The 20-Year-Old Cholesterol Study Everyone Missed

Excuse me, but what? Why did nobody tell me about this? This pivotal study from 20 years ago shows you can lower your cholesterol, but without prescription drugs and without even changing your diet. It's something simple, something natural, and the mechanism blew my mind. It's something totally different from frontline cholesterol-lowering therapy, statins, and it changed fundamentally how I think about cholesterol LDL, ApoB manipulation, and it all comes down to a simple plant compound: berberine. In this video, I'm going to break down how statins really work and how berberine is the same but actually totally different. And if you stick around to the end, I promise I'll even reveal a little secret, a new tool that I have that I want to share with you in a brand new experiment I'm going to conduct on myself. It's a big one. So let's go. Statins can decrease GLP-1, cause insulin resistance, risk for type 2 diabetes. But berberine doesn't do that. Distinct. Totally distinct from statins. That's the paradox. That's the puzzle. Giving the cell more time to produce the LDL receptor protein. This hit me hard. LDL cholesterol dropped by 20%. There were basically no side effects. Improved markers of liver function. It excites me. Okay, 20 seconds of your time before we begin. First of all, always more details in the newsletter below. Second of all, In this video, we delve deep into mechanisms, and I get really enthusiastic about the science, but I want you to see this not as a prescription, not as a pivot, but a call for unity around excitement for understanding how our bodies work and being able to leverage that for better health. With that, let's get to the roadmap. So I've broken this into 6 chapters: how statins work, the berberine paradox, the berberine randomized control trial, berberine versus statins, my next big experiment, and why I wasn't told about this. Each chapter does build on the others, so I hope you have the endurance to stick around. But I did want to give you a roadmap. And yes, that endurance thing was a challenge, so let's see how many of you can stick around. But let's begin Chapter 1: How statins really work. Before we get to berberine, I really do want to start with this statins mechanism. This is the standard of care for cholesterol lowering, and I'm guessing your doctor has never explained to you the biochemistry— maybe they don't know— how these drugs fundamentally work. And understanding this will be critical in appreciating how berberine is totally different. So hang in there, or if you really don't want a biochemistry lesson, you can skip ahead to the next chapter, but that would make me sad, and I know you don't want to make me sad. So let's go. Statins, they inhibit this enzyme called HMG-CoA reductase. This is the key enzyme in cholesterol synthesis, the rate-limiting enzyme. And this inhibition, it happens in many cells in the body, muscles, brain, elsewhere, but especially in the liver, which is the major site of cholesterol production for the body. So by blocking this enzyme, HMG-CoA reductase, statins cause a cholesterol starvation inside the liver cells. They deplete the intracellular cholesterol pool. Now, the liver has a sensor in it that detects this drop in internal cholesterol. And when it senses this relative cholesterol depletion, it activates something called brace for jargon—sterol regulatory element binding proteins, or SREBPs, which are held outside the cell's nucleus like a dog on a leash. And once activated, these SREBPs move into the nucleus, bind DNA, and turn on genes, including the gene for the LDL receptor. So then the gene is turned into an mRNA transcript. This is the blueprint for making the LDL protein, which then goes to the surface of the cell and grabs LDL particles containing cholesterol from the bloodstream to pull them into the liver to compensate for that cholesterol starvation caused by the statin in the first place. So let's pause. I know I threw a lot at you, but this one sentence explains how statins actually work. Statins inhibit an enzyme leading to the depletion of the pool of cholesterol in the liver, forcing an adaptation to increase the LDL receptor that pulls cholesterol-containing particles molecules into the liver, which lowers your LDL cholesterol. Maybe that was more than one sentence, or if it was a sentence, it was totally a run-on. But if you understand that, you're going to understand how berberine is totally different. But first, to double-click on statins, this mechanism, it's effective at lowering LDL and ApoB, but it has downsides because by inhibiting this enzyme HMG-CoA reductase, statins also block the production of downstream products that are important for metabolism, like coenzyme Q, which is crucial for mitochondrial function. So this can lead to mitochondrial and muscle disruption. And statins can also increase markers of liver damage like AST and ALT. We'll get back to those because berberine, again, is totally different. Statins can decrease GLP-1, cause insulin resistance, risk for type 2 diabetes. All these are really well codified in the human literature, and I'll link to more details below. But I do want to get on to berberine, the star of today's show. So chapter 2, the berberine paradox. The researchers first conducted a screening of natural compounds with longstanding safety profiles, and berberine stood out. What is berberine though? Berberine is a natural compound derived from the plant genus Berberis, from which it gets its name, obviously. So quickly by way of beautiful illustration, this celandine— I think that's how you pronounce it— this celandine yellow poppy actually gets its yellow hue from berberine. That's the yellow color. Anyway, when the researchers tested in this study berberine, it had a strong activity for boosting levels of the LDL receptor mRNA, the transcript, the blueprint for making the LDL receptor, just like with statins. And yes, in humans and in animals, this translated to a substantial reduction in total and LDL cholesterol. But more on that in a moment, the human data, First, I want to go over