MEDICAL PHYSIOLOGY

Detailed explanation-1: -How much energy does the brain require? For the average adult in a resting state, the brain consumes about 20 percent of the body’s energy. The brain’s primary function-processing and transmitting information through electrical signals-is very, very expensive in terms of energy use.

Detailed explanation-2: -The brain requires a tremendous amount of energy to do its job. While it only represents 2 percent of the body mass of the average adult human, the brain consumes an estimated 20 percent of body’s energy supply.

Detailed explanation-3: -The brain works with 20 watts. This is enough to cover our entire thinking ability.

Detailed explanation-4: -The human brain gobbles up to 10 times more energy than the rest of the body, eating through 20 percent of our fuel intake on average when we’re resting. Even in comatose patients who are said to be ‘brain dead’, only two to three times less energy is consumed by the brain.