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the claim
The human brain consumes more energy during intense mental work
the verdict
SUPPORTED
the evidence backs this
confidence 86/100

Neuroimaging studies confirm that engaging in intense mental work and cognitive tasks significantly increases the brain's metabolic demands, specifically elevating glucose consumption and regional oxygen uptake.

Evidence for · 2
Reconfiguration of functional brain networks and metabolic cost converge during task performance
2020 · cited by 70
Paper 1 demonstrates that task engagement and complex cognitive task performance elicit a marked increase in glucose consumption and functional brain network reorganization.
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More for · 1
Enhanced cerebral oxygenation during mental and physical activity in older adults is unaltered by amnestic mild cognitive impairment
2025 · cited by 2
Paper 9 shows that mental arithmetic challenges increase metabolic demands and oxygen content in the prefrontal cortex.
The paper trail · every fact has a biography
first checked31 Jul 2026
judged → SUPPORTED · 8631 Jul 2026
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