Brain, Fat, Glycerol, Glucose, Calories

Brain, Fat, Glycerol, Glucose, Calories

Calories are important as to their effects on hormones that relate to hunger and how much one will eat. In other words, outside of being in cages and being fed by lab technicians, people are driven to eat what and when they crave, and that is controlled by hormones, specifically leptin.

By far, the major benefit of a high-fat diet is that one eats less by not craving carbs and putting one into a fat burning metabolism. One will then continue to burn fat when not being fed, thus “eating” their own fat and therefore not requiring further food to obtain fuel and thus being satiated without having to eat extra.

It has been known for decades that eating carbohydrates is more thermogenic than fat, such that more energy than fat is released as heat rather than retained as fat. One might think that's good, but not necessarily. You would never put a thermogenic fuel in your car such that it would run hotter. Nor should you do that to yourself.

The brain not only can burn, but works better burning ketones from fat, and 90% of its energy needs can (and should be for best health) be met by ketones and glycerol from fat and other substrates, rather than glucose.

• The brain "only has high glucose demands” when that is what the brain is mostly being fed.