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Comment by fearface | Hacker News Reader

That’s a bit of BS. You don’t loose weight magically because of macronutrients. Bollocks.

You loose weight, because you burn your excess fat. Without restricting your intake, there is no reason for your body to burn your fat reserves and that’s why you won’t loose weight just with low carb and same total calories.

(You may loose some water, but not fat).

On a ketogenic diet, your body is constantly using fat as fuel, which makes it easier to eat less calories and be less hungry. Also ditching carbs prevents insulin spikes, which impact a lot how you feel and act.

I lost +30kg with restricting my calory intake by ~25% (calculated on the energy value of the fat loss per month) and keto helped me to not feel hungry and also skip a meal or two without any impact on my energy level.

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I don't think you can really dismiss macro-nutrient allocation as a factor. The metabolic pathways for fats and carbohydrates are just way different. For some reason people think that this stuff works like a gas tank, where all that matters is how much fuel you pour in, but the evidence clearly shows that what kind of fuel you pour in is incredibly important.

If you think about how incredibly complicated things like nutrients and proteins are, and how insanely complicated the body is, it makes sense. We've evolved so that we can eat almost anything, but that doesn't mean that we should eat anything. The evidence seems to point towards carbohydrates being something that should be eaten when there's a large energy demand and otherwise should be kept low.

Science says you're wrong: https://www.ncbi.nlm.nih.gov/pubmed/28765272

"risk for obesity is primarily determined by total calorie intake"

The macro nutrients certainly matter in the details, but not so much in the overall picture. It does mostly work like a gas tank, and the energy content in good is literally measured in [kJ].

Fat has a lot of stored energy, why on the planet, do people believe the body is able to create and store energy out of thin air?

And it exactly works the opposite way, the body will use the stored energy in the fat if there's not alternative.

> "Science says you're wrong"

Please don't use dismissive internet tropes like that on HN. It's of course fine to cite a study, but no single study is "Science".

https://news.ycombinator.com/newsguidelines.html

It really is like a gas tank. Just like everything else in the universe, we are regulated by the laws of physics. You can't move (live) without expending energy, and all energy put in must be transformed or stored. It's thermodynamics.

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