If you sugar spikes from carbs, insulin stores it into fat.
No, that you need a calorie surplus to increase stored energy, whether in the form of fat or otherwise, isn't pseudo-science (the alternative is pseudo-science of the same sort as perpetual motion machines.)
And people trying to avoid a calorie surplus are not going to eat more sugar ("processed foods" perhaps -- I mean, lots of convenient high-protein, low-sugar, shelf-stable convenient foods are fairly highly processed from their raw forms. OTOH, I don't see a real problem with them, either. All "processed foods" are not created equal.)
> If you sugar spikes from carbs, insulin stores it into fat.
Right. But if you aren't maintaining a calorie surplus, you aren't going to gain stored energy whether in the form of fat or otherwise, because you're going to be using stored energy at least as fast as you are storing it.
OTOH, excess carb intake is often associated with a feeling of lethargy which discourages activity, so in addition to the calories coming in from that activity, that eating pattern can reduce calories going out. And lots of people have metabolic issues related to carbs which make excess carb intake a health problem for other reasons, so its definitely true that there are good reasons to be aware of carb intake for most people, and for people with particular health conditions related to carbs that's even more true.
But its not true that either weight or fat gain is unrelated to calorie balance.
http://www.webmd.com/diet/20120626/all-calories-not-created-...
That's what you just said. You're wrong, btw. Plent. Of morbidly obese and super obese people eat lots of fat.
For a non-obese person calories also don't matter because if you eat equal amount of calories using sugar, almonds or olive oil, the effect will be completely different
I've observed obese people. And, no, they don't all eat simple carbs.
> Why? They are addicted to dopamine,
You can't be "addicted to dopamine". Dopamine plays a role (or, more accurately, different roles) in various addictions, but isn't the thing to which you are addicted.
> they tremble and get depressed if they don't eat sugar and carbs.
That sounds a lot like hypoglycemia (possibly resulting from chronic hyperinsulinemia), which is a fairly well-established thing, unlike folk-psychology "carbohydrate addiction".
> They overeat, that's the reason they are obese.
This is the one sane thing you say: yes, weight gain results from "overeating", that is, a calorie surplus.
> For a non-obese person calories also don't matter
"also"? As you correctly note previously overeating -- eating an excess of calories -- is where weight gain comes from. That's true whether the person is or is not obese at the time.
Calories absolutely matter. Both for obese people and non-obese people.
you should start with basics then. If you think there is no sugar and simple carbs addiction, wow
http://www.webmd.com/diet/ss/slideshow-sugar-addiction
http://en.wikipedia.org/wiki/Sugar_addiction
>Calories absolutely matter
OKOK I agree that calories make you fat of course, but if you are not addicted to cookies, sugar and other carbs you won't over consume calories. Why would you overeat broccoli with olive oil? So in this case, you can eat oil and lard.