In this YouTube presentation, Nick Norwitz, a PhD researcher who is a homozygous APOE4 carrier, explains why most over‑the‑counter omega‑3 supplements fail to protect the brain and what form of omega‑3 actually reaches the brain. He outlines the "Omega‑3 Paradox"—the strong epidemiological link between fatty‑fish consumption and reduced Alzheimer’s risk versus the disappointing results of DHA supplement trials. The core of his argument is that DHA must be delivered as lysophospholipid DHA (lysodHA), which is recognized by the brain‑specific transporter MSFD2A. Animal studies show lysodHA dramatically raises brain DHA levels, boosts brain‑derived neurotrophic factor (BDNF), and improves maze performance compared with conventional triglyceride DHA that is shunted to adipose tissue. He cites rare human cases with MSFD2A loss‑of‑function that develop severe neurodevelopmental deficits, underscoring the transporter’s importance. Norwitz then provides a concrete action plan: (1) eat low‑mercury fatty fish (salmon, sardines, mackerel, anchovies, herring) at least twice weekly; (2) consider a lysodHA‑enriched supplement such as Accentrate Omega Max (Lysovita) – he discloses a 20 % discount code STAYCURIOUS; (3) alternative natural sources like krill oil, fish roe, or animal brain extracts (with prion caveats). He rounds out the protocol with three additional neuroprotective measures: low‑dose lithium orotate (5 mg daily), regular high‑intensity exercise (to release myokines like irisin that raise BDNF), and creatine supplementation (15‑20 g/day) for cognitive benefit. Throughout, Norwitz frames the content as empowerment for people at genetic risk of Alzheimer’s, urging curiosity and proactive lifestyle choices.
Chapters
Let me show you a fishy truth. Most omega-3 supplements don't work. Specifically, most omega-3s fail to protect the brain because they're delivered in the wrong biochemical package. But there is a form of omega-3 that has a dedicated transporter to get into the brain, but here's the catch: almost no supplements contain it. I'm gonna unpack this for you, tell you where to find it, but first a personal disclosure. This matters immensely to me, not just because I have a PhD in the topic, but because I'm I'm personally at high risk. I carry a double dose of the major risk gene variant for Alzheimer's disease. And when I first found out, I was terrified. But then I realized that information wasn't a curse. It was and is a privilege. It was motivation to learn, to act, so that a predisposition in my genes doesn't become destiny. And that is the real purpose of this video: information and empowerment. And while there's a lot that goes into Alzheimer's prevention, today, we're going to focus on the most important nutrient for brain health: omega-3s. I'll explain what omega-3s actually make it into the brain, provide specific product guidance, and non-supplemental changes you can start making today. So let's dive in. The results are generally disappointing. Not all DHA forms are the same, but these data clearly show that the packaging matters immensely. For the lysodha-treated mice, they solve the maze in under 5 seconds. This is a tremendous improvement in cognitive performance. The difference could not be more striking. The action plan. You cannot, you cannot. First, a bit of housekeeping. As always, if you want all the references and more nuances, you can check out the Stay Curious Metabolism newsletter linked below. That's also where you can get early access to information like that you're about to learn. Second, I want to be upfront with you. I will mention a product in this video. The point of the video is not the product per se, but the evidence does point towards a solution that has been commercialized into a product and it's one I genuinely use and recommend to my parents. Now, if you're not interested in supplements, this video will still give you valuable practical actionable information. In fact, honestly, I wasn't even planning on making this video in the first place, but the newsletter resonated so strongly that many of you asked for a video walkthrough, so here Here we are. Anyway, perhaps unnecessary disclaimers aside, here's the roadmap for this video. First, we're going to cover the omega-3 paradox. Second, we're going to cover the express courier to the brain, the biology of why omega-3 delivery systems really matter. And then third, we're going to move into the action plan, how to apply this science. And fourth, we're going to talk about other neuroprotective strategies to help ensure Alzheimer's doesn't end up as part of your future. Now, let's start with Chapter 1: The Omega-3 Paradox. There's abundant evidence that eating fatty fish—think salmon and sardines—is associated with reduced rates of Alzheimer's disease, all dementia, and slower cognitive decline. But when we try to replicate those benefits in randomized controlled trials using omega-3 supplements, the results are generally disappointing. I'll give you an example. Take this randomized controlled trial published in JAMA. Participants were given 2 grams per day of DHA, which is a solid dose, and DHA is the most important form of omega-3 for the brain. Yet the intervention group didn't have any slowed cognitive decline or functional improvements in memory in people with mild to moderate Alzheimer's, which is really disappointing. Now, there could be a few reasons for this, but one I want to zero in on in particular is the form of omega-3. For emphasis, again, DHA is the most important form of omega-3 for the brain, but that's not what I mean by form. DHA plays a critical role