#415 ‒ AMA #91: Understanding lab testing: what blood work can and cannot tell you about your health and disease risk

Hey, everyone. Welcome to a sneak peek ask me anything or AMA episode of the drive podcast. I'm your host, Peter Attia. At the end of this short episode, I'll explain how you can access the AMA episodes in full along with a ton of other membership benefits we've created. Or you can learn more now by going to peteratiamd.com forward slash subscribe. So without further delay, here's today's sneak peek of the Ask Me Anything episode. Welcome to Ask Me Anything AMA episode 91. Today, we're gonna talk about lab testing. Labs are often the first thing people reach for when they want an answer to probably the most important question imaginable, which is, am I healthy? They're objective, numerical, and come with reference ranges. So it's easy to treat them as a report card on your entire health status. But that instinct kind of oversells what labs can actually do. Their real utility is actually a lot more nuanced than that. So today, we're going to walk through where lab testing is genuinely helpful, where it's useful but incomplete, and where it tells us very little or frankly, nothing. And it gives you a framework for noticing the difference. So, we're going to cover why people turn to labs to answer the, Am I healthy? Question, and what that question really means in the context of longevity. How to use blood work for each of the major chronic disease states, cardiovascular disease, metabolic dysfunction, cancer, and neurodegeneration, and what labs are missing in each case. What labs can and can't reveal about the organ systems in our body, and why more tests doesn't necessarily mean more useful information. Why large direct to consumer panels and biological age scores can look sophisticated without necessarily changing a single clinical decision. How the picture changes when we shift from lifespan to health span, and why physical function, cognitive function, and emotional health mostly can't be captured in a blood draw. And we'll provide you with a practical set of questions to ask about any lab test, so you'll know what it's actually telling you and perhaps, more importantly, what it isn't. If you're a subscriber and you want to watch the full video of this podcast, you can find it on the show notes page. And if you're not a subscriber, you can watch the sneak peek of this video on our YouTube page. So without further delay, I hope you enjoy AMA number 91. Peter, welcome to another AMA. How are doing? Very well. Thanks. Awesome. So today's AMA, we're gonna focus on lab testing. And if you compile all the questions people send us, the vast majority of them will touch this topic at some level. Meaning someone says, hey, I just got blood work done, and the result of X was Y. What should I do? So I think it's not only a topic that is interesting that a lot of people care about, but it also seems …