The Longevity Podcast: Optimizing HealthSpan & MindSpan

Light That Fights Alzheimer’s

Dung Trinh

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Alzheimer’s is coming at the world like a demographic tidal wave and the hardest part is admitting what we still can’t do: there’s no cure. But what we can do is changing quickly, and the most surprising shift is where the real cognitive gains might come from. We dig into a major 2026 Bayesian network meta-analysis spanning 57 randomized controlled trials and 6,737 people, asking one high-stakes question: when the goal is improving global cognitive function, do prescription drugs actually come out on top, or can non-pharmacological interventions outperform them?

We walk through the medication baseline first, including familiar options like donepezil and memantine, plus sodium oligomannate and the gut-brain axis angle, and we talk honestly about modest effect sizes and the side effects that make adherence and quality of life harder. Then the results take a turn: photobiomodulation (PBM) light therapy ranks as the strongest performer, and we unpack how near-infrared wavelengths may support mitochondria, ATP production, reduced neuroinflammation, and even changes tied to amyloid beta. We also explore the runner-up, enriched environment therapy, where immersive and multi-sensory stimulation can push neuroplasticity through BDNF and hippocampal changes.

Finally, we tackle the interventions people feel sure must work. Exercise has real biological advantages but real safety constraints in older adults at risk of falls. Music therapy can be deeply meaningful and improve mood, yet may not translate into sustained gains on strict cognitive scales. If external inputs like light and complexity can reshape Alzheimer’s biology, we end with a question that’s hard to shake: what are our everyday fluorescent lights and under-stimulating environments doing to healthy brains? Subscribe, share this with someone navigating dementia care, and leave a review with your biggest takeaway.

This podcast is created by Ai for educational and entertainment purposes only and does not constitute professional medical or health advice. Please talk to your healthcare team for medical advice. 

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The Alzheimer’s Wave And No Cure

SPEAKER_00

In 2023, there were um over 55 million cases of Alzheimer's disease worldwide. And by the year 2050, global health organizations project that number is going to explode to like 139 million.

SPEAKER_01

Yeah, it's a massive demographic tidal wave, truly.

SPEAKER_00

It really is. And you know, the most frustrating part is that usually when we talk about a medical diagnosis, there's this expectation of a straight line. Like uh if you have a broken car engine, you find the single faulty spark plug, you replace it, and the engine just runs again.

SPEAKER_01

Right.

SPEAKER_00

But with neurodegenerative conditions, that clean, you know, binary engineering manual is just completely useless.

SPEAKER_01

Aaron Powell Oh, totally useless. I mean, the human brain is the ultimate black box. And neurodegeneration, it just doesn't play by the rules of simple mechanics. We desperately want our medical problems to be, you know, highly visible and easily categorized. But Alzheimer's operates on this microscopic, deeply complex systemic level.

SPEAKER_00

Aaron Powell, which is terrifying, honestly.

SPEAKER_01

It is. And the sober and reality you have to confront is that right now there is no cure. Period. However, the way we manage the disease, the way we intervene to uh slow that cognitive decline down, it's currently undergoing a really radical, fundamental shift.

SPEAKER_00

Aaron Powell, which is exactly why we are diving into this today. Welcome to the deep dive. For you

The 57-Trial Showdown

SPEAKER_00

listening, our resident learner, we're bringing you something that challenges basically everything we think we know about cognitive decline. It's a big one. Huge. We are looking at a groundbreaking 2026 study published in the Journal of Prevention of Alzheimer's disease. And it is a massive Bayesian network meta-analysis.

SPEAKER_01

Yeah, the scale is incredible.

SPEAKER_00

We are talking about 57 distinct randomized controlled trials analyzing uh 6,737 individuals. And the mission for this deep dive is to answer one crucial high-stakes question. When it comes to actually improving cognitive function in Alzheimer's patients, do our traditional prescription drugs actually work best? Or, and this is the crazy part, can non-drug therapies completely outperform them?

SPEAKER_01

It's basically the ultimate scientific head-to-head. I mean, they essentially put all of these interventions into one giant analytical arena.

SPEAKER_00

Okay, let's unpack this because the sheer scale of this data is what makes it so revolutionary. Usually when you read a medical study, it's operating in isolation, right?

SPEAKER_01

Right, like drug A versus a placebo.

