Aren’t all carbohydrates sugars?
Well, chemically speaking, yes.
Carbohydrates are a macronutrient found in many foods, like fruits, vegetables, grains, and dairy. They are molecules composed of carbon, hydrogen, and oxygen atoms and an essential nutrient for humans.
Ketogenic Diet, Keto, or Low-Carb. Yes or no?
In fact, our brains mainly use carbohydrates as an energy source. So when you don’t eat carbs or heavily restrict eating them, your body will create energy via complicated and exhausting pathways, as glucose is the preferred and most efficient source of energy.
That is because glucose can easily cross the blood-brain barrier and be used directly by brain cells to produce ATP, the body’s energy currency. Remember that the mitochondrion is the powerhouse of the cell? ATP is what it produces. So that’s why it is the powerhouse of the cell.
While the brain can use other fuel sources, such as ketones and some amino acids, glucose is preferred because it requires less energy to metabolise than other fuel sources. This is because glucose is easily broken down into ATP in the brain’s cells via the process of glycolysis, which is a relatively simple and quick process.
In addition, the brain’s ability to use alternative fuel sources, such as ketones, is limited, and prolonged use of alternative fuel sources can have potential side effects. Therefore, while the brain can use other fuel sources in certain circumstances, glucose is the preferred and most efficient fuel source for the brain.