There are three kinds of chemical structures that are under the embrella heading labeled ketones.
They get produced from a feedstock structures called acetyl-CoA. Liver cell mitochondria produces the acetyl-CoA.
The acetly-CoA then produces a structure called
Beta-Hydroxybutyrate, the first ketone.
The betA-hydroxybutrate gets translated into
Acetoacetate by throwing off a molecule of water (h2O).
Acetoacetate is the the second ketone.
A small percentage (.5 percent to 2 percent) of acetoacetate
throws off a carbon dioxide molecule (CO2) and at the same time grabs a free hydrogen atom (H). This results in the third keytone called Acetone being formed.
Nail polish remover is pure Acetone, and this is why the breath of diabetics who are undergoing keytone acidosis have a fruit like nail polish remover smell.
Keytone acidosis is dangerious and can kill you.
It is the remaining acetoacetate that becomes the "Flex-fuel" energy solution to maintain life when there is no longer left any blood sugars to do so.
You will stop living if the cells can not get energy on demand.
If you really want to do this correctly, you should look into
something called "prolonged fasting" and the amazing research results
uncovered by a researcher by the name of Valter Longo.