Read Your Genes! APOE4, Brain Health, and Longevity

September 09, 2026

In this episode of the Health Optimization Medicine Podcast, Dr. Ted Achacoso, Dr. Jup Kuipers, Boomer Anderson, Dr. Allen Bookatz, and Dr. Scott Sherr explore:

Why does an APOE4 genotype increase concern around brain aging, and why is genetic risk not the same as a current clinical diagnosis or disease stage?
How can APOE4 affect lipid transport, microglial behavior, vascular integrity, glucose utilization, mitochondrial function, and the cellular environment of an aging brain?
What role do circadian rhythms, NAMPT, NAD+ salvage, and sirtuin activity play in maintaining the metabolic and epigenetic conditions needed for healthy brain function?
How can phenotyping, metabolomic testing, exposomic unburdening, and targeted interventions help identify and address the biological factors influencing an APOE4 brain?
Why might morning light, evening light reduction, consistent meal timing, and other circadian interventions matter before simply reaching for supplements?
Can improving mitochondrial bioenergetics, vascular integrity, and circadian biology meaningfully influence the trajectory of genetic risk, and what does it actually mean to “reset” biological aging?

What We Discuss:

00:00 – Can We Reset Epigenetic Aging in an APOE4 Brain?
01:27 – APOE4 Risk Result vs Diagnosis
03:19 – Why the APOE4 Brain Is More Metabolically Vulnerable
04:02 – Circadian Rhythms, NAMPT and NAD+
04:36 – Health Optimization Medicine vs Disease-Centered Prevention
05:35 – The Three-Phase Clinical Framework
07:25 – Do This on Monday: Audit Your Light Exposure
08:06 – The Skeptical Case Against Metabolic Tuning
09:11 – Three Takeaways for APOE4 and Brain Aging

Full Transcript:

[00:00:00] Dr. Allen Bookatz: What if the word reset is doing too much work? APOE4 is not trivial. One copy raises Alzheimer's risk, and two copies may produce a far more penetrant and predictable Alzheimer's biology. But neither a genotype nor one blood methylation score tells us by itself what's happening in this person's brain today.

[00:00:21] Dr. Allen Bookatz: The stricter question is this. Can we improve the biology that shapes an aging brain, then show that cognition, function, vascular health, metabolism, and the relevant biomarkers work together? That is harder than selling a reset, but it's also far more useful.

[00:00:42] Dr. Jup Kuipers: All right, everybody. This is the Health Optimization Medicine podcast. Your clinical team here today, myself, Dr. Jup Kuipers, general practice physician in Amsterdam and home doctor; Boomer Anderson, our CEO of HOMeHOPe and Health Optimization Medicine practitioner; Dr. Allen Bookatz, chief of [00:01:00] emergency medicine and home doctor as well; and Dr.

[00:01:03] Dr. Jup Kuipers: Theodore Achacoso, the founder of Health Optimization Medicine and practice; and Dr. Scott Sherr, board-certified internal medicine doc and home doctor. Today your clinical team is going after one question: Can we reset epigenetic aging in an APOE brain? The next 25 minutes, you'll get into the cellular mechanics, the clinical protocol, and the one thing most practitioners get wrong about this.

[00:01:27] Dr. Jup Kuipers: Let's go. 

[00:01:27] Boomer Anderson: All right, gents. Can I get a drum roll please? Okay, I guess I'm the only one supplying the drum roll today. All right, the $64,000 question of the day. Can or... A cognitively normal person runs a direct-to-consumer genetics test, I know nobody like this- ... uh, and finds that w- they have one or two APOE4 alleles.

[00:01:48] Boomer Anderson: Should they join the message board on Reddit about how their life is ending? Is th- that a risk result? Is that a diagnosis, or is it really something in between? Mm. Dr. [00:02:00] Bookatz. 

[00:02:00] Dr. Allen Bookatz: Yeah, I, I imagine someone getting a positive APOE test would be quite alarmed initially by it, and if you do a quick internet search.

[00:02:07] Dr. Allen Bookatz: And so I think to clear it up for people, they need to understand that for one copy, yes, it is a major risk result, and for two copies, the biology deserves, I think, really stronger language here. And so let's look at what the literature tells us. A 2024 cohort analysis found a much more predictable sequence of amyloid tau neurodegeneration and symptom onset in the APOE4 homozygotes, so that means two copies.

