This updated edition is a guide to food and nutrition for the 21st century and contains research from authorities on many aspects of food and diet. Topics covered in the book include: how to construct a balanced diet; the "superfoods" which can protect against long-term illness; 80 ailments caused or cured by diet; what to eat at different times of your life; the facts about GM and organic food production; research on food allergies; the healthiest cooking methods; and how to slim safely.