how berberine works because it's very unusual and completely mind-blowing. Recall how statins work. They create this internal state of cholesterol starvation in the liver which triggers an adaptation: the release of these sterol regulatory element binding proteins, these SREBPs, that then go to the nucleus and turn on the genes that code for the LDL receptor. But berberine it doesn't do that. It doesn't deplete the liver's cholesterol pool, and it doesn't impact SREBP processing. In fact, the authors of the study make this point very clearly. To quote them: "The lack of any sterol regulatory effect through the SREBP pathway suggests that berberine increases LDL receptor expression by a mechanism distinct— totally distinct— from statins." So what the heck is berberine doing? Let's back up. To increase levels of the LDL receptor, the gene first needs to be switched on, which produces the mRNA transcript, that intermediate blueprint for making the LDL receptor protein. But surprisingly, berberine did not increase LDL receptor gene expression in the traditional sense. I won't bore you with the methodology, although you can find more details in the newsletters linked below. Anyway, Berberine did increase levels of the LDL transcript—that blueprint, that mRNA—and ultimately led to increased levels of LDL receptor protein. So how? How can you not increase expression of the LDL receptor gene, but you still get more LDL receptor transcript? That's the paradox. That's the puzzle. So pause the video here and see if you can solve the puzzle before I reveal the answer. Drop your hypotheses in the comments. Here's the twist, here's the answer. Berberine stabilized the transcript, it stabilized the blueprint. So quoting the authors, "Berberine prolonged the turnover rate of the LDL receptor transcript by approximately threefold, from 64 minutes to 198 minutes." So over 3 hours. Think about it like this if it hasn't landed yet. Normally, these instructions for making proteins, the LDL receptor, are shredded up by the cell after about an hour. But berberine lets the instructions stick around for over 3 hours, giving the cell more time to produce the LDL receptor protein. And this process is completely independent of intracellular cholesterol starvation, yet it still leads to more LDL receptors on the liver cells, and therefore more LDL being pulled from the bloodstream. Now this hit me hard. I spent years studying medicine and physiology, and I had no idea about this pathway. Now later in this video, I'll show you how exactly I'm testing this on myself and a tool I'm using to understand how this could reshape my own LDL cholesterol management. But first, let's look at how this actually did in real human patients, not me, a human randomized controlled trial. So Chapter 3: Berberine randomized controlled trial. The researchers then ran a randomized placebo-controlled randomized controlled trial—sorry, I'm saying that a lot—with 91 patients. Each patient received 500 mg of berberine twice per day, so 1 gram per day, for 3 months or a placebo control. And the results were striking. LDL cholesterol dropped by 20%, triglycerides dropped by 28%, and HDL cholesterol remained unchanged as compared to the placebo. And among patients not taking other lipid-lowering medications, so if you kind of stratify out people on statins and other drugs, the effects were even more pronounced. So LDL dropped by 25%, 31 mg/dL, that was the absolute drop. Triglycerides fell by 35%, almost 70 mg/dL for an absolute drop. And again, HDL cholesterol was not harmed. And even more interestingly, berberine improved markers of liver function, liver damage markers, ALT and AST and GGT. This might be due to a reduction in liver fat caused by the berberine, and is totally different than statins, which can increase the liver damage markers. So to summarize, berberine reduces LDL cholesterol, and presumably ApoB as well, and triglycerides. It does so through a totally novel mechanism by stabilizing the LDL receptor transcript, the mRNA, the instructions to make the protein, so you can make more protein. And it does this without depleting intracellular cholesterol pools and with minimal side effects. In fact, in this pioneering human trial, there were basically no side effects. Just one participant exhibited mild constipation, which was resolved when the dose was decreased from 500 mg BID—that means twice per day—to 250 mg BID. Pretty cool, right? And that brings us to Chapter 4. I want to give a concise comparison between berberine and statins—mechanisms, benefits, side effects. So, statins—starting with statin mechanisms. Statins inhibit HMG-CoA reductase, the key enzyme in making cholesterol. In the liver, this depletes cholesterol levels in the liver cells, leading to activation of the SREBP pathway to compensate. This increases the LDL receptor gene expression, ultimately leading to more LDL receptor protein and this lowers LDL. But side effects can be many, including muscle pain and muscle damage, mitochondrial disruption via depleting coenzyme Q and other mechanisms, decreasing GLP-1 hormone, increasing insulin resistance, increasing diabetes risk, and potentially increasing liver damage markers—the ALT, AST—among other side effects. That said, just to give credit where it's due, statins can also increase vasodilation via nitric oxide, and potentially can decrease inflammation if you have high baseline inflammation. And now on to berberine. Remember, mechanism— totally different. It stabilizes the LDL receptor mRNA transfer, the blueprint for making the protein, so then you make more LDL receptor protein and this ends up pulling LDL particles out of the bloodstream. The side effects are less— minimal overall, occasional mild constipation that's dose-dependent and can be resolved by just reducing the dose, and improves glycemic control, potentially lowers waist circumference, and improves liver damage markers, which is opposite to statins. And finally, just to make this point and broaden the discussion, these findings aren't a one-off. This was a landmark seminal paper, but since then, many randomized controlled trials