SPEAKER_00

Exactly, drug A versus a sugar pill. But this study takes six entirely different interventions, both pharmacological and non-pharmacological, and just pits them against each other to see what truly moves the needle. We are talking about highly engineered pills going up against, well, light therapy, enriched environments, physical exercise, and music.

SPEAKER_01

Yeah. What's fascinating here is the methodology they use to actually achieve that comparison. As you mentioned, it's a Bayesian network meta-analysis.

SPEAKER_00

Which sounds incredibly dense.

SPEAKER_01

It does, it does. But for you listening, if you don't spend your days, you know, reading statistical modeling, what this essentially means is that it combines direct and indirect evidence.

SPEAKER_00

Aaron Powell Okay. How does that work in practice?

SPEAKER_01

Well, let's say trial one directly compares a drug to a placebo. And then trial two compares a light therapy to a placebo. The Bayesian network uses these advanced statistical algorithms to map out exactly how that drug would likely perform against that light therapy.

SPEAKER_00

Aaron Powell Oh, even if they were never directly tested against each other in the same room.

SPEAKER_01

Exactly. It synthesizes all these isolated trials to create a definitive hierarchy, like a ranking of overall effectiveness. And uh the preview of the result here is going to completely subvert your expectations.

SPEAKER_00

I mean, it blew my mind.

SPEAKER_01

Aaron Powell Right. Because when we look at the data for improving global cognitive function, the top two most effective treatments are not chemical pills.

SPEAKER_00

Aaron Powell That is just a staggering paradigm shift.

What Drugs Really Deliver

SPEAKER_01

Yeah.

SPEAKER_00

But I feel like to truly appreciate how revolutionary these alternative therapies are, we have to um establish the medical baseline first.

SPEAKER_01

Yeah, definitely.

SPEAKER_00

Aaron Powell We need to know what the standard guidelines recommended medical route looks like and exactly how well it performs today.

SPEAKER_01

Aaron Powell We have to know the score to beat. So in this study, they evaluated the standard pharmacological therapy group and it achieved a SUCRA score of 54.7 percent.

SPEAKER_00

Aaron Powell Okay. SUCRA score, what is that exactly?

SPEAKER_01

Aaron Powell SUCRA stands for surface under the cumulative ranking curve.

SPEAKER_00

Yeah, cheat.

SPEAKER_01

Yeah, right. But just think of it as a probability percentage. A score of 54.7 percent tells you that if you pull this treatment off the shelf, it has roughly a coin toss chance of being the absolute best option available.

SPEAKER_00

Aaron Powell So better than nothing, but not exactly a silver bullet.

SPEAKER_01

Aaron Powell Precisely. It shows undeniable clinical benefit compared to doing nothing, but it is, you know, far from perfect.

SPEAKER_00

Aaron Powell So what exactly is inside that 54.7%? Because we aren't just talking about one magic pill here, are we?

SPEAKER_01

Aaron Powell No, not at all. The researchers analyzed three heavily prescribed drugs. First is dunpeas, which is a cholinesterase inhibitor. Second, mimantine, an NMDA receptor antagonist. Okay. And third, a much newer intervention originating from China called sodium oligomanate. And to really understand why these yielded a moderate 54.7% score, you have to look at their mechanisms.

SPEAKER_00

Let's break those down.

SPEAKER_01

Sure. So Dunpeasil targets the way neurons communicate. Healthy neurons send signals across gaps using a chemical called acetylcholine. In an Alzheimer's brain, those signals basically degrade.

SPEAKER_00

Right. The connection gets fuzzy.

SPEAKER_01

Yeah. So Dunpeasel essentially blocks the enzymes that eat up acetylcholine, leaving more of it in the brain to boost that uh cholinergic signal transmission.

SPEAKER_00

Aaron Powell I want to translate this back to that carton analogy to make sure we are visualizing this correctly. Go for it. If the Alzheimer's brain is a struggling, misfiring engine, Dunpeasel is like pouring in a highly specialized premium oil. Like it doesn't rebuild the engine, but it lubricates the communication gear so the signals can travel a bit more smoothly. Does that track?

SPEAKER_01

That is a highly accurate way to frame it, actually.

SPEAKER_00

Okay, good.

SPEAKER_01

And then Mementine, the second drug, addresses a completely different mechanical failure. So in moderate to severe Alzheimer's, the brain suffers from excitotoxicity.

