Earlier quoted context omitted.
I'm overweight because I eat too much. Eat caloric surplus, gain weight. That part isn't complicated. Why I eat too much is another question...
It's funny too, because I have perfectly logged data showing that the weeks I eat fewer than about 1800 calories reliably, (because I have an incredibly sedentary lifestyle) reliably and predictably lower my weight. I've literally got a science experiment in my own body that shows reducing calories in, without reducing the actual design of my meals, reduces my body mass. I'm willing to accept that there are some mino…
There's already a lot of uncertainty when most people measure their calories (very few people actually weigh their food) and this just adds another layer of uncertainty. I have a feeling those all combine to make it inaccurate enough in practice for some people to claim the CICO model doesn't work.