[sipefree]

You fail to account for the variables involved in "calories out".

Metabolism is controlled in a large way by hormones. For example, extremely undernourished people will slow their metabolism way down in order to preserve what fat reserves are left. A diet that significantly increases blood sugar will, in many people, cause a high insulin response and cause fat to be stored and only glucose to be burned.

Essentially you're looking at this from the wrong way. For the body to grow in any manner, hormones are required (c.f. growth hormones during puberty). And for the body to have grown, excess calories must have been consumed. What forces people to eat so many calories that they grow in size is triggered by their hormones generally telling them that they are starving, even if they are not. See Metabolic Syndrome, Diabetes, Insulin Resistance, etc.

So yes, calories in/calories out, but you're not even considering _why_ those calories were consumed in the first place.

Disclaimer: I've been eating Low-Carb/High-Fat diet that brought my steadily worsening weight issue to a much more healthy level (91kg to 75kg) through control of my blood sugar and appetite.

[heretohelp]

>You fail to account for the variables involved in "calories out".

The study didn't fail to do so, so therefore I didn't.

>Metabolism is controlled in a large way by hormones. For example, extremely undernourished people will slow their metabolism way down in order to preserve what fat reserves are left.

This is a myth as far as western society is concerned. No one in western society not near-death from anorexia needs to concern themselves with this.

http://www.weightwatchers.com/util/art/index_art.aspx?tabnum...

> What forces people to eat so many calories that they grow in size is triggered by their hormones generally telling them that they are starving, even if they are not.

This is not true, you've been reading too much keto literature on leptin.

I say this as someone who is a proponent of low-carb diets as a way of promoting satiety and controlling caloric intake.

>So yes, calories in/calories out, but you're not even considering _why_ those calories were consumed in the first place.

I have a whole team of nutritionists working with us, as well as my own personal experience and research, I've gathered quite a bit of experience.

Let me lay out a few things for you.

Low-carb works, anecdotally (key modifier here), because it happens to push people into eating almost no empty calories. In a diet simply absent bread, sugar, and other empty calories, virtually everything you eat is contributing your satiety as well as your overall health.

That alone will allow you to eat far less and feel fuller. Taking it that much further and saying that the entire leptin hypothesis along with the keto diet usually associated with it is somehow responsible for weight-loss when that loss could be explained purely in terms of eating healthier in general, is unscientific and unproven.

Control for people who don't eat empty/junk calories versus people who stay strictly keto, and we'll have a better idea of what impact blood sugar and leptin have on the matter.

I don't deny that insulin resistance has a long-term impact on health, but I sincerely doubt it has much, if anything, to do with short-term weight loss.