have consistently demonstrated that berberine lowers LDL cholesterol and ApoB without reducing HDL cholesterol, and it also has neutral to beneficial effects on triglycerides, overall metabolic health, waist circumference, visceral adiposity, body mass index, and so on. In fact, I'd probably argue that berberine's cardiovascular benefits are driven largely by mechanisms beyond LDL cholesterol and ApoB reduction, but that's beyond the scope of this video. This video I really wanted to bring you this fascinating mechanism because it blew my mind, I was excited about it. And if you have further questions about berberine, I'll make more content on it, so drop your comments and questions in the video notes or at the newsletter. But now, as I promised, I wanted to share what I'm currently working on. That brings us to Chapter 5, my next big experiment. For those who are new here, I have unusually high cholesterol. My total cholesterol is over 700 and my LDL is in the 500s. But I don't have a genetic defect, I don't have familial hypercholesterolemia, but rather a phenotype known as the lean mass hyper-responder. Basically, when I restrict carbohydrates, my body compensates by increasing fat fuel trafficking via cholesterol-containing particles. It's kind of this energy trafficking system. If you want more details, you can read the paper I'm going to link below. Anyway, the clinical implications of my profile, this mechanism, are unclear. On the one hand, when I get cardiac scans, high-resolution coronary CT angiography, my heart is completely clean to date, which is reassuring. On the other hand, I still want to take responsible steps to ensure I'm managing my risk thoughtfully. And at present, I'm not taking any medications. I'm not taking statins or conventional lipid-lowering therapy for a variety of reasons, which I've reviewed previously. However, I'm actively exploring, I'm always exploring new options and self-experimenting with protocols to help me better understand what works in my body. So, I'm going to be launching an n=1 crossover experiment. In this study, I'm going to be comparing different interventions on myself, including bempedoic acid, a PCSK9 inhibitor, ezetimibe, and berberine. Now, I want to do this properly, which means this approach will include washout periods, and I'll be working with lipidology consultants, cardiology experts to ensure clinical rigor. The experiment could take a year or longer. But moving on, one of the reasons I'm moving forward with this now is because I've accepted a new role as a senior scientific advisor at Hundrd Health, an AI-based support tool for metabolic health. Unlike anything I've encountered. When I was talking with them, I wasn't prepared to be as impressed as I was. And yes, prepare for a plug now, although really it's just an honest disclosure about a very exciting tool that I'm helping to build. So this app, this Hundred Health app, it personalizes treatments and interventions based on your health goals and your background. It draws directly from over 400 electronic medical records includes over 100 biomarkers just in the baseline package, and then it uses state-of-the-art AI in an independent review of the literature— we're not talking about ChatGPT pulling hallucinations here, we're talking about something totally different— to produce a personalized metabolic health protocol that exceeds anything else on the market. This is really incredible. In fact, to give credit where it's due, It was my very own 100 Health Personalized Protocol that got me to this berberine nature medicine paper that we just talked about. And if you're interested, I'm going to drop way more information and the sign-up link below. I'm really all in on this one because this team is unbelievable, driven by altruistic purpose, so motivated. And frankly, the reason I joined is because I believe it's going to be a huge disruptive force for n=1 medicine and healthcare overall. And I wanted to be on the ground floor of that. So, that's my disclosure. And as I run this n=1 trial that I just described to you on myself, I'll be using Hundred Health not just to track my lipid markers, but to assess the much broader metabolic health outcomes in me across all the interventions. The platform gives me a level of granularity and integration I haven't seen anywhere before in my self-tracking. So if you have questions, drop them below. I'm committed to being transparent throughout this process, and I'll share my data and insights as they come to me. Let's see what we can learn together. But finally, wrapping up, Chapter 6: Why I wasn't told. Here we have a decades-old discovery published in a major journal when I was 9 years old, offering a radically different way to lower LDL and ApoB with fewer side effects and potentially other benefits. So I asked myself, why wasn't I told? Why didn't I learn about this in my training? And here's my answer: conventional medicine cares more about outcomes than mechanisms. And at face value, that's totally reasonable, right? Of course we care about patient outcomes first. But there's a catch. If we only focus on particular mechanisms, we lose the sense of the bigger picture. So if our sole focus is on LDL and ApoB reduction, we're going to gravitate to the interventions that move that number the most. Potentially missing broader implications. Mechanisms aren't just academic curiosities. Mechanisms give us insight into trade-offs, downstream effects, and areas where clinical data may not have arrived or may never arrive. So even after years of conventional training, I still lean heavily on mechanisms when navigating my personal health decision. And this mechanism on berberine it excites me. It makes biological sense, and frankly, it gives me more confidence than the mechanisms behind other standard treatments like statins, which we reviewed. So that's why I'm diving in headfirst into this, my n=1 journey, because I'm— well, you know what I am. It is what we are. I am curious. Thank you for joining me. I really appreciate you being part of the Stay Curious community. Stay curious. And I hope you learned something valuable.