Hearing Loss and APOE4: The Dementia Risk Nobody Checks
Originally published on YouTube on 27 July 2026.
Original video: https://www.youtube.com/watch?v=KEfFx-m_Ppc
Hearing loss is easy to overlook when you're focused on ApoB, glucose, sleep and training. In this episode I walk through the dementia evidence, the ACHIEVE trial, what effective hearing aids change, and the four-step hearing plan I'd run myself.
I'm Kevin. I'm a Doctor of Pharmacy and I carry two copies of APOE4.
RESOURCES
Apply to join Phoenix: https://apoe4.link/Hear
Essential APOE4 Guide: https://apoe4.link/HearG
Weekly Newsletter: https://apoe4.link/HearN
CHAPTERS
00:00 Introduction
03:32 Chapter 1: How big this actually is
05:21 Does Your Genotype Get You Out of It?
06:27 Using DNA to Test Cause
08:24 Chapter 2: How your ears drag your brain down
08:40 Road One: Effortful Listening
09:42 Road Two: It Takes the Room
11:08 Roads Three and Four: Cause, Catalyst, or Consequence
13:14 Chapter 3: Does fixing it work, and how?
13:25 The Trial That Looked Like a Failure
17:36 Effectiveness Is the Whole Game
19:19 The four-step hearing protocol
20:59 Chapter 4: The honest caveat, and what to do anyway
21:11 The Study That Complicates Everything
22:48 What Happens if I’m Wrong
24:17 Conclusion
STUDIES
1. Lin FR et al., 2023, Lancet (ACHIEVE RCT): https://pmc.ncbi.nlm.nih.gov/articles/PMC10529382/
2. Pike JR et al., 2025, Alzheimer's & Dementia (ACHIEVE, risk-stratified): https://pmc.ncbi.nlm.nih.gov/articles/PMC12078761/
3. Jiang F et al., 2026, Cell Reports Medicine: https://pmc.ncbi.nlm.nih.gov/articles/PMC13198310/
4. Liang Z et al., 2021, Frontiers in Aging Neuroscience: https://pmc.ncbi.nlm.nih.gov/articles/PMC8295986/
5. Jiang F et al., 2024, BMC Medicine: https://pmc.ncbi.nlm.nih.gov/articles/PMC11542226/
6. Levett BA et al., 2025, Journal of Neurology: https://pmc.ncbi.nlm.nih.gov/articles/PMC12084262/
7. Venkatesh S et al., 2026, Journals of Gerontology B: https://doi.org/10.1093/geronb/gbaf276
8. Zanin J et al., 2026, JAMA Otolaryngology: https://pmc.ncbi.nlm.nih.gov/articles/PMC13220155/
9. Shulman LM et al., 2026, BMJ Open (ARCH protocol): https://pmc.ncbi.nlm.nih.gov/articles/PMC13202049/
10. Lancet Commission 2024: https://doi.org/10.1016/S0140-6736(24)01296-0
This is education, not medical advice. I'm telling you what the research shows and what I do as a carrier.