SPEAKER_00

Aaron Powell, which means what? Exactly.

SPEAKER_01

Essentially, the neurons are being bombarded by an excitatory signal called glutamate. It basically gets stuck in the on position, flooding the cell with calcium until the neuron literally brains itself out and dies.

SPEAKER_00

Wow. Okay, so it over-revs the engine.

SPEAKER_01

Yes. So mementine acts as a targeted cooling system. It sits on those NMDA receptors and physically blocks that overwhelming signal, preventing the neural engine from overheating.

SPEAKER_00

And then we have the third drug, sodium oligomanate, which just seems like a complete wildcard to me.

SPEAKER_01

It really is unique.

SPEAKER_00

Because it doesn't even work directly in the brain. It operates down in the gut to fix the fuel supply, basically. It reshapes the intestinal flora to reduce abnormal amino acids that travel up the gut brain axis and cause neuroinflammation.

SPEAKER_01

Right. The pharmacology is undeniably clever. But, you know, we have to look at the clinical reality here. These chemical interventions are the standard of care, yet their success is categorized strictly as moderate.

SPEAKER_00

Right.

SPEAKER_01

The study measured this using a standardized mean difference, or SMD. The pharmacological group had an SMD of 0.36.

SPEAKER_00

And just to clarify for you listening, an SMD of 0.36 means the improvement is visible, like perhaps the patient recalls a name slightly faster or has a marginally better day, but it is a small incremental shift.

SPEAKER_01

Aaron Powell Exactly. It isn't some structural life-altering reversal.

SPEAKER_00

And we also have to factor in the collateral damage because you can't flood the human body with chemical inhibitors without a cost.

SPEAKER_01

Precisely. The adverse side effects are a major, major limiting factor here. We are seeing bradycardia, which is a dangerously slowed heart rate. There are severe gastrointestinal symptoms. And in some cases, these drugs can even induce altered mental states.

SPEAKER_00

Oh wow.

SPEAKER_01

Yeah. You have a combination of moderate cognitive efficacy that 0.36 SMD paired with high adverse effects. And that friction is exactly what has driven the scientific community to hunt for alternative mechanisms of neuroplasticity that don't rely on toxic chemical intervention.

SPEAKER_00

Okay, so that sets our baseline. Highly engineered pharmaceuticals achieve a 54.7% effectiveness ranking. So if chemical interventions are maxing out at a coin toss, what actually takes the top spot in this massive analysis?

Light Therapy Takes The Crown

SPEAKER_01

The undisputed champion of this meta-analysis is a physical intervention called photobiomodulation or PBM.

SPEAKER_00

Light therapy.

SPEAKER_01

Light therapy. It scored an overwhelming 87.3% UCRA score with an SMD of 0.66. It effectively doubled the standardized mean difference of traditional drugs when it came to improving cognitive function.

SPEAKER_00

See, I am still trying to wrap my head around this finding because the actual protocol for photobiomodulation just sounds bizarre.

SPEAKER_01

Sounds like sci-fi.

SPEAKER_00

It really does. The study details the use of low-level red or near intrared light specifically, wavelengths between 800 and 1080 nanometers. And you know, if a doctor shines a focused light on a patient's cranium, I can maybe intuitively grasp that we are trying to target the brain tissue. Sure. But they were also applying these light panels to the patient's abdomens and specifically to their wrists for six to thirty minutes multiple times a week. Wait, shining a red light on a patient's wrist can improve brain function and outperform a highly engineered pharmaceutical compound? Like how is that logically possible? Yeah. You have to push back on that.

SPEAKER_01

The skepticism is completely warranted, I get it. But the mechanism is grounded in profound systemic biology. We have to look at what happens at a cellular level when biological tissue absorbs light. Yeah. Inside our cells are mitochondria, right? The powerhouses that generate energy. These mitochondria contain photoreceptors, specifically an enzyme called cytochrome slic oxidase. When those specific 800 to 1080 nanometer wavelengths hit that enzyme, it physically absorbs the photon.

SPEAKER_00

So it is quite literally like photosynthesis for human cells. The cell is eating the light to create energy.

