I lied. I’d like to add this. @OldDoug I think you’re letting your knowledge and understanding of CIM influence your thinking about CICO. The nuances and subtleties you talk about above derive from CIM not CICO or even EBT. I think you are conflating the two. For the less technical of us: CIM means ‘Carbohydrate Insulin Model’ or more commonly the hormonal theory of obesity; EBT means ‘Energy Balance Theory’ or more commonly calories in calories out, ie CICO.
My understanding of CICO - the common, popular dietary weight loss regimen - is as follows. And I ask anyone who thinks I’ve got something wrong to point it out. Many of you have done CICO multiple times, so no doubt you have first-hand knowledge! According to CICO you gain weight because you eat more energy - calories - than you use. If you want to lose weight then simply eat less and use more energy. Eat less move more. It’s thermodynamics! If you’re not losing weight it’s because you’re eating too much and not exercising enough. It’s science - if it doesn’t work it’s your fault. You’re cheating. You’re not doing it right. Or you need a ‘tummy tuck’. After a year or two of eating a daily caloric deficit you successfully lose those 200 extra pounds of fat - hey presto, see CICO works! If you then start to eat more normally again because you’ve lost all that fat, why continue eating an energy deficit… oops! you regain the weight and more. You did something wrong. After all CICO worked! You lost 200 pounds. Now you’re eating too much and not exercising enough.
CICO - the common dietary regimen - does not acknowledge that energy from different macro sources produces diffferent metabolic results. Instead, it claims a ‘calorie is a calorie is a calorie’. We know for a fact that’s not true and the Fineman/Fine article I linked above links to multiple studies that show it’s not true. We know for a fact that insulin controls fat storage and that elevated glucose triggers insulin to store energy. Yet CICO tells us to reduce fats and eat more carbs. A host of hormones and enzymes control what energy does and where it goes and whether it’s lost or stored. CICO says nothing about any of it. Just gross energy in and gross energy out. Easy peasy.
All of the nuance and subtleties Old Doug attributes to CICO in his various responses above do not exist in the CICO of the real world, only in his imaginary CICO. The perfect CICO that incorporates all the good stuff in the hormonal theory of obesity. Any citations to support your claims?