#343 – The evolving role of radiation: advancements in cancer treatment, emerging low-dose treatments for arthritis, tendonitis, and injuries, and addressing misconceptions | Sanjay Mehta, M.D.
Release Date: 04/07/2025
#399 ‒ The evolution of Alzheimer's disease and dementia care: how early detection, personalized treatment, new therapies, and a multimodal approach are changing the landscape | Gayatri Devi, M.D.
The Peter Attia Drive
Gayatri Devi is a nationally recognized neurologist specializing in memory disorders, including Alzheimer’s disease and related dementias. In this episode, Gayatri explains how to think about dementia as a spectrum—including Alzheimer’s disease, vascular dementia, Lewy body dementia, and mixed presentations—while exploring the evolving biology of amyloid, tau, and neuroinflammation and why brain pathology does not always correlate with symptoms. She discusses her approach to detecting subtle cognitive decline in high-functioning individuals, the role of biomarkers and APOE4 testing...
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Building strength and muscle mass: how to optimize training, nutrition, and more for longevity (AMA #71 rebroadcast)
The Peter Attia Drive
In this “Ask Me Anything” (AMA) episode, Peter dives deep into the topic of muscle mass and strength, examining their essential roles in both lifespan and healthspan. Drawing from over 30 hours of prior discussions with experts including Layne Norton, Andy Galpin, and Mike Israetel, this episode distills the most important insights into one comprehensive and up-to-date conversation. Peter explores why muscle matters for longevity, metabolic health, and injury prevention, and clarifies the differences between muscle mass and strength, including which is more vital for aging well. He...
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#398 ‒ AMA #86: GLP-1 RAs and muscle loss: new data, better questions, and how to preserve muscle during weight loss
The Peter Attia Drive
In this “Ask Me Anything” (AMA) episode, Peter explores the effects of GLP-1 receptor agonists—including drugs such as Ozempic, Wegovy, and Zepbound—with a particular focus on their impact on muscle. He examines how much lean mass people actually lose during treatment and how those changes compare to weight loss achieved through other methods, while explaining why measurements of lean mass on DEXA scans can sometimes be misleading. Peter discusses the effects of these medications on bone mass, fracture risk, strength, and physical function, highlighting why functional outcomes may...
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#397 ‒ Endometriosis and adenomyosis: diagnosis, fertility, reproductive aging, and emerging treatments | Renato Tomioka, M.D., Ph.D.
The Peter Attia Drive
Renato Tomioka is a leading expert in reproductive medicine and gynecologic surgery whose unique skills allow him to diagnose and treat some of the most impactful yet frequently overlooked conditions affecting women’s health. In this episode, Renato explores endometriosis and adenomyosis, explaining what these conditions are, why they often go undiagnosed for years despite affecting millions of women worldwide, and how advances in MRI and specialized ultrasound are transforming diagnosis beyond traditional surgical laparoscopy. He discusses the decision-making process behind hormonal...
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#396 ‒ Breast cancer screening: understanding risk, deciding when to start and how often to screen, and choosing the right imaging strategy
The Peter Attia Drive
In this episode, Peter explores the critical topic of breast cancer screening, examining why thousands of women continue to die from breast cancer each year despite the availability of effective screening tools. He explains the strengths and limitations of current screening strategies, reviews the recommendations from major medical organizations, and discusses why screening guidance can often seem confusing or contradictory. Peter outlines a practical framework for understanding breast cancer risk and personalizing screening decisions, including when to begin screening, how frequently to...
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#395 - Brain lipidology: understanding APOE, cholesterol homeostasis, Alzheimer's disease risk, and the effects of lipid-lowering therapies on brain health | Tom Dayspring, M.D.
The Peter Attia Drive
Tom Dayspring is a world-renowned lipidologist and one of the most thoughtful teachers in the field of lipid metabolism. In this episode, Tom returns to The Drive for a deep dive into the relationship between lipids and brain health, beginning with the fundamentals of cholesterol transport before exploring why the brain’s cholesterol system operates almost entirely independently from the rest of the body. Tom examines the roles of apoB, apoA-I, and especially apoE in cholesterol homeostasis, discusses how APOE genotype influences Alzheimer’s disease risk, and unpacks the complex links...
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#394 ‒ Sleep pharmacology: the role of medications in healthy sleep, the promise of emerging therapies, and the evidence for common sleep supplements
The Peter Attia Drive
In this episode, Peter dives into the pharmacology of sleep, exploring where sleep medications fit within the broader framework of achieving healthy, restorative sleep. He explains why sleep is a biological imperative, why behavioral and environmental interventions must remain the foundation of good sleep, and how medications can serve as useful tools when carefully matched to a person’s specific sleep problem. Peter examines the major classes of prescription sleep medications, including how they work, their effects on sleep architecture, their duration of action, side effects, and risks...
