I also say, to whatever readers may care, the reason I belabor this point so much is that obesity related health issues have a massive effect on QOL, public health and personal mental health. I say this having grown up in the southern US, having obese family, having my own fitness / weight loss problems, having seen gangrene diabetic foots with my own eyes. I know vividly what it looks like for someone you love to be heavy, miserable specifically because theyre heavy, and totally hopeless that “they just can’t lose the weight”.
Throwing information out like this (w/o source and at best poorly replicated), that CICO is useless because of digestion rate, is incredibly dangerous because it falsely legitimizes that hopelessness. It traps people. And it maybe only applies in <1% of cases, where you have not just obesity but also compounding, very specific digestive issues. The opposite is also true — you don’t just drink coffee to knock off enough cal absorption to make a diff — you take laxatives you don’t need and have extremely abnormal, frequent BMs.
Anyone and everyone can lose the weight. It’s just CICO. You gotta figure out your input and output to account for the minor individual variances, and lock in a lifestyle to do it. But it’s just CICO at the end of the day.