To me, it's like saying that poverty can be solved by people either working more or spending less. Well, perhaps, but it's not the core of the issue. Absolutel

To me, it's like saying that poverty can be solved by people either working more or spending less. Well, perhaps, but it's not the core of the issue. Absolutely true. CICO is an over-simplification and almost useless to many people who suffer from obesity. It also ignores that most people do better concentrating on the CI side of the equation (increasing CO is rarely enough for an obese person to permanently reduce their weight). Understanding the fundamentals of calories, the broader aspects of nutrition, glucose response (post-exercise, daily rhythms, etc) - if you’re desperate it can be quite overwhelming. Telling an obese person to “eat less” or “exercise more” isn’t any more helpful than telling them “try harder” or “don’t be a fatty”.