Nutritional diagnosis and management are important aspects of general practice. This information, which is presented in two parts, offers the general practitioner a practical framework and an approach to nutritional advice. Part 1 outlines the clinical conditions and principles involved in nutritional diagnosis with a management approach to macrovascular disease and obesity. Part 2 covers protein malnutrition, eating disorders, osteoporosis, nutrient toxicity, cancer, inherited metabolic disorders, nutrient deficiency and diabetes mellitus. This material is based on a seminar organised by Kellogg (Australia) Pty Ltd in Melbourne in 1989 and the material is reproduced with the kind permission of Kellogg (Australia) Pty Ltd.