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It's a risky way of thinking to reduce every act to a moral choice. ie I could have used the energy that I burned making this post, to hand out a dollar to a ho

It's a risky way of thinking to reduce every act to a moral choice. ie I could have used the energy that I burned making this post, to hand out a dollar to a homeless person. Beyond how ridiculously reductive this becomes, it's impractical. You have to have carbs for your brain to run.

brippalcharrid 2y ago
The human brain can run on up to 70% ketones overall (this is not only safe, but it appears to have additional therapeutic benefits) and your body can synthesize glucose in your liver and kidneys from fats and proteins though gluconeogenesis to supply the remaining parts of your brain that can't metabolize betahydroxybutyrate, acetoacetate and acetone.
eru 2y ago
I agree with almost everything you say. However: > Beyond how ridiculously reductive this becomes, it's impractical. You have to have carbs for your brain to run. No. People live on no-carb diets just fine and enter ketosis. (And in any case, the comment you replied to only talked about sugar, not carbs in general.)
- vixen99 2y ago
  Not just any no/low carb diet: 'A low-carbohydrate diet based on animal sources was associated with higher all-cause mortality in both men and women, whereas a vegetable-based low-carbohydrate diet was associated with lower all-cause and cardiovascular disease mortality rates.' https://pmc.ncbi.nlm.nih.gov/articles/PMC2989112/ https://pmc.ncbi.nlm.nih.gov/articles/PMC2989112/ It is of course rather difficult if not impossible, to have a vegetable diet completely devoid of carbohydrates.
  - eru 2y ago
    The number of people in this study is surprisingly large! Alas, it doesn't have much bearing on the part of the comment I wanted to focus on 'You have to have carbs for your brain to run.' Because the diets in question here still have some carbs. (And the changes in mortality rates are fairly modest, too.) What I wanted to say is that even if you eat no carbs at all, you brain will still get its energy. You won't just keel over after a while, like if you didn't eat anything at all henceforth. Of course, there might be second order health effects, like the study you linked suggest.
knowitnone 2y ago
no you don't. You have to have glucose for your brain to run. Understand the difference.
- majkinetor 2y ago
  u dont have to input it as body makes enough
aziaziazi 2y ago
I agree with peers. Doesn’t Keto (for part of the year) worked for millennia for our ancestors?
- addicted 2y ago
  Most of our ancestors lived a fraction of the lifespans we do. So any argument based on “it worked for our ancestors” is flawed. “It worked for our ancestors” could be the beginning of an idea for research, but certainly does not take you much further than that.
  - deleted 2y ago
    [deleted]
  - aziaziazi 2y ago
    I agree with all you said but I also guess our ancestors mostly die from infection, hypothermia, viruses… certainly not from brain stop working because carbs deficiency. "You have to have carbs for your brain to run" doesn’t make sense. You have to have sugar in your brain to run, but that sugar surely can comes from fat as well.
- eru 2y ago
  Some of our ancestors might have done keto some times, but I'm not sure most of them did most of the time? Humans are decidedly omnivorous, and most of them would eat whatever they could get their hands on, including plants and mushrooms (and sometimes honey!) etc.
  - stefs 2y ago
    iirc the inuit had a diet mostly consisting of meat and fish, but - according to wikipedia - not even they were usually in ketosis.
- Supermancho 2y ago
  They also had carbohydrates in their diet. Meat naturally contains carbs. Pretending that the human body is misunderstood and that it worked very differently is a common pitfall of these discussions. Largely it was the same, with the amounts differing.
peaceanwar 2y ago
No. You dont. There are other metabolic pathways to produce glucose (or produce ketones). The other pathways ‘push’ the body more since they have to do some conversion. This ‘extra effort’ is considered to be more healthy.
- Supermancho 2y ago
  Yes there are. You still need carbs and you get them (ie celery has carbs), regardless. Repetition wont convince someone arguing in bad faith, so I will bow to your religious beliefs.
scrollop 2y ago
Yes you need to have carbs, however the quality of the carbohydrate is the most important factor. If you have any sense for your health you will not have regular intake of sugar, white bread, potatoes crisps, rice cakes, any thing with a high GI. Some carbohydrates reduce your risk of diabetes, and if you're smart you follow the evidence and you eat these- https://youtu.be/DNQrNWsoPEE?si=GORRP5IblhNkKCdF https://youtu.be/DNQrNWsoPEE?si=GORRP5IblhNkKCdF
hollerith 2y ago
>You have to have carbs for your brain to run. The brain can run well on ketone bodies (which the liver makes from fatty acids). In fact, causing the brain to run on ketone bodies is used by doctors to treat illness (and not just epilepsy).

