Yes I agree that being lean doesn't mean one is healthy..anecdotally I have known people that have been fat their whole life and have lived into their 90's pretty healthy..never worked out and were relatively happy. I have known people that are lean and wear sweatshirts when it is 100 degrees out when they are in air conditioning are very negative and angry and depressed people..I see fat children that are happy calm and precocious and I see healthy looking lean children that are hyper, defiant, non focused and always crying etc. we have to define what it means to be healthy? The word itself means different things to different people..so in order to discuss intelligently we have to come up with an agreed upon definition of the meaning of health