I wonder as well, Judith, if for much of what you describe as being based on weight and size are actually significant non-weight based motivations. Things such as avoiding dementia and diabetes, having a lot of energy to climb those fells (how wonderful!), feeling strong and so on. I would say that those things depend as much on the quality and quantity of what you eat, as much as being slim or achieving a particular number on the scales. Just a thought!