3. Doesn’t the brain need dietary carbs?

No. On a strict low-carb diet the brain can be primarily fueled by fat — or technically, by ketones. When carb intake is very low, your liver converts body fat or fat from the food you’ve eaten into ketones, which can be used by the brain as fuel.

brain
Furthermore, your body can produce any glucose it needs through a process called gluconeogenesis, converting other nutrients to glucose – even if you don’t eat any carbs at all.

There is no need for carbohydrates in the diet; the brain functions fine without them.

Learn more in our full guide:

Food for thought: Does the brain need carbs? 

Learn more about ketones and ketosis