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Better Brain Fitness with Drs. Josh Turknett and Tommy Wood
by Josh Turknett, MD
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Ranking history · United States
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Latest episodes
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Baby Brain, Menopause Brain, and the Stories We Tell About Women's Brains (interview with Dr. Sarah McKay)
October 9, 2026 · 54 minNeuroscientist Dr. Sarah McKay has spent more than a decade tracking what the science actually says about women's brains, from pregnancy through menopause. She's the author of The Women's Brain Book, Baby Brain, and Brain Health For…
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Your Brain's 400 Miles of Blood Vessels (Interview with Dr. Jason Hinman)
October 2, 2026 · 49 minYour brain runs on roughly 400 miles of blood vessels, and most of them are too small to see on a standard scan. Vascular neurologist Dr. Jason Hinman of UCLA studies how those tiny vessels keep the brain's white matter healthy, and why…
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Josh's new book: The Genius and the Impostor
August 3, 2026 · 18 minTo grab your copy of the book, head to GeniusAndImpostor.com. 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…
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Preventing the Wrong Kind of Brain Plasticity, with Dr. Henry Mahncke
June 3, 2026 · 1 hr 4 minHenry Mahncke is the CEO of Posit Science and the creator of BrainHQ, the most researched brain training platform in the world. A neuroscientist who did his PhD with Michael Merzenich, considered the father of adult brain plasticity, Henry…
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Can This Vaccine Help Prevent Alzheimer's?
May 7, 2026 · 29 minCan a shingles vaccine cut your dementia risk by 20%? A series of landmark studies — published in Nature, Cell, and JAMA — say yes. In this episode, Tommy unpacks the research: how natural experiments in four countries produced one…
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Can a Blood Test Predict Alzheimer's?
April 14, 2026 · 29 minA recent study published in Nature Medicine claims a blood test can predict when you'll develop Alzheimer's disease, and it got a lot of attention. But how well does it actually work, and should you rush out and get tested? In this…
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An Existential Crisis for Alzheimer's Research?
February 28, 2026 · 21 minIn this episode, we discuss a study published in PLOS One that compared living brain tissue to post-mortem brain tissue and found dramatic molecular differences between the two. The findings raise serious questions about decades of…
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Does Computerized Brain Training Help?
January 30, 2026 · 30 minIn this episode, we dig into a recent McGill University study on computerized cognitive training and its effects on brain chemistry in older adults. What you'll learn: Why certain brain training games reversed a decade of age-related…
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What's Wrong With The New Food Pyramid.
January 16, 2026 · 35 minIn this episode, we dive into guidelines to figure out what all the fuss is about, whether that fuss is warranted, and whether we should even be issuing dietary guidelines to begin with! Topics and Questions Covered The updates: A…
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#90: This Brain Aging Study Is Our New Favorite!
December 18, 2025 · 24 minMuch of what we talk about on Better Brain Fitness resolves around the demand-driven decline model we published. Well...a new study just published in Nature Communications gave that model the best test to date, and the results are pretty…
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#89: How to Neutralize the Impact of Hearing Loss on Dementia Risk
December 12, 2025 · 27 minIn this episode, we tackle a question from listener Carolyn in Michigan about the potential cognitive impacts of long-term hearing loss. What You'll Learn: The research linking hearing loss to increased dementia risk and what the evidence…
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#88: Are Microplastics Causing Dementia?
November 4, 2025 · 38 minYou 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…
About the show
Hosted by Drs. Josh Turknett and Tommy Wood, Better Brain Fitness explores the frontiers of how to keep our brain fit and healthy, so that we can perform at our best and do the things that we love for as long as possible.