On the one hand, CICO is obviously true, and any explanation of obesity that doesn’t contain CICO somewhere is missing an important dynamic.
But the reason why I think CICO is getting grilled so much lately, is that it’s far from the most important piece of the puzzle, and people often cite CICO as if it were the main factor. Biological and psychological explanations for why CI > CO at healthy BMIs (thereby leading BMI to increase until it becomes unhealthy) are more important than simply observing that weight will increase when CI > CO. Note that this can be formulated without any reference to CICO, although I used a formulation here that did use CICO.
On the one hand, CICO is obviously true, and any explanation of obesity that doesn’t contain CICO somewhere is missing an important dynamic.
But the reason why I think CICO is getting grilled so much lately, is that it’s far from the most important piece of the puzzle, and people often cite CICO as if it were the main factor. Biological and psychological explanations for why CI > CO at healthy BMIs (thereby leading BMI to increase until it becomes unhealthy) are more important than simply observing that weight will increase when CI > CO. Note that this can be formulated without any reference to CICO, although I used a formulation here that did use CICO.