The Brain's Energy Bill: From Childhood to Old Age with Assoc. Prof Sharna Jamadar (448)

In this episode, we're joined by Associate Professor Sharna Jamadar, a cognitive neuroscientist at Monash University, to explore how the brain uses energy, and how that changes across the lifespan. Did you know that a 10-year-old's brain uses over 50% of the body's total energy, compared to just 20% in adults? We dive into why younger brains work harder, the role of synaptic pruning and proliferation, and how the brain's organisation impacts cognitive efficiency. We also touch on the importance of glucose metabolism and its connection to age-related disorders like Alzheimer's. A fascinating look at the energy demands of our most complex organ!

Bluesky: @SharnaJamadar
Linkedin: Sharna Jamadar
www.sharnajamadar.com
Email: Sharna.jamadar@monash.edu

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• The Brain’s Energy Bill: From Childhood to Old Age with Assoc. Prof Sharna Jamadar (448)

The Brain’s Energy Bill: From Childhood to Old Age with Assoc. Prof Sharna Jamadar (448)

Oct 18, 2025

In this episode, we’re joined by Associate Professor Sharna
Jamadar, a cognitive neuroscientist at Monash University, to
explore how the brain uses energy, and how that changes across the
lifespan. Did you know that a 10-year-old’s brain uses over 50% of
the body’s total energy, compared to just 20% in adults? We dive
into why younger brains work harder, the role of synaptic pruning
and proliferation, and how the brain’s organisation impacts
cognitive efficiency. We also touch on the importance of glucose
metabolism and its connection to age-related disorders like
Alzheimer’s. A fascinating look at the energy demands of our most
complex organ!

Bluesky: @SharnaJamadar

Linkedin: Sharna Jamadar

www.sharnajamadar.com

Email: Sharna.jamadar@monash.edu

About the Podcast

Dr Karl’s a curious optimist – a great combination for a science lover. Join him and his guests for weird facts, amazing conversation and remember, it’s never too late for a happy childhood.
https://drkarl.com/

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