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#393 ‒ AMA #85: A guide to medications and supplements: determining what to take, what to skip, and how to know if they’re working for you
The Peter Attia Drive
In this “Ask Me Anything” (AMA) episode, Peter explores how to think critically about medications and supplements by focusing not on whether an intervention is inherently “good” or “bad,” but on whether it makes sense for a specific person with a specific problem. He explains why clearly defining the problem matters more than choosing the intervention itself, how the intended purpose of a medication or supplement should influence the standard of evidence required, and why mechanistic reasoning alone is rarely enough to justify taking something. Peter also examines how baseline...
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#392 - Genetic testing: when it's valuable, how to choose the right test, and what to do with the results
The Peter Attia Drive
In this episode, Peter explores the complex and often misunderstood world of genetic testing, building a practical framework for understanding what these tests can and cannot actually tell us about health and disease. He explains why some genetic findings can be genuinely life-changing while many others offer information that is far more probabilistic than deterministic, and why directly measuring the phenotype is often more valuable than inferring risk from DNA alone. Peter examines where genetics can provide meaningful insight across the major disease categories and where its predictive...
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#391 ‒ Colorectal cancer screening: importance of early screening, colonoscopy as a screening and preventive tool, and how to build a personalized strategy
The Peter Attia Drive
In this episode, Peter takes a deep dive into colorectal cancer (CRC) screening, explaining why it is one of the most preventable cancers and why getting screening right can have life-saving implications. He walks through how colorectal cancer develops and why it is uniquely well-suited to early detection and prevention, with a particular emphasis on the dual role of colonoscopy as both a diagnostic and therapeutic tool. Peter also examines the concerning rise in early-onset CRC among younger adults, highlighting why awareness and timely screening matter more than ever. The episode provides...
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Sanjay Mehta is a radiation oncologist with over 25 years of experience, and is currently the president of Century Cancer Centers in Houston, Texas (drsanjaymehta.com). In this episode, Sanjay explores the rapidly evolving field of radiation oncology, addressing common misconceptions about radiation exposure. He delves into radiation’s critical role in modern oncology, examining recent advancements that precisely target tumors while minimizing damage to surrounding healthy tissues and reducing side effects, with specific insights into breast, prostate, and brain cancers. Sanjay discusses fascinating international practices involving low-dose radiation therapy for inflammatory conditions such as arthritis, tendonitis, and sports injuries, highlighting its effectiveness and potential for wider adoption in the United States. Wrapping up on a lighter note, Peter and Sanjay discuss their mutual passion for cars and reveal how this shared interest first brought them together.
We discuss:
- How radiation oncology became a distinct, rapidly evolving medical specialty [2:45];
- Defining radiation, ionizing vs. non-ionizing, and common misconceptions about radiation exposure [5:30];
- How radiation doses are measured, real-world examples of radiation exposure, and safety practices [9:00];
- Radiation doses from common medical imaging tests, and why benefits of routine imaging outweigh risks [14:15];
- Therapeutic radiation oncology: the evolution of breast cancer treatment toward less invasive surgery combined with targeted radiation [23:30];
- Modern radiation oncology treatments for breast cancer—minimizing risks and maximizing patient comfort and outcomes [27:15];
- How advances in radiation dosing, technology, and treatment precision have significantly reduced side effects [39:45];
- How breast implants affect radiation treatment [44:45];
- Radiation therapy for prostate cancer: advancements in precision, effectiveness, and patient selection criteria [48:00];
- Radiation therapy options for inoperable prostate cancer or those seeking alternatives to surgery, and a remarkable patient case study [55:15];
- How patients can effectively evaluate and select a high-quality radiation oncologist [1:05:45];
- Radiation therapy for brain cancer: the shift toward precise, targeted techniques that minimize cognitive side effects, and remaining challenges [1:08:30];
- The origins of radiophobia and how it influenced perceptions of radiation use in medicine [1:18:00];
- Treating chronic inflammatory conditions such as tendinitis, arthritis, and more with very low-dose radiation [1:23:45];
- Using low-dose radiation to treat spine injuries, scar tissue, fibrosis, keloids, and more [1:30:00];
- The current barriers preventing widespread adoption of low-dose radiation therapy for inflammatory conditions [1:35:45];
- The durability and versatility of low-dose radiation therapy in treating chronic inflammatory and arthritic conditions [1:40:45];
- Sanjay’s talent as a drummer [1:44:45];
- Peter and Sanjay’s shared passion for cars and racing [1:47:15]; and
- More.
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