[00:02:33] Dr. Allen Bookatz: Leading authors propose that an APOE4 as a genetic form of Alzheimer's disease. But the genotype is still not the same as current clinical stage, and that's really important to understand. It changes the prior probability and the urgency of phenotyping 

[00:02:51] Dr. Scott Sherr: Yeah, Allen, and we need to be clear about the contrast here.

[00:02:54] Dr. Scott Sherr: Pathogenesis asks which disease label should we assign and what drugs treat the [00:03:00] protein byproduct? HOMeHOPe, as in contrast, looks at salutogenesis, which asks what creates and sustains health in this specific cellular network? Root cause is not enough if the root question is still disease. 

[00:03:14] Boomer Anderson: All right, let's get into that mechanism, shall we, Dr.

[00:03:16] Dr. Jup Kuipers: Kuipers? 

[00:03:19] Dr. Jup Kuipers: the biology a bit. So why is the APOE4 brain metabolically and epigenetically more vulnerable, Dr. Ted? 

[00:03:27] Dr. Ted Achacoso: Well, because, uh, APOE4 alters lipid transport, microglial behavior, and vascular integrity. In the cerebrovasculature and glia, lipid handling is less efficient, which alters membrane composition, increases oxidative stress, and impairs glucose utilization.

[00:03:44] Dr. Ted Achacoso: When energy production slips, the cell enters a defense or cell danger response pattern, and the epigenetic machinery loses the metabolic stability required for normal transcriptional maintenance. 

[00:03:57] Dr. Jup Kuipers: All right, Dr. Kuipers, where does chronobiology fit [00:04:00] into this discussion on the metabolic side? 

[00:04:02] Dr. Jup Kuipers: So circadian transcription factors like CLOCK and BMAL1 drive the expression of NAMPT, the rate-limiting enzyme in the NAD+ salvage pathway.

[00:04:14] Dr. Jup Kuipers: So when circadian rhythms are disrupted by late-night artificial light or shift work, NAMPT oscillations flattens. Cellular NAD+ pools contract and SIRT1 activity drops. And these sirtuins, they require NAD+ to regulate histone deacetylation and DNA repair. Disrupt circadian timing, and you impair epigenetic maintenance.

[00:04:36] Dr. Scott Sherr: Yeah, Yep, and here's what practitioners often make as a conceptual mistake. Preventative medicine aims to prevent disease but remains disease-centered. Health Optimization Medicine is health-centered. It measures and tunes cellular cofactors, redox balance, and a metabolic flux before structural damage occurs.

[00:04:54] Dr. Allen Bookatz: Exactly, Dr. Scott. And from the longevity perspective, lifespan without [00:05:00] healthspan is not the win. The goal here isn't merely adding years to your calendar. It's maintaining that peak biological quality of life, and in this case, cognitive clarity. 

[00:05:10] Dr. Scott Sherr: The Health Optimization Medicine Conference is happening.

[00:05:13] Dr. Scott Sherr: Two days of events, October 2nd and 3rd, Chicago, Illinois, at the Drake Hotel. CMEs available to practitioners who need them. Just 150 people with amazing speakers on the cutting edge of health and wellness. This is a community. It's not your average conference. If you're interested, go to homehope.org and save 25% on your ticket by using CONFERENCE25 at checkout.

[00:05:34] Dr. Scott Sherr: I hope to see you there. 

[00:05:35] Boomer Anderson: All right, so now it's perhaps my favorite time in the podcast where we're gonna get into the one-cent solution. So these are the three things that you guys can do. How do we translate this into a structured clinical framework? 

[00:05:46] Dr. Allen Bookatz: I think we call this phase one. Well, we're gonna measure and we want to unburden the cell environment.

[00:05:52] Dr. Allen Bookatz: So first, we establish the baseline phenotype, and we do that by measuring things like organic acids, lipid peroxidation markers, [00:06:00] NAD+ salvage metabolites and pathways, vascular markers, and circadian sleep-wake parameters. And so really talking to the person, getting a sense like what is, what is their lifestyle like?

[00:06:11] Dr. Allen Bookatz: Then we wanna identify and reduce the exposomic stressors, so things like the lipophilic toxins, chronic nighttime light pollution, and those unmanaged glycemic variability. Hint, hint, nighttime snacking. 

[00:06:25] Dr. Ted Achacoso: And toxic partners. 

[00:06:26] Dr. Jup Kuipers: And, 

[00:06:26] Dr. Allen Bookatz: and toxic partners. 

