My question is once this procedure has been completed and say the person really got into some heavy cardio and thus were burning a lot of fat would the body be able to burn the fat that was moved to the buttocks or does it not have the associated blood vessels to enable this?

I’m not even sure if that’s how lipids are metabolised, but I assume it’s through the blood.

  • Andy@slrpnk.net
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    5 months ago

    Hi. I’m not a doctor, but I can opine as a biologist.

    The transplanted cells have blood vessels, because all cells need a supply of oxygen to avoid expiring. If they didn’t have a supply of blood, they’d quickly turn necrotic.

    When you deplete your short term energy stores, the body converts fat molecules within fat cells into sugar, then shuttles those through the body in the blood stream.

    The body doesn’t draw on fat stores within the body in a totally even way, so I don’t know how quickly it would draw from the transplanted cells, but it works presumably still burn fat from these cells when needed.

    And the reverse is true as well: when excess sugar is available, the body would generate new fat molecules to fill those cells, and if necessary make new fat cells as well.

    • dependencyinjection@discuss.tchncs.deOP
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      5 months ago

      Thanks.

      I feel a little stupid now, as it’s obvious that it would die if it didn’t have a blood supply.

      So when they’re transplanted they’re going to connect some blood vessels. I am not understanding how the cells are still able to know when to turn fat into glucose, but again I’ll assume it’s done through the blood with an enzyme or something.

      I think you’ve answered the main question though showing it can use those stores. Much appreciated.

      • Beryl@lemmy.world
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        5 months ago

        Fat is usually stored in the body in the form of triglycerids. When fat is used, it’s usually not turned into glucose, but rather into fatty acids, that are then released in the blood and reach the cells that need extra energy, where they are used by the mitochondria to power said cells. The signaling that triggers this is in fact done by a bunch of hormones that do indeed circulate in the blood to reach the cells specialized in storing fat, called adipocytes.

        Depending of what triggers the transformation of fat into fatty acids( a process called lipolysis), those hormones could be insulin, epinephrin, growth hormone, etc.

  • GenderNeutralBro@lemmy.sdf.org
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    5 months ago

    I have no knowledge of Brazilian Butt Lifts specifically, but here is some related information about how fat works in general, which I hope is a good starting point:

    Fat cells don’t die easily. They just shrink. See: https://news.yale.edu/2015/03/02/study-new-fat-cells-are-created-quickly-dieting-cant-eliminate-them

    When performing skin grafts, fat cells retain the characteristics of the original skin location. For example, here is a paper that shows a soldier who had a skin graft from his stomach to his hand, and later developed a kind of “beer gut” on his hand. Content warning: graphic images of open surgery in related articles section if you scroll down. If you are even a little squeamish, do not scroll down. https://journals.lww.com/dermatologicsurgery/citation/2006/03000/does_transferred_fat_retain_properties_of_its_site.12.aspx

  • kevincox@lemmy.ml
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    5 months ago

    TL;DR is yes, but typically slowly. So the BBL won’t last forever but for most people it can last quite a while.

    I have seen claims from 5-10 years. But it will depend on your lifestyle. I have seen some sites saying that if your weight is fluctuating it will dissipate faster than if you keep a fairly stable amount of body fat.

  • someguy3@lemmy.ca
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    5 months ago

    If they didn’t have blood supply they’d start rotting.

    And yes if you burn fat via cardio or whatever, it will pull from anywhere in the body. Your expensive procedure just went up in smoke.

  • higgsboson@dubvee.org
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    5 months ago

    The fat cells behave the same as before they were transferred. The number of fat cells mostly stays the same when you lose weight, just depleting the fat reserves within the them. So yeah, you’d mostly re-gain it in the same cells.

    • dependencyinjection@discuss.tchncs.deOP
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      5 months ago

      Thanks.

      As a follow up. With fat burning being random is that random to us as we can’t control it, but the body does know in what order it will do things.

      If the latter does that mean if it was your waist next and that was moved to you bum, would it still be those cells next.

  • dohpaz42@lemmy.world
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    5 months ago

    IANAD, but it’s my understanding that how people store and lose fat is unique to their biology. That said, it makes sense (to me) that one of two things would happen:

    1. They burn more fat in the area they augmented (ie their butt), because they didn’t have a lot to there begin with
    2. They gain/burn their fat faster elsewhere in their body, leaving their butt safe for a while

    I do not have any proof to back that up, other than my own personal experience with my body.

    • dependencyinjection@discuss.tchncs.deOP
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      5 months ago

      Thanks.

      Number 1 is an interesting point and I asked something similar to another reply.

      I wondered if the say the body already knows which fat cell is next to be burned, like a map. Then say if the waist was next but that was moved to the butt would it still be waist or now butt.

      Your question is also interesting in that should there be a given amount of fat in each region and will the body fight for equilibrium again.

      • dohpaz42@lemmy.world
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        5 months ago

        I would imagine that if the body is not used to burning fat in a specific area, it would probably continue not burning fat in that area, until it had no choice but to burn there.