Often you can get to hear ‘…but the brain needs carbs to function!” No, the brain needs glucose to function!
The carbs you eat turn instantly to glucose (sugar) in the stomach. BUT the liver produces glucose as well, bur from protein and fat (the process is called gluconeogenesis). The brain even uses ketones as a source of energy.
When you limit your intake of carbs the body produces ketones. Ketones are produced by the fatt storage in the body when the body does not have any carbs as a source of energy. The body then uses the stored body fas as energy source, this is great! This is a normal and natural asset in the body but nowadays the body hardly ever needs to use this process as we, too ofte, feed our bodys with lots of food and lots of carbs.
Carbohydrates raise your blood sugar levels, which in turn stimulates the release of insulin. Insulin is the only hormone which helps the blood sugar to penetrate into the cells and there it burns to energy. High insulin turns blood sugars into fat and stores that fat on your body. A high insulin stops you from burning fat och can cause great damage in your body.
When you reduce the intake of carbs you do not need to be afraid of fat or fatty foods or the amounts of calories that cannot be stored.