Which fuel(s) can provide the brain with a significant amount of its total energy needs?

Question

Quizplus · Accepted Answer

Ketone bodies can be used by the brain for energy, especially during periods of fasting or low carbohydrate intake, when glucose is less available. Fatty acids cannot cross the blood-brain barrier and are not a direct source of energy for the brain, and while amino acids can be used by the brain, they are not a primary fuel source under normal conditions.

Which Fuel(s) Can Provide the Brain with a Significant Amount