[E6300]

Well, fat certainly is worse than carbs, as far as weight loss is concerned. Fat contains twice the calories per gram compared to carbohydrates or protein, that's why things like cheese and oil are a big no-no if you're trying to lose weight. Butter is alright as long as you don't take a big ol' chomp out of a stick.

[khuey]

That diets like paleo and keto work is pretty strong counter evidence to this position.

[specialist]

Responding to E6300:

You are mostly correct, in terms of effectiveness.

Also good are exercise (building lean muscle mass), reducing carbs (a la keto, paleo), and intermittent fasting (keto).

There are other health benefits to cutting carbs, especially HFCS: reducing obesity, heart disease, diabetes.

Just think of the strategies as complimentary. And do what works for your body (eg consuming too much potassium can worsen some heart conditions).

[E6300]

The only diet that works is caloric restriction. You can follow any fad diet you want, but if you don't expend more calories than you ingest you're not going to lose weight. Replace all the carbs in your equilibrium diet with the same amount of fat per mass and you're going to start gaining weight. It's as simple as that.

[jonnathanson]

You're missing the point of the low-carb theory. It's not claiming that you should eat above a deficit. It's arguing that a pure energy-deficit view of dieting is wildly impractical. Longitudinal evidence of dieters over 2-20+ year windows will routinely point out that people cannot stick to calorie-deficit diets, cannot estimate calories, etc.

Modern nutritional science is also showing that the way food is digested and metabolized in the body is strongly influenced by a complex hormonal interchange -- and whether organs like the liver or the gut are predominantly responsible for macronutrient metabolism has a significant effect on, for lack of a better word, "effective calorie counts" in foods. The macronutrient composition of what we eat clearly affects our hormonal reaction, which clearly affects feelings of hunger and satiety. To ignore these feedback loops in favor of strict energy-deficit reductionism is a bit like saying that anyone not programming in binary is wasting his or her time.

[jshevek]

Yes, this is a great post. I've known many in the keto community who have a dismissive attitude towards the calories in calories out mentality. Too often they simply say "CICO is nonsense!" without explaining what they really mean.

Sometimes science literate ppl think these ketoers just don't understand the 2nd law of thermodynamics, but that's not the point. Its true that the 2nd law determines weight loss, but changing your hormonal response is how you really achieve a healthy lifestyle.

[jshevek]

Not everyone changes their diet exclusively to lose weight. Some people would rather prevent medical issues, and or increase their well-being. This fixation on the calories in - calories out ignores all of this and is detrimental to people's health.

Further, many people would rather not have to track their calories everyday for the rest of their lives in order to maintain a healthy diet. They'd rather condition their body to prefer healthy foods, and to prefer healthy quantities of healthy foods. To do that you have to look at the source of the calories, not just the amount of calories.

[hossbeast]

This position is specifically addressed in the article. The author believes it's hormonal, instead.

[jrimbault]

You're wrong, but to illustrate why: when people talk about cheese, often you'll think of France -> https://en.wikipedia.org/wiki/French_paradox

It's not strictly speaking a rebuttal, but it illustrates a point quite clearly, fat is not the culprit.

[E6300]

I'm talking about weight loss, not overall health.

[jrimbault]

French people are also less obese and less overweight than NA people.

[lultimouomo]

https://en.wikipedia.org/wiki/Epidemiology_of_obesity#/media...

Italian people are among the least overweight people in the OECD countries, and have a heavily carb based diet. (I think the same applies to Japanese and Korean, but I think there could be a prevalent genetic factor there.)

That's not to say that fat makes you obese, just that carbs, per se, don't. Eating too much does.

[jrimbault]

Oh yes, one meal per day is enough. I don't move enough to justify more.

[cschmidt]

We all learned that fats are bad in school, along with the food pyramid. Sadly, almost all you learned about losing weight was wrong. If you're curious, read one of the books by Gary Taubes, the author of the NYT op ed. "Why we get fat" is a good read. If you really want to lose weight, keto (high fat/low carb/moderate protein) is a great way to go (I lost 60 pounds).

[otabdeveloper1]

Gasoline is more caloric than fat, but subsisting on a diet of gas won't make you obese, quite the opposite.

[qbrass]

Which is why you should subsist on a diet of biodiesel.

[SmellyGeekBoy]

Anecdotal I know, but I have plenty of friends who have lost weight on a high-fat, low-carb diet.