Dr Karl

Read those articles.

Oh, it can work for some people.

Yeah, it works, but less than 20 grams of carbs a day.

Okay, so the numbers with regard to brain function, the average adult, the brain weighs 2% of their body weight, uses 20% of their glucose or energy.

In a four-year-old, it's 50%, and in the eight to 12-year-olds, it's about 30%.

So it's not 80%, but it's still a huge amount to be used.

With regard to glucose, it responds very rapidly.

The levels can go up and down, and the brain can crank up its activity and then use more glucose, and you can release more glucose.

If you're dealing with the ketones, they're more steady state.

The brain will run on either glucose or the ketones, which are acetoacetate or hydroxybutyrate, but they're more steady and long-term.

And they will cross the blood-brain barrier.

And there was a case of a man who was 105 kilograms overweight and lost 2.2 kilograms a week for 54 weeks and didn't eat anything.

And his brain ran entirely on ketones.

And so he...

Now, with regard to the mental clarity thing, in the early days, often people have a kind of a fog.

But then afterwards, they either get back to normal or they say, I've got increased clarity.

And that could be related to either there is increased clarity or the placebo effect or they're feeling really good about themselves because they've lost some weight.

Long term, you've got this steady energy.

But if you've got to throw in a whole lot of resources all at once, you might be just a little tiny bit slow in responding because you can throw in more glucose, but you can't throw in ketones really quickly.

And then, by the way, the ketones are used medically for childhood epilepsy.