SPEAKER_01

That is the exact mechanism. By absorbing that light, the mitochondria massively boosts the production of ATT, which is cellular energy. In an Alzheimer's brain, energy metabolism is severely compromised. I mean, the brain is essentially starving. Wow. Now, to address your specific question about the wrist, how does light on the wrist help the brain? Well, the wrist is highly vascular. When you irradiate the blood flowing through the radial artery in the wrist, you are stimulating the mitochondria within the immune cells and red blood cells.

SPEAKER_00

Oh, I see where this is going. Yeah. Those supercharged, energized cells then travel through the bloodstream directly to the brain. Once there, they trigger a systemic healing cascade. They drastically reduce neuroinflammation, promote nerve regeneration, and most importantly, this process has been shown to physically lower the levels of amyloid beta, the toxic senile plaques that define Alzheimer's disease.

SPEAKER_01

That is just astonishing. The blood basically acts as a highway to deliver the physical light energy straight into the cranial vault.

SPEAKER_00

Exactly.

SPEAKER_01

And the study notes that from an economic standpoint, the hardware is remarkably accessible too. The devices range from 2,000 euros to 1,000 euros. In the realm of medical equipment, that makes it one of the most economical, non-invasive brain stimulation techniques available.

SPEAKER_00

Yeah. If we connect this to the bigger picture, this data fundamentally challenges a deeply ingrained bias in modern medicine. How so? Well, we are conditioned to believe that a serious complex disease requires a complex chemical pill. We have a very heavy bias toward pharmacology. But here, physical energy-specific wavelengths of light is proving vastly superior for cognitive function.

SPEAKER_01

It's wild to think about. It is important to clarify, though, that currently PBM is utilized as an adjuvant, meaning it is an add-on to standard drugs, not a total replacement right now.

SPEAKER_00

Ah, okay. That's a good distinction.

SPEAKER_01

But a massive benefit is the lack of caregiver burden. It is administered by health professionals in a clinic. The family doesn't have to manage complex medication schedules or, you know, fight with a confused patient to swallow a pill. The patient simply sits there and the physics of the light does the work.

SPEAKER_00

Okay, so targeted physical light energy systemically alters the brain. That makes sense now. But what if the energy isn't a focused laser or an LED panel? What if it's the actual ambient environment the patient is sitting

Enriched Environments And Cognitive Training

SPEAKER_00

in?

SPEAKER_01

Right.

SPEAKER_00

Like, does a complex external environment trigger a similar physical change internally? Because the runner-up in this study operates on that exact premise.

SPEAKER_01

It does. Coming in closely behind light therapy is something called enriching environment or EE, achieving a really impressive 83.8% UCRA score.

SPEAKER_00

And the study defines an enriching environment as multimodal and multi-sensory. This is not just putting a patient in a quiet room with a nice window.

SPEAKER_01

No, no.

SPEAKER_00

We are talking about active interventions, immersive virtual reality setups, highly interactive, tactile gardens, and incredibly detailed themed games.

SPEAKER_01

Yeah, very engaging stuff.

SPEAKER_00

But again, I am looking at this through the eyes of a frustrated family member. Is this just an academic way of saying keeping the patient busy and entertained? How does putting a VR headset on a patient translate into actual measurable clinical change in a physically degenerating brain?

SPEAKER_01

It's a fair question. But the distinction between entertainment and neurological enrichment is crucial here. The brain doesn't actually know the difference between physical reality and a deeply immersive VR environment.

SPEAKER_00

Oh, really?

SPEAKER_01

Right. When you force an Alzheimer's patient to process new spatial dimensions, vibrant colors, and novel interactive tasks, the brain perceives it as a sudden influx of complex environmental demands. And this triggers an ancient survival mechanism. Which is the brain realizes it needs to map new territory, so it heavily secretes brain-derived neurotrophic factor, or BDNF.

SPEAKER_00

Oh, which operates essentially like miracle grow for the neural pathways.

SPEAKER_01

Aaron Powell Precisely. BDNF actively encourages the growth of new neurons and forces the creation of new synapses. The clinical scans in these trials actually show that enriched environments enhance hippocampal synaptic density.

SPEAKER_00

Aaron Powell Meaning the brain gets physically denser.

SPEAKER_01

Aaron Powell Exactly. That means the hippocampus, the memory center of the brain, literally gets thicker and better connected.

SPEAKER_00

That's incredible.

SPEAKER_01

Furthermore, this intense cognitive engagement drastically reduces pro-inflammatory cytokines.

