#88: Are Microplastics Causing Dementia?

#88: Are Microplastics Causing Dementia?

From Better Brain Fitness (a Brainjo Production) by Josh Turknett, MD

November 4, 2025 · 38 min

About this episode

This episode discusses the impact of microplastics on brain health and measures to reduce exposure.

You may have heard the alarming headline about a recent study that showed the typical brain had about a teaspoon of microplastics inside of it. And that amount appears to be increasing each year. In equally alarming fashion, that same study also revealed that those with dementia had over 5 times the amount of plastic in their brains as those without. Needless to say, it's an issue worth paying attention to. So, in this episode, we break down what is known about microplastics and their impact on brain health, and we discuss the specific measures we're both taking to reduce our own exposure to microplastics and enhance their clearance. Because brain plasticity is a great thing, but a plastic brain is not! ----- To submit a question for us to answer on the podcast, go to brainjo.academy/question . To subscribe to the free Better Brain Fitness newsletter, join us when we record live, and get our Guide and Checklist to essential blood tests and nutrients, go to: betterbrain.fitness . Click here to pre-order Dr. Wood's book, "The Stimulated Mind." Click here to grab Dr. Turknett's bestselling book, "Anyone Can Play Music" Intro and Outro music composed and produced by Julienne Ellen .

People in this episode

Host: Josh Turknett, MD

Topics covered

  • microplastics
  • dementia
  • brain health
  • exposure reduction
  • plasticity

Keywords

  • microplastics
  • dementia
  • brain health
  • exposure reduction
  • plastic brain

Mentioned in this episode

Organizations: Better Brain Fitness

Products: The Stimulated Mind, Anyone Can Play Music

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