt: This is the ultimate guide to getting your brain in tip-top shape and keeping it healthy via the foods you eat. With a worldwide ageing population, and cases of dementia as well as severe depression and anxiety alarmingly on the rise, the need to look after your brain optimally has never been more important. It has now been proven beyond a doubt that it is possible to improve focus and memory, reduce stress and anxiety, and think more clearly simply by enjoying a diet rich in the right nutrients. In Part 1 of Feed Your Brain, Delia takes you through her 7-step program, simply and clearly explaining the science behind how the brain works, and showing how vitamins, minerals, fats, oils, carbohydrates and proteins affect brain function. Part 2 of the book features delicious, quick and easy recipes that can form the basis of your new diet while also providing you with inspiration to come up with your own ideas in the kitchen.