SPEAKER_00

Those are the chemical messengers that sound the inflammatory alarm in the body, right?

SPEAKER_01

Yes, exactly. So by suppressing those inflammatory alarms, the environment physically reshapes the internal architecture of the brain, actively slowing down the accumulation of senile plaques.

SPEAKER_00

Aaron Powell So the external environment directly dictates the internal chemistry. That's fascinating. And closely related to that environmental stimulation, the study also evaluated cognitive stimulation therapy, or CST.

SPEAKER_01

Yeah, CST scored a 48.9% on the SECRA ranking. So lower, but still significant. It consists of structured, rigorous group or individual activities that specifically target multiple cognitive domains simultaneously.

SPEAKER_00

Okay, like what kind of domains?

SPEAKER_01

Basically forcing the patient to use memory, executive function, and language all at once.

SPEAKER_00

So it's a structured mental workout.

SPEAKER_01

Basically, yeah.

SPEAKER_00

What stood out to me in the data regarding CST was the sheer cost effectiveness. The study measured its impact in the UK, noting that it costs roughly twelve hundred, two hundred and twenty-three to achieve a one-point improvement on the mini mental state examination, the MMSE. Right. For a strained healthcare system, that is an incredibly efficient return on investment.

SPEAKER_01

It is highly efficient in terms of financial cost, but um we must acknowledge the human cost here. Oh, the caregivers. Yeah. CST often requires extensive caregiver training. The family members or the nursing staff have to learn exactly how to administer these structured activities to ensure they remain therapeutic rather than just becoming confusing for the patient.

SPEAKER_00

Aaron Powell Which makes sense. For families already stretched to their absolute emotional limits, adding the role of cognitive therapist can be a really heavy burden.

SPEAKER_01

Aaron Powell It's a huge ask. However, for mild to moderate dementia, the data is very clear that it is a highly effective, non-toxic tool.

SPEAKER_00

Aaron Powell Okay. So we have established that the external environment literally changes the brain's physical structure. But what about the movement of our physical bodies within that environment or like the emotional art we consume?

Exercise Risks And Music Myth

SPEAKER_01

Trevor Burrus Right, the body-brain connection.

SPEAKER_00

Exactly. And frankly, this is where the data delivers a massive counterintuitive letdown.

SPEAKER_01

Yeah. We need to evaluate the final two interventions exercise therapy, ET, and music therapy, MT. Let's look at exercise first. Okay. It achieved a 40.8% SUCRA score, which is lower, but the underlying mechanism makes complete biological sense. Aerobic and resistance training enhanced cerebrovascular health.

SPEAKER_00

Right. You pump your legs, you increase the heart rate, and you force a massive wave of blood, oxygen, and nutrients into the brain tissue.

SPEAKER_01

Exactly. It also triggers that BDNF miracle grow effect we talked about earlier.

SPEAKER_00

But if it forces blood and oxygen into the brain, why is it scoring at 40.8%? I mean, that is lower than the chemical pills, lower than the light therapy, and lower than the VR environment.

SPEAKER_01

It is. And the clinical drop-off here is largely due to the severe risks of implementation.

SPEAKER_00

Ah, the danger of falling.

SPEAKER_01

Precisely. When you are dealing with an elderly demographic suffering from cognitive decline, their spatial awareness and balance are already heavily compromised. The risk of devastating falls or injuries during structured high-intensity exercise is extremely high.

SPEAKER_00

That completely makes sense.

SPEAKER_01

Yeah. Consequently, physical therapists and caregivers are understandably reluctant to push the patient's heart rate to the intense levels actually required to trigger those profound cognitive benefits. The mechanism works in theory, absolutely, but it is dangerously difficult to administer safely at scale.

SPEAKER_00

Here's where it gets really interesting because we have to address the abs uh the absolute bombshell of this 57 trial meta-analysis, music therapy.

SPEAKER_01

Yeah, this one surprises a lot of people.

SPEAKER_00

Because it is practically free. The researchers noted that throwing together a personalized playlist costs about $20. But music therapy ranked completely dead last.

SPEAKER_01

It did.