in structure, reducing inflammation, boosting BDNF, and more, but not all DHA forms are the same. If omega-3, say DHA, were like a message, think of the packaging, the form, as an addressed envelope. It tells the omega-3 letter where to go, and you need the right envelope, postage, to get it where you need it to go, which is the brain. Common forms, packages, include triglyceride, this is the common storage form of fat in the body, phospholipid ethylesters, and specifically a lesser-known form called lysophospholipid DHA, or lysodHA for short. Don't worry, I'm going to explain all of this. But first, now let's get back to the randomized controlled trial. Check this out. If you look at the methods section of this JAMA study showing negative results on Alzheimer's disease, you'll see the DHA came in a form called algae oil which contains mostly the triglyceride form of the DHA and almost no lysodHA. Why does that matter? Well, that brings us straight to Chapter 2: The Express Courier. Specifically, the lysodHA form of omega-3 has access to the brain via a special transporter called MSFD2A. This transporter helps deliver DHA directly to the brain, something other forms struggle to do. Another way to think about this, just to reinforce the analogy, is to imagine DHA as a really important letter you're trying to deliver to the brain, and if you send it without the right address, It goes to the wrong place, and it doesn't matter how good the letter is, it doesn't end up where you want it, so it's not going to have the impact you want it to have. LysodHA is the correct address and stamp on the omega-3 letter. It's the form that gets DHA delivered right to the brain. LysodHA is the express courier of DHA omega-3 to the brain. And this could explain why supplements often fail while fish prevail, because fish contain relatively more phospholipid-form DHA than most over-the-counter supplements. Although there are more nuances here, different fish vary in amounts, and we'll get to more on that later. Anyway, before we do that, let's not just talk theory, let me show you biological proof. One study that beautifully demonstrated this point was conducted in mice, and before you doth protest, yes this study needed to be conducted in animals because you can't chop off human heads and harvest human brains after the intervention. Unless you want to volunteer for that study, I know I don't. Anyway, they gave the mice DHA either as conventional DHA or this lysodHA express carrier. And the researchers found that lysodHA more than doubled brain DHA levels. Importantly, this was very different than what was seen with the free conventional DHA, which did not increase brain DHA levels, but instead got shunted to fat, fat cells. And you can see that here. The tall red bar shows how conventional DHA in your standard omega-3 supplement mostly ends up in fat tissue, not the brain. This isn't bad per se, it can still provide benefits for whole body health, but it's not getting to the brain like lysodHA, which you can see here, these are the green and light blue bars. Pause and think about that for a moment. We talk about omega-3s, including DHA, without ever really discussing the biochemical packaging in which they're delivered. But these data clearly show that the packaging matters immensely. Conventional DHA went to fat tissue, whereas lysodHA went to the brain. And there is striking downstream consequences. For example, lysodHA boosts levels of brain-derived neurotrophic factor more than the conventional DHA, which is like Miracle-Gro for brain cells, and it improved cognitive performance tremendously, whereas again conventional DHA did not. These, for example, are the results from a water maze test, where the y-axis represents the time it took for mice to solve the maze in what's called the time trial, essentially how long it took them to remember and navigate to the position of an escape platform. And what you see? For the control and conventional DHA-treated mice, it took about 25 seconds with no differences between the two groups. But for the lysodHA-treated mice, they solved the maze in under 5 seconds. This is a tremendous improvement in cognitive performance. The point is this: lysodHA outperformed normal DHA in boosting brain DHA levels, brain-derived neurotrophic factor levels, and cognitive performance. And let me also emphasize that these are reproducible findings. For example, in another study, researchers fed animals equal amounts of DHA in different forms, including the triglyceride form, like in the JAMA paper, or lysodHA. And clearly lysodHA dramatically increased brain DHA levels, whereas the more common form, the triglyceride form, found in typical omega-3 supplements, preferentially got shunted to fat tissue. The difference could not be more striking. And again, lysodHA improved memory and boosted BDNF levels in the brain more than its other DHA counterparts. So to put it simply, if you care about delivering DHA to your brain, lysodHA is the form you want. It's the express courier. Now, an obvious limitation on these data are that they conducted in animals. Given technical limitations that I already mentioned, this is necessary. There aren't many volunteers for studies where you have to harvest human brains. However, I wouldn't dismiss the findings for that reason alone. It's well established that DHA is critical in the human brain, at least as much if not more than in the mouse brain. And in fact, there are rare individuals with genetic defects in this MSFD2A transporter that transports lysodHA into the brain. And what do they exhibit? Reduced brain size, intellectual