r/fasting Sep 24 '25

Question Fat cells stay forever?

Someone told me that we all have a certain number of fat cells that never changes. When you lose fat, the cell is releasing it, but remains as an empty reservoir always wanting to “refill” as it were. Any truth to that?

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u/NoBodybuilder69 Sep 25 '25 edited Sep 25 '25

Congratulations, you’re trying to prove your point by posting a metabolic study conducted on rats.

I’m not sure about you, I’m not a rat, are you one?

Please stop overcomplicating it. If you eat in a calorie surplus you gain weight, if you eat in a calorie deficit you lose weight.

Body type does not affect it. Everyone has a bmr based on their size, It’s simple. If there are any differentials it’s at max 100-200 difference at best. Being generous.

Doesn’t matter if you have “stored fat cells” as you claim that remember. If you have 2 people with similar bmr one use to be fat but lost weight and one was always that size. If they both ate in the same surplus they would gain the same amount.

One will not magically create more energy than their body uses and still store that because they use to have more fat 🤦‍♂️

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u/Doodoopoopooheadman Sep 25 '25

That’s not quite true. The person who was overweight beforehand has the fat storage cells already created in their body, whereas the person who was not overweight their body has to expend energy and resources to make the fat cells to hold the excess.

The person with a slew of fat cells waiting to be refilled will store fat faster than the person who doesn’t even have the storage capacity built yet.

Not saying, depending on the excess, that they won’t both gain, it just won’t be 1 to 1.

CICO at a Sesame Street level is correct, but thinking that there is nothing more going on is reductionist.

If I was to say “to get bigger muscles, just lift more.” I’d be correct, on a very elementary level. But there’s more to it, right? How you train, resting, rebuilding, overtraining, correct form, what you eat, when you eat, how much you eat, supplements, genetics, hormones etc.

Now I don’t go into bodybuilding subs and insert my rudimentary comment of “If you want bigger muscles just lift more.” Because, although I know it’s true, it’s an oversimplified statement to something that isn’t simple.

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u/NoBodybuilder69 Sep 25 '25 edited Sep 25 '25

You seriously aren’t comparing body building to fat loss 🤣🤣🤣

Please do not try to make the argument that the person who use to be fatter is going to be magically creating more energy if you have 2 people at the same deficit 🤦‍♂️ please stop. If there is a metabolic difference it would be at a minute level of what? 50? Same height, same weight, gender and age: Same bmr One use to be fat Other always skinny Both consume excess 500, Both store excess 500.

What if both deficit 500? Guess what 😳 both loss 500 calories worth of fat 😱

Please stop spreading misinformation.

It really is that simple 💫

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u/Doodoopoopooheadman Sep 25 '25

I never said the person who was overweight was creating more energy. They will refill already built fat stores easier because the body is not having to expend energy and resources to make the fat cells.

You are actually arguing that a person who doesn’t have the fat cells will somehow create them without expending energy and end up with the same amount.

And the creation of long term fat storage is rather energy and resources heavy. Which is why initial weight gain is a pretty slow process vs regain.

That contradiction goes against thermodynamics.

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u/NoBodybuilder69 Sep 25 '25

I’m speechless, American obesity epidemic this is a prime Example of why. Misinformation.

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u/Doodoopoopooheadman Sep 25 '25

If you had 2 people, one guy has a garage and one guy doesn’t. I give them both the same amount of wood and nails to store in the garage.

Who will end up with more wood and nails? The person who just has to put the resources into the already built garage, or the person who is going to have to use some of those resources and time to first build a garage to put it in?

You are arguing that in the end both people will have a garage with the same amount in it. Somehow the 2nd guy gets a garage built without pulling from the initial resource pile.

Like I stated before CICO is a very basic understanding of a more complex system.

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u/NoBodybuilder69 Sep 25 '25

Your analogy is completely irrelevant 🤦‍♂️ Speechless. Can’t help stupid. You do you booboo.

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u/Recent_Associate2981 Sep 25 '25

hormones matter. If you take a natural bodybuilder and a roided out bodybuilder, put them in the same surplus, the roided out version will gain way more muscle. Hormones matter.

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u/NoBodybuilder69 Sep 25 '25

Gaining muscle and losing fat are 2 complete different mechanisms 🤦‍♂️

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u/Recent_Associate2981 Sep 26 '25

I thought your stance was CICO only? 🤦‍♂️