As someone who was trained in the clinical sdentific tradition it took me several years to start to appreciate that food was more than a collection of nutrients, and that most people did not make their choices of what to eat on the biologically rational basis of nutritional composition. This realiza­ tion helped tobring me to an understanding of why people didn't always eat what (I believed) was good for them, and why the patients I had seen in hospital as often as not had failed to follow the dietary advice I had so confidently given. When I entered the field of health education I quickly discovered the farnaus World Health Organization definition of health as being a state of complete physical, mental and social well-being, and not merely the absence of disease. Health was a triangle -and I had been guilty of virtu­ ally ignoring two sides of that triangle. As I became involved in practical nutrition education initiatives the deficiencies of an approach based on giving information about nutrition and physical health became more and more apparent. The children whom I saw in schools knew exactly what to say when asked to describe a nutritious diet: they could recite the food guide and list rich sources of vitamins and minerals; but none of this intellectual knowledge was reflected in their own actual eating habits.