An illustration of a translucent head (showing the brain), with three wavy line running horizontally across the image. New research suggests the gut microbiome may influence Alzheimer’s dementia risk.
Adobe Stock Images.

The Gut-Brain Shocker: Is Alzheimer’s Linked to Your Microbiome?

Michael Hunter, MD
BeingWell
Published in
4 min readNov 4, 2024

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Could the key to understanding Alzheimer’s disease be hiding in our gut?

New research from Florida State University (U.S.) suggests a surprising link between a common gut bacterium, Klebsiella pneumoniae, and the progression of this devastating brain disorder.

Today, I’ll break down the findings of a new study using a mouse model of Alzheimer’s disease infected with the bacterium.

I’ll close with some ways I try to reduce my risk of ever suffering from dementia.

The Microbiome

Imagine your gut is like a bustling city with many different bacteria living together.

Most of them are good citizens and help keep things running smoothly.

An illustration of Klebsiella pneumoniae bacteria.
Klebsiella pneumoniae bacteria, generated by Google Gemini AI.

Klebsiella pneumoniae is one of these bacteria — usually harmless and just part of the crowd.

Enter Antibiotics

Imagine antibiotics coming in like a powerful storm, wiping out many good bacteria in your gut city.

This would throw your gut’s population out of balance.

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BeingWell
BeingWell

Published in BeingWell

A Medika Life Publication for the Medical Community

Michael Hunter, MD
Michael Hunter, MD

Written by Michael Hunter, MD

I have degrees from Harvard, Yale, and Penn. I am a radiation oncologist in the Seattle area. You may find me regularly posting at www.newcancerinfo.com

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