SPEAKER_00

It achieved a 32.9% UCRA score. And the researchers explicitly state that it showed no statistical difference from the control group in improving global cognitive function. I'm going to push back incredibly hard on this. Everyone listening to this right now has seen those viral videos online. You know the ones. You see a patient who is completely nonverbal, just slumped in a chair. A nurse puts a pair of headphones on them, plays a jazz song from their youth, and instantly the patient's eyes open wide. They start singing along, tapping their feet, suddenly remembering their childhood. How on earth can a study of nearly 7,000 people claim that music therapy shows no statistical difference?

SPEAKER_01

This raises an important question, and it is vital that we differentiate between what makes a heartwarming video and what constitutes measurable neurological repair. Okay. We have to provide some crucial scientific nuance here. When a patient hears a deeply nostalgic song, it triggers a massive localized cascade of dopamine in the emotional centers of the brain.

SPEAKER_00

Which creates that spark.

SPEAKER_01

Yes. That creates an undeniable immediate emotional resonance. It temporarily improves their mood and can briefly awaken vocal domains. But there is a massive gulf between a temporary emotional spark and a sustained global cognitive improvement.

SPEAKER_00

So you are saying the music floods the engine with a temporary burst of high octane fuel, but it does absolutely nothing to fix the structural degradation of the engine itself. Once the song ends, the baseline deterioration remains identical.

SPEAKER_01

That is the harsh biological reality. When scientists measure global cognitive function using strict clinical scales over the course of months, that temporary dopamine hit just does not translate to the physical reduction of amyloid plaques or the thickening of hippocampal tissue.

SPEAKER_00

That is so tough to hear, honestly.

SPEAKER_01

It is. Furthermore, from an analytical standpoint, the heterogeneity of music therapy trials is basically a statistical nightmare.

SPEAKER_00

What do you mean by heterogeneity?

SPEAKER_01

Well, in some trials, the patient is passively listening to a playlist. In others, they are actively participating in choir singing or attempting to bang on a tambourine. Because the application is so wildly inconsistent across different clinics, it is nearly impossible to standardize and prove clinical efficacy as a primary medical intervention.

SPEAKER_00

I see.

SPEAKER_01

It provides immense, deeply valuable personal joy, which absolutely improves the quality of daily life. We can't discount that. But if the goal is to halt the physiological march of cognitive decline, the data proves it just cannot compete with targeted light energy or complex environmental enrichment.

SPEAKER_00

Wow. That is a heavy, difficult realization to process. But you know, it makes complete logical sense when you separate the emotional response from the hard clinical architecture of the brain.

SPEAKER_01

Exactly.

SPEAKER_00

So what does this

The New Playbook And Final Question

SPEAKER_00

all mean? Let's bring all this dense data back down to earth for you, our listener. If you are navigating the terrifying landscape of cognitive health right now, whether you are looking at your own longevity or managing the care of an aging parent, this deep dive proves that medical treatment in 2026 is no longer just about passively waiting for a doctor to prescribe a moderate efficacy pill with terrible side effects.

SPEAKER_01

Right. It's much broader than that now.

SPEAKER_00

The future of managing Alzheimer's is a dynamic, holistic, multimodal approach. It is about the specific physical light wavelengths we expose our cellular mitochondria to. It is about the complex, multi-sensory environments we inhabit that force our brains to adapt. The power to fight back is expanding far beyond the pharmacy counter.

SPEAKER_01

The landscape has fundamentally changed. And uh as we wrap up, I want to leave you with a final lingering thought to explore on your own.

SPEAKER_00

I love these.

SPEAKER_01

We have just spent this time learning that very specific near-infrared light wavelengths and deeply enriched, complex environments are physically powerful enough to alter the brains of Alzheimer's patients. They can literally reduce toxic senile plaques and force the creation of cellular energy in a brain that is actively dying. Right. If those external environmental factors possess the biological power to push back against one of the most severe neurodegenerative diseases known to humanity, what is our daily exposure to harsh artificial fluorescent office lighting and monotonous, under-stimulating gray cubicle environments doing to our healthy brains right now?

SPEAKER_00

Oh man. That is a brilliantly terrifying question. Are we actively starving our healthy neural engines of the light and spatial complexity they need to survive? That is absolutely something to deeply consider the next time you sit perfectly still under a buzzing fluorescent tube. Thank you so much for joining us on this journey into the future of cognitive health. We hope it has gave you the critical shortcut to being truly well informed of where the science of the human brain is heading. Keep the question in the baseline, keep challenging the data, and as always, keep diving deep.