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Brain's Energy Consumption
- The brain, despite being only 2% of body weight, consumes over 20% of daily energy.
- This high energy demand significantly influences brain functions, from decision-making to emotions.
Neurons and Energy
- Neurons are the primary working units of the brain, responsible for thinking and actions.
- Neuronal firing, essential for brain function, requires a constant supply of energy.
Glucose as Brain Fuel
- Brain cells primarily use glucose, a type of sugar derived from food, for energy.
- Glucose is transported to brain cells via the bloodstream, regulated by the hormone insulin.