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Which human organ uses the most energy?
Human bodyAnatomy
Quick Answer
The brain uses the most energy of any human organ at rest. It typically consumes about 20% of the body’s resting energy despite being only about 2% of body mass.
The Full Story
The brain is the body’s most energy-hungry organ in normal resting conditions. Although it accounts for only about 2% of adult body weight, it uses roughly one-fifth of the body’s resting energy, mainly to power neurons and maintain electrical signaling. This high demand is why steady glucose and oxygen supply are so important. During childhood, the brain can use an even larger share of the body’s energy budget.
Key Facts
1.Brain uses about 20% of resting energy
2.Brain is about 2% of body mass
3.Constant glucose and oxygen supply are essential
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Suggested video title for this topic:
"Your brain is tiny — but it burns a huge share of your energy!"