My brother is a dietitian and I remember how he would come home every night while he was training and sing the praises of "fish and broccoli" as a nutritious meal. It's stuck with me all these years. Instead of navigating kilojoule counts, diets and an ever-changing sea of labels, there are a few core principles that always hold true for healthy eating: cook using fresh ingredients instead of buying processed foods; eat a wide variety of foods, especially vegetables; eat everything in moderation.