how high carb diets signal the brain to “just keep eating”

Interesting talk here. This guy is a biochemistry professor and “not the best speaker” for undergraduate or lower level biochemistry enthusiasts, but I did get one very simple and profound thing in the 28th minute: eating lots of carbohydrates results in such a huge flood of insulin that the insulin receptors in the brain TOTALLY withdraw.

A chimpanzee brain at the Science Museum London

A chimpanzee brain at the Science Museum London (Photo credit: Wikipedia)

What does that mean in human experience? With all the insulin receptors withdrawn, the brain will always signal to the body “you are still hungry.” Eating too much carbohydrates BLOCKS the brain’s ability to sense when it should stop eating.

Why? Because the brain is hungry for fat. The only people who eat grain-based diets (when high quality fats are available) do so based on intensive cultural programming (like public schooling, TV ads, propaganda from the religion of the FDA, indoctrination from doctors licensed by the same network of religious institutions, etc).

English: Obesity is rising as we lose contact ...

English: Obesity is rising as we lose contact with traditional ways of eating. (Photo credit: Wikipedia)

Why does a high-carb diet result in insulin receptors withdrawing (what evolutionary purpose does it serve)? To prepare for winter periods of hibernation. When a human is eating lots of carbs, the brain interprets that as a signal to go in to an emergency mode to prevent starvation. Hunger signals are constant. Fat is conserved. The “obesity” of bears fattening up for winter is based on eating lots of carbs (to the best of my knowledge). When the bears resume “normal” diets in the spring (wtih increased levels of fat), then the starvation mode reverses and the insulin receptors extend back out to “normal” (non-emergency) receptivity.

So, “insulin resistance” is a rather imprecise label. High carbs diets lead to rocketing rates of obesity because those diets interfere with the brain’s ability to feel full (satisfied or “satiated“). High carb diets increase the experience of hunger. High carb diets lead to a hormonal panic of conserving fat to prepare for winter. Paleo diets (with complex carbs but not a lot of simple carbs) do not trigger the “prepare for hibernation” obesity response.


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12 Responses to “how high carb diets signal the brain to “just keep eating””

  1. Robert Says:

    A high carb diet is as unnatural a diet for a human being as it is for a cow. Cattle are put into feed lots before slaughter and force fed grain products. This rapidly generates fats, decreases the omega 3 fats/increases the omega 6, acidifies the PH of the cow, and rapidly generates the proliferation of morbid microbials. A similar thing happens to Americans when 60% of their diet is carbohydrates. These physiological and brain changes are not the primary cause, but only a reflection of an extremely poor and unnatural diet.

    • jrfibonacci Says:

      I generally agree, though cows have digestive systems specifically designed for grass (carbohydrate). Grain-based diets often do result in cows needing anti-biotics and so forth to remain alive, though.

  2. Robert Says:

    Grass has very low carbohydrates! It’s like a salad diet, and thats why they spend all of their time eating! It’s extremely difficult to get fat eating salads!
    Grains are almost all completely complex carbohydrates!
    The need antibiotics because the grain diet alters the PH, and morbid microbials thrive in this environment!

    • jrfibonacci Says:

      I understand that grass contains lots of moisture, but it is basically fiber. Cows have 3 stomachs and a massive resource of symbiotic bacteria which create oils from the fibers they eat.

      Consider the natural diet of bison or ox and other relatives of the cow (water buffalo, etc). They eat grasses (ground cover, weeds, etc). I do not just mean one species of grass, but basically the same stuff that goats and sheep eat.

      Herbivores make fat without eating a lot of fat. They make it from carbohydrates. Humans do not have the digestive tract of herbivores.

  3. Robert Says:

    Have you ever killed a wild game herbivore? I have, and unless they are feeding in corn and soya crops, there is no fat on them whatsoever! Grass is not high in CARBOHYDRATES!!!!!!!!
    …Get a grip!

    • jrfibonacci Says:

      I realize that wild game tend to have less fat than animals on feed lots. I personally have killed a rabbit (I actually beat it to death). Yes, there was SOME fat on the rabbit. Of course, every creature has some fat. If you are certain that herbivores like elephants have no fat whatsoever on them, then you may be unaware of something called “seasons.” In cooler climates, fat levels fluctuate dramatically approaching winter hibernation. Primitive tribes tend to hunt in the season when fat levels are highest in wild game (because they want to eat the tissues high in fat, like liver and brain). Maybe you should eat more high quality fat yourself, as your replies have been approaching hysteria, which is a sign of high levels of neurological inflammation (like too low of a ratio of omega 3 fatty acids to omega 6)! πŸ˜‰

  4. Robert Says:

    Cellulose burns, it is made of carbohydrates, and it is the most abundant carbohydrate in the world….but it is indigestible!
    This is the primary carbohydrate in grass and trees!
    It is irrelevant!

  5. Robert Says:

    The only animals that can do alright eating grains as a staple are birds, and maybe pigs!

  6. Robert Says:

    OK, partner…grass is a high carbohydrate food!

    Good luck and keep up working on your fundamental comprehension.
    Beat a rabbit to death, seems a little psychotic? Maybe you need to work some stuff out with meds and a councillor?

  7. Robert Says:

    It’s likely a sign of exasperation when dealing with the mentally defective like yourself?
    Have a good life!

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