HOW KETO WORKS
When there is a lack of glucose in the bloodstream (from not
eating carbs), a hormone called glucagon is released. Glucagon
stimulates the liver to convert the stored glycogen into
glucose which is then released into the bloodstream.
Glucagon also tells the body to use the stored fat as a fuel
source. As your body burns fat, ketones are created. Ketones
are then used as your primary source of energy. (In the human
body, the brain requires the most energy and it can only run
on glucose or ketones.) It can take a little bit of time for the
body to get used to burning fat, instead of glucose for
energy. This period is usually called “fat adaptation” or
“becoming fat adapted”.