Some do not get chubby/fat, when eating what others do who get chubby/fat - not talking about obese here. Obese has a lot to do with refined foods, as far as I know.
But we were talking about losing fat. From the day we wore animal skins our body is focused on being very economical, it uses tricks to not lose fat. That, in those days, could mean the difference between surviving a food shortage or dying. When the body loses fat it is set on getting back to the previous weight, by slowing down all sorts of processes to save energy so that more calories will be stored as fat, and by changing the hormones secreted. Fat cells for instance make the hormone ‘leptin’, that tells your brain you have had enough food. When losing fat you have less leptin: you feel hungry. So when losing weight you have more appetite and burn less than before when being fat.
There are other hormones and factors as well.
Doing a simple calculation of calories is simply not the whole story.
You're dodging the question.
Doing a simple calculation of calories is simply not the whole story.
No one is saying that doing math alone is going to help you lose weight.
I'm struggling to appreciate how anyone with the slightest sense could possibly deny that eating more calories than you burn will, inevitably, result in weight gain - all other things being equal.
To me, it's like explaining to people that if you jump into water, you're going to get wet - and hearing them say "but are you not following the latest scientific evidence to suggest there are other factors at play?".
I mean… so?
I can set it up in any scenario that will force what I'm saying into the undeniable. Like, if you stopped eating entirely for a month - what do you think would happen?
Have you looked at photos from concentration camps during WW2? Did you notice how every…. single… prisoner was extremely thin and skeletal?
Do you think the latest scientific evidence changes that kind of reality? Because I don't.
In any case, if you really want to believe that other factors play a larger role than burning more calories than you consume - then so be it.
Do note that I'm not denying other factors are at play - or that genetic differences can change how our metabolism works. That's why I would never claim a simple calculation will always result in the same thing for the same people.
My claim from the very beginning has been that if you burn more calories than you eat - you will lose fat. But it's not the same math for every person in the world.
With that said, you can establish some very, very reasonable estimates for 95% of the population using rather simplistic formulas.
Again, you can Google "weight loss" - and you'll find this extremely basic concept over and over again. Even in the modern age of endless dietary alternatives - they all tend to mention that calories are key in the end.
This is based on endless empirical research and years of experience - from pure scientists to extremely successful life coaches.
They all seem to agree with me.
In this case, there really isn't much of a mystery - unless you want to drown yourself in minutiae to avoid looking at cold, hard facts.
Your research article involving mice doesn't change anything about this. Again, I've never said every person has the exact same metabolism. I've known people who "seem" to be able to eat anything they want without gaining weight. Well, that's until you actually pay attention to what they're doing in life.
There's not a single human being on Earth who can go without food for a month and gain fat.
Meaning, I'm 100% correct - and there's no article that you can find to dispute it - not even a bullshit article.