Undoubtedly, we who where children in the 1940s did have a balanced diet because we never could have had too much of anything. Rations in fact gave us the right amount for proper nourishment and were supplemented by orange juice and cod-liver oil and free school milk. What was different, as Greatnan says was that most of us lived in homes where one or both parents smoked; that viruses such as polio and measles, which are now controlled by vaccines, still accounted for much ill-health and even death of children; that the streptococcus bacterium which caused scarlet fever, which is rare now because of antibiotics, also accounted for serious (or fatal) illness. I spent three weeks in hospital with pneumonia which, only a few years later would have been treated at home with antibiotics. I very much doubt that there was more type 2 diabetes at that time though. That is a disease of over-consumption, by and large, although there are exceptions. As a child, I seem to have spent far more time in the fresh air than my grandchildren now do with their computers and tablets to keep them engrossed.