Well... Is not a caveman theory... Is actually kind of a new topic in nutrition...

Behavioral factors including physical activity and eating behaviors likely also play a role, specifically to prevent weight regain

This paper is also not about the starvation theory, this is about fasting.

This paper even address the first law of thermodymics, which you really do not seem to understad. Bodies do not use 100% of the energy in your food, the usaged percentage is variable and what is not use you just shit, conserving the 1st law.

No where have I said that, I've literally pointed out multiple times now, that people who gain weight, don't magically do so with less calories. You all continue to spew HAAS bullshit about how people can magically gain weight on less, as you do just in the next line here.

And true, people go back to eat too much, but you can't assure that 100% of the cases of weight regain after diet are coused because of that, there are:

Yes...yes you can. Holy shit, you cannot create more mass from less. Again, I'm not the one that doesn't understand physics here.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6082688/

Indeed, a recent scientific statement from the Endocrine Society concludes that “the answer to the question, ‘Is a calorie a calorie?’ is ‘yes.’”1 In other words, diets high in added sugar or other processed carbohydrates should have no special adverse effects upon metabolism or body composition, after considering total calorie consumption.

Are you even reading the papers your linking here?

This is quite the hot topics between nutrition experts, but I'm guessing you already know that, since your seem to belive to already have analysed all possible information about this ultra-complex topic.

There is only one way to gain weight, eat more than your body needs. This is not rocket science and all studies you have linked so far point this out. None of them have stated in any way, that people eating less than their bodies need magically gain weight.

Yes, CICO works most of the time if you count well enough, but there are somw cases where your hormones will just fuck you over.

No, thats still eating to much.

I really can't tell if you're trolling or if you reaaaaaaallyyyyy think you know what the 1st law actually means but are not capable enough to see that open systems are not bound by it in the way you think they are.

I... don't know if you're trolling either at this point, you clearly don't understand any of the articles or papers on this topic. Thermodynamics is not going to magically change because you think you're body is somehow different because you gained weight.

https://bookdown.org/asvn90/Understanding-Thermodynamics/the-first-law-for-open-systems.html Take a look at chapter 5.2, it explains how the 1st law applies to open systems -like your body, in case you don't get why I am talking about open systems-

What's with you all thinking I believe that your body is %100 effective at using calories....the fuck is with you.

You can shit more or less, depending on how your body process food. I hope that one is simple enough for you.

Yes, totally, that's why people get fat, because they can't shit like skinny people.

Fucking stop. CICO is physics, you're eating to much if you're gaining weight. PERIOD.

Also: maybe is easier to understand https://www.youtube.com/watch?v=lPrjP4A_X4s

Ah yes a YT video, is this one going to explain how I'm wrong....and that obesity comes from people eating "normal" and it's not their fault that consuming 4.5k calories a day made them obese...

I feel like I'm arguing with a climate denier.