Better Brain Fitness (a Brainjo Production)

Josh Turknett, MD

Podcast

Episodes

Latest Episodes

Can a Blood Test Predict Alzheimer's?

4/14/2026 • 28 min

A 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 episode, we break down the study behind the headlines to understand what it really shows, where the major limitations lie, and what… Play episode

An Existential Crisis for Alzheimer's Research?
Does Computerized Brain Training Help?
What's Wrong With The New Food Pyramid.
#90: This Brain Aging Study Is Our New Favorite!
#89: How to Neutralize the Impact of Hearing Loss on Dementia Risk
#88: Are Microplastics Causing Dementia?
#87: Hacking the Brain: TMS, Brain-to-Brain Communication, and Predicting …
#86: Why Your Brain Needs Friends, with guest Dr. Ben Rein
#85: Unpacking the surprising results from the POINTER trial
#84: Dr. Tommy Wood's Exciting Announcement!
#83: How To Thrive In An Always On World, with Dr. James Hewitt
#82: Why Your Brain Is (Perfectly) Weird: Understanding Individual Differe…
#81: Your Brain on Caffeine: the REAL story
#80: Statins, Cholesterol, and Brain Health: Our Unfiltered Take
#79: Does Red Light Therapy Boost Brain Health?
#78: What's More Important For The Brain: Diet or Exercise?
#77: Why Does Sleep Quality Decline as We Age (and what can we do about it…
#76: Can the Brain Heal Itself After Years of Poor Sleep Habits?
#75: Can a Long Layoff Really Boost Your Performance?
#74: Can We Train Our Brain To Improve Focus?
#73: Democratizing Health Optimization with AI: A conversation with Dr. Ja…
#72: Hormone Replacement Therapy: A Secret Weapon Against Dementia?
#71: What's really happening with scientific research funding?
#70: Why Anyone Can (and should!) Play Music
#69: How to recover from loss of smell and boost cognitive function
#68: A Scalable Solution For Alzheimer's Prevention
#67: Can You Improve Your Brain's Processing Speed?
#66: Does a tremor raise your risk of dementia?
#65: Tommy's TV Adventure, and how is social media affecting our brain?
#64: Can Hypertension Meds Really Reduce Dementia Risk?
#63: Can You Learn More By Napping???
#62: Can Brief Heart Rate Peaks Still Boost Brain Health?
#61: Why Is Tommy Doing Sauna & Cold Plunges?? ("ask us anything" excerpt)
#60: How To Stay In Shape When You're Injured
#59: Can The Brain Recover After Stroke?
#58: Can The Brain Recover From Years Of Heavy Drinking?
#57: Can Fasting Sharpen Your Mind?
#56: Does High Intensity Interval Training Have Unique Brain Benefits?
#55: Is ADHD a barrier to learning music?
#54: New Findings on APOE4: Should We Be Worried?
#53: Change Your Diet, Change Your Mind: A conversation with Dr. Georgia E…
#52: Can You Increase Neuroplasticity As You Age?
#51: How To Harness Plasticity for Mental Health, with Nicole Vignola
50: Can a driver in their 40s win a Formula 1 championship?
49: Can Testosterone Replacement Boost Brain Health and Cognitive Function?
48: How To Improve Mental Health With Lifestyle Changes.
47: How to reduce the risk of dementia from concussion and TBI?
46: How Do I Know if a Ketogenic Diet Safe for Me?
45: Are Trump And Biden Mentally Fit For Office? The Brain Docs Weigh In.

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