brippalcharrid 2y ago

The human brain can run on up to 70% ketones overall (this is not only safe, but it appears to have additional therapeutic benefits) and your body can synthesize glucose in your liver and kidneys from fats and proteins though gluconeogenesis to supply the remaining parts of your brain that can't metabolize betahydroxybutyrate, acetoacetate and acetone.

eru 2y ago

I agree with almost everything you say. However: > Beyond how ridiculously reductive this becomes, it's impractical. You have to have carbs for your brain to run. No. People live on no-carb diets just fine and enter ketosis. (And in any case, the comment you replied to only talked about sugar, not carbs in general.)

vixen99 2y ago
Not just any no/low carb diet: 'A low-carbohydrate diet based on animal sources was associated with higher all-cause mortality in both men and women, whereas a vegetable-based low-carbohydrate diet was associated with lower all-cause and cardiovascular disease mortality rates.' https://pmc.ncbi.nlm.nih.gov/articles/PMC2989112/ https://pmc.ncbi.nlm.nih.gov/articles/PMC2989112/ It is of course rather difficult if not impossible, to have a vegetable diet completely devoid of carbohydrates.
- eru 2y ago
  The number of people in this study is surprisingly large! Alas, it doesn't have much bearing on the part of the comment I wanted to focus on 'You have to have carbs for your brain to run.' Because the diets in question here still have some carbs. (And the changes in mortality rates are fairly modest, too.) What I wanted to say is that even if you eat no carbs at all, you brain will still get its energy. You won't just keel over after a while, like if you didn't eat anything at all henceforth. Of course, there might be second order health effects, like the study you linked suggest.

knowitnone 2y ago

no you don't. You have to have glucose for your brain to run. Understand the difference.

majkinetor 2y ago
u dont have to input it as body makes enough

aziaziazi 2y ago

I agree with peers. Doesn’t Keto (for part of the year) worked for millennia for our ancestors?

addicted 2y ago
Most of our ancestors lived a fraction of the lifespans we do. So any argument based on “it worked for our ancestors” is flawed. “It worked for our ancestors” could be the beginning of an idea for research, but certainly does not take you much further than that.
- deleted 2y ago
  [deleted]
- aziaziazi 2y ago
  I agree with all you said but I also guess our ancestors mostly die from infection, hypothermia, viruses… certainly not from brain stop working because carbs deficiency. "You have to have carbs for your brain to run" doesn’t make sense. You have to have sugar in your brain to run, but that sugar surely can comes from fat as well.
eru 2y ago
Some of our ancestors might have done keto some times, but I'm not sure most of them did most of the time? Humans are decidedly omnivorous, and most of them would eat whatever they could get their hands on, including plants and mushrooms (and sometimes honey!) etc.
- stefs 2y ago
  iirc the inuit had a diet mostly consisting of meat and fish, but - according to wikipedia - not even they were usually in ketosis.
Supermancho 2y ago
They also had carbohydrates in their diet. Meat naturally contains carbs. Pretending that the human body is misunderstood and that it worked very differently is a common pitfall of these discussions. Largely it was the same, with the amounts differing.

peaceanwar 2y ago

No. You dont. There are other metabolic pathways to produce glucose (or produce ketones). The other pathways ‘push’ the body more since they have to do some conversion. This ‘extra effort’ is considered to be more healthy.

Supermancho 2y ago
Yes there are. You still need carbs and you get them (ie celery has carbs), regardless. Repetition wont convince someone arguing in bad faith, so I will bow to your religious beliefs.

scrollop 2y ago

Yes you need to have carbs, however the quality of the carbohydrate is the most important factor. If you have any sense for your health you will not have regular intake of sugar, white bread, potatoes crisps, rice cakes, any thing with a high GI. Some carbohydrates reduce your risk of diabetes, and if you're smart you follow the evidence and you eat these- https://youtu.be/DNQrNWsoPEE?si=GORRP5IblhNkKCdF https://youtu.be/DNQrNWsoPEE?si=GORRP5IblhNkKCdF

hollerith 2y ago

>You have to have carbs for your brain to run. The brain can run well on ketone bodies (which the liver makes from fatty acids). In fact, causing the brain to run on ketone bodies is used by doctors to treat illness (and not just epilepsy).