[00:06:27] Dr. Jup Kuipers: And toxic partners. And once we've got rid of our toxic partners, kidding, we move to phase two, reestablish circadian and bioenergetic alignment.

[00:06:35] Dr. Jup Kuipers: So align circadian cues to restore NAMPT oscillations. Anchor morning outdoor light within 30 minutes of waking. Eliminate high-intensity evening light, and maintain consistent meal timing. Things like this support mitochondrial substrate delivery and redox balance based strictly on measured metabolomic deficits.

[00:06:55] Dr. Scott Sherr: Hmm, yes. And so what phase three is, is tracking longitudinal [00:07:00] multi-domain outcomes. So what this means is retesting objectively. Evaluate whether cognitive performance, functional capacity, vascular markers, metabolic flexibility, and biological age indicators move in unison over six to 12 months. An intervention is only effective if the broader biological network confirms improvement.

[00:07:19] Boomer Anderson: All right, so Dr. Ted, you know, this podcast comes out on Wednesday. What should people be doing by Monday? 

[00:07:25] Dr. Ted Achacoso: Well, if you're a practitioner or individual addressing APOE4, do not start by purchasing 10 unquantified supplements. 

[00:07:33] Boomer Anderson: Who does 

[00:07:34] Dr. Ted Achacoso: that? All of us do. Mm-hmm. On Monday, audit circadian light exposure. Get 10 to 15 minutes of natural morning light, or if you can't do that, get yourself a vitamin D lamp.

[00:07:46] Dr. Ted Achacoso: Dim evening environment after sunset. You know, you can have bulbs there that actually take the blue out gradually from your evening light. And schedule baseline metabolomic testing to guide any subsequent protocol, meaning your [00:08:00] supplements have to be guided by the results of your metabolomic tests. 

[00:08:04] Boomer Anderson: All right, gents, I have to ask you for MDs.

[00:08:06] Boomer Anderson: What could we be wrong about here? 

[00:08:08] Dr. Scott Sherr: Yeah. Here, so let's, let's do this deal, man, as we do all the time in this podcast, right? What, what is the skeptical position? So a neurologist or a geneticist might say APOE4 is a major structural driver of amyloid and tau pathology. Lifestyle and metabolic tuning cannot overcome strong monogenic penetrance or prevent eventual neurodegeneration.



[00:08:28] Dr. Allen Bookatz: Yeah, that's definitely fair, and it's an important objection. And I think when we understand what penetrance means, at least in this case, high penetrance is the... means basically that the biological slope itself is steep. So while we don't claim that lifestyle advice alone halts the progression to advanced pathology, and w- no one's claiming that here, but lifestyle advice becomes precision medicine when cell health markers guide the prescription.

[00:08:55] Dr. Allen Bookatz: By optimizing the mitochondrial bioenergetics, vascular integrity, and [00:09:00] circadian NAD salvage pathways, we improve the cellular terrain in which that genetic risk operates. 

[00:09:05] Boomer Anderson: All right, so real quick, take home three from you guys. Uh, Dr. Bookatz, I'm gonna volley right back to you on this one. Yeah. 

[00:09:11] Dr. Scott Sherr: Okay. So your genotype is not your biography.

[00:09:15] Dr. Allen Bookatz: So one copy of this APOE4 certainly raises risk. Two copies increases the penetrance. So phenotype early instead of being fatalistic here. 

[00:09:26] Boomer Anderson: Dr. Ted, you get round two. 

[00:09:28] Dr. Ted Achacoso: Yes, you cannot supplement out of circadian misalignment. BMAL1 drives an NAMPT. Light anchoring comes first. So wake up in the morning, anchor yourself in the morning light, and in the evening, decrease your blues and just like mimicking a sunset.

[00:09:46] Dr. Jup Kuipers: All right. Sorry to skip you this week, Scott, but Dr. Kuipers, you get number three. 

[00:09:50] Dr. Jup Kuipers: Okay. So let's take it home. The reset is a claim that must be earned with durable cognitive, functional, and biomarker improvements [00:10:00] across time. And on that note, I'm gonna sign you guys off. Thank you all for listening to the Health Optimization Medicine podcast.

[00:10:07] Dr. Jup Kuipers: If you're a physician or health care provider ready to learn clinical metabolomics, exposomics, bioenergetics, epigenetics, and chronobiology as one coherent system, join HOMeHOPe Certified Practitioner Program at homehope.org. We'll see you guys next week. 

[00:10:25] Boomer Anderson: Sayonara 

Bye.