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.
http://en.wikipedia.org/wiki/Reward_system
http://en.wikipedia.org/wiki/Dopamine#Animals
http://www.slate.com/articles/health_and_science/science/201...
I would also point out that fat people very rarely eat much above their natural metabolic burn rate. Instead, people who are presently gaining weight are doing so. Someone who eats an extra 500 calories per day over what their body demands (call it one, one and a half grilled cheese or PB&J sandwiches) gains 1 pound per week, and has gained 52 pounds after 1 year. A fat person who has a stable weight is not eating excess food. The reason you see them eating more food than you, is that when we gain weight, our body demands more energy to feed that body mass; Losing a pound at 130lbs weight requires a similar amount of discomfort & deprivation as losing a pound at 330lbs weight. For them to be feeding a body two and a half times as large on a similar diet as a stable-weight 130lbs person, would represent a very rapid, very uncomfortable weight loss, a starvation diet.
Usually, people gaining weight put on pounds slowly; Gaining 26 lbs per year is a 250 calories per day excess. They're only eating 10 or 15% more than they should be to maintain their weight. This is not the behavior of an out-of-control addict chasing the dragon, but a largely functional feedback loop responding to a slight artificial bias in favor of extra food, or less exercise, than it's naturally tuned for (or at least, than it was subjected to previous to the obesity epidemic).