disability, spasticity, and even absent speech, underscoring the vital importance of this specific form of omega-3 and omega-3 transporter in human neurobiology. So, briefly, do I think these findings translate into human relevance? Yeah. In fact, I'm betting on it. That brings us to Chapter 3, though: the action plan. There are several dietary options and supplements you can take to help increase your intake of lysodHA or other phospholipid forms of DHA. First and foremost, it's worth emphasizing that there remains a strong signal between overall fish and seafood intake and cognitive health and brain longevity. This may be due in part to the small fraction of omega-3 in whole seafood that exists in the phospholipid form, but it may also be due to other neuroprotective factors that you don't want to overlook, like neuroprotective forms of selenium that are found in certain fish. For this reason, I think it's really wise to consume low-mercury fatty fish—think salmon, especially sockeye salmon, mackerel, sardine, anchovies, and herring—at least twice per week. That would be my suggestion. Now comes the awkward part of the video for me, because I want to tell you about a new premium product, but first let me offer a caveat. If you've followed me for a while, you know I'm extremely selective about supplements. I believe about 95% of optimal health comes from diet and lifestyle, but that remaining 5% can make a real difference, especially if, like me, you carry a genetic disadvantage. I have two copies of APOE4, the gene variant associated with up to a 15-fold increased risk of Alzheimer's disease and that compels me to go over and above to protect my brain. And that brings me to Accentrate Omega Max containing what's known as Lysovita. This is a premium product enriched in this lysodHA, the form of DHA designed to effectively reach the brain to support cognition and protect against neurodegeneration. That's not a medical claim, but they are science-backed predictions based on the research we've covered today. And it's also worth noting, ApoE4 carriers like me and 25% of the population and 65% of people who develop Alzheimer's disease break down DHA more quickly in the brain, meaning this lysodHA form is even more important.
Since recording this video, I actually did a whole separate letter on the metabolism in the brain and how it sets the stage for Alzheimer's disease. Definitely check that out. And a whole separate letter and a very popular letter on NAD metabolism and Alzheimer's disease. You can tell there's no end of rabbit holes you can go down. Links below.
So if you're looking to support long-term brain health, and especially if you're an APOE4 carrier like me, This is a product I do recommend. I use myself and I recommend my parents use it. I'm ApoE4/4 homozygote, so each of them are at least carriers. It is a premium product. It's expensive to produce, and the company behind it, Phoenix Health Science, is operating with a razor-thin margin to stay afloat, but in a sincere effort to keep it as accessible as possible, including a 20% discount code with the code STAYCURIOUS. You can see the link below. That said, if you're not interested in supplements, and that's totally fine, fish roe is naturally rich in phospholipid-bound DHA, although it's probably more expensive than a supplement anyway, and krill and krill oil are as well. Technically animal brains are too, but due to prion concerns, I can't in good conscience recommend it. But honestly, if you're eating fatty fish at least twice per week, you're already doing far better than most when it comes to brain nutrition. And that brings us finally to Chapter 4: Other Neuroprotective Strategies—simple high-yield actions you can take today to reduce your Alzheimer's risk tomorrow. First, I personally take a form of lithium called lithium orotate at 5mg daily. I use a brand called Pure Encapsulations, no affiliation there. Research suggests this specific form of lithium may be neuroprotective, targeting several core pathways involved in Alzheimer's disease. There's really strong preclinical evidence and even some compelling human data, and if you want the full breakdown, I have an entire video on that. Second, you cannot, you cannot miss out on the brain benefits of exercise, especially high-intensity exercise training. Because here's a fact that's often overlooked: your muscles are endocrine organs. They secrete hormones, some of which, like irisin, travel to the brain and boost BDNF, kind of like lesodha, and actively support brain health. So it's not an exaggeration to say skipping leg day isn't just bad for your body, it's bad for your brain. And third, I'd add creatine. It's not just for bodybuilders and gym bros. It's not just for your muscles. It's for your brain too. Creatine supports brain function. In fact, higher doses in the 15 to 20 gram range have been shown to have cognitive benefits and may offer neuroprotection. Overall, when you weigh the risks and benefits, creatine is one of the clearest winners for benefits. It's also one of the most studied supplements in history, if not the most studied supplement. For more details and specific protocols, you can check out this dedicated video. And as always, you'll find more supporting links below. Please leave questions here or at the newsletter, and I'd love to keep the conversation going. Finally, I'd be remiss if I didn't say curiosity itself is neuroprotective. Truly. So keep watching, keep reading, keep engaging, and of course, stay curious. I'm gonna be honest, after that omega-3 throw, I'm still finding pills everywhere 3 days later.
