Do spare ketones in blood revert back to fat?

(b03eb5693c69a181f575) #1

I have tried searching to find an answer in current threads and topics, but did not find an immediate answer.
When my body uses a fat cell’s energy and frees the ketones. In the event that the ketones are not needed do they revert back to fat?
I understand that I pee and breathe some of it out, just wondering?

(Rob) #2

Sounds very unlikely. I’ve never heard of a pathway for ketones (BHB) to recombine with the other elements that would make a new fat molecule.

If you did have spare ketones, you would spill them as you said.

(Ken) #3

Actually, when the fat cell breaks, it divides into fatty acids and glycerol. Fatty acids get burned, the glycerol goes to the liver and is the substrate for ketogenesis. The same glycerol can also be used for gluconeogenesis. Any excess ketones produced are excreted in the urine.

(ANNE ) #4

Thankyou for the info, I posted this question but somehow as a guest login. Big fat fingers can’t type well on my cell/mobile phone.

(Allie) #5

They’re excreted in your urine which is what the ketosticks pick up on, waste ketones.

#6

Yes, yes they do. Fat comes out, if it’s not used it goes back. The body won’t leave anything on the table if there’s an evolutionary advantage to keeping it. It’s usually efficient at such, 'cause survival advantage, but if you’ve lived with carbs for years that machinary may atrophy, hence ‘fat adaption’, the process of creating relevant enzymes and new mitochondria for fat burning,
Wish there was a better way to say ‘trust the process’, but it’s evolutionarily conserved across lots of mammals and humans are better at it 'cause big brain needs lotsa ketones, why momma’s breast milk is high fat …

(Rob) #7

Really? Do you have any evidence for that since it would require a mechanism to recreate fat from ketones and glycerol which I’m not sure exists (the body doesn’t need to do this AFAIK).

I could be wrong but everyone else so far seems to agree that ketones DON’T magically recombine into fat molecules.

(Mark Rhodes) #8

This link makes sense to me and supports at best only a minimal 10% fat uptake from ketones if it is at all possible

(Allie) #9

Another reason not to waste money on exogenous ketones then.

(Banting & Yudkin & Atkins & Eadeses & Cordain & Taubes & Volek & Naiman & Bikman ) #10

You will dump them through urine, breath (keto breath) and sweat (you stink). I think you might also poop them out, but no one complains about you having ketone poo.

(Adam Kirby) #11

I don’t have any hard science here but I would think if you chugged ketones in a high-insulin state they could in fact be packed up into fat and stored. Now if we’re talking about a low carb state I don’t see why they would be turned back into fat since insulin wouldn’t be signalling the body for storage.

#12

I so love this place, someone’s always willing to call BS. Agreed I need to defend this properly, but I’m currently smokng meat. My simple answer is the liver is capable of many forms of magik, will still defend the body will store enegy when it can.

(Consensus is Politics) #13

I seriously doubt it. It takes energy to convert. Which would mean burning more fat for energy to reconvert those ketones back into fat again. I say this with no evidence whatsoever. That said, the human body does some outlandish things. For instance, if you told me just a few years ago I would be peeing acetone, I’d ask what brand do you smoke?

#14

My question is why would the body create excess ketones in the first place?

The body is usually works very economically only activating processes when there is a demand (burning glucose first, tucking excess glucose away as fat, only switching to ketosis when it has raided its glycogen reserves, learning how to not waste ketones by wasting them via urine…)

I mean, why on earth would the body produce excess ketones only to have to re-process them back into stored energy?

Edited to add: ooops @Robert_Johnson
Just seen your post. Looks like we are on the same page.

(Consensus is Politics) #15

I think the obvious thing would be this… Our bodies cant see into the future. I dont think it can speculate either. So in that line of thinking (could be wrong, could very well be some sort of biological PID set points that the body has, just never heard of, yet) in the line of thinking that the body cant anticipate, it needs to keep ahead of the energy need at all times. So, no matter what state of energy use you are in, you will always get just enough, plus a little bit more.

Most likely (if that is the case) that would explain why some people, like @richard, wearing the hat his mum made for him :cowboy_hat_face: seems to always be showing very low ketones, while others of us show 5 or 6 times as much. Different bodies have different things going on that cant be predicted. Enter Chaos Theory. Its like predicting the weather here in North Carolina, fuhgedabotit.

(Allie) #16

The body always creates excess ketones until someone is adapated. That’s what the adaptation process is, the body adapting to running on ketones and knowing how many to make.

(Richard Morris) #17

nailed it Bob … the body has an internal calculus where many of the outputs of that calculus feed into the inputs (eg: when you exercise more you get more hungry) so it is mathematically chaotic (because it contains iterative functions that are deterministic yet change every time you run them)

(Michele) #18

I love this place so much! Interesting questions and intelligent dialogue - beats shitty TV anyday.

(Banting & Yudkin & Atkins & Eadeses & Cordain & Taubes & Volek & Naiman & Bikman ) #19

I’m having trouble viewing my body as a sentient organism.

(Doug) #20

More ketones means more fat being burned, right? :+1: