Libsyn Directory

#308 - AMA #61: Sun exposure, sunscreen, and skin health: relationship between sun exposure and skin cancer, vitamin D production, and photoaging, how to choose a sunscreen, and more

The Peter Attia Drive

Release Date: 07/01/2024

#388 — Prostate cancer screening: why current PSA guidelines are failing men and how modern tools improve early detection and save lives

The Peter Attia Drive

In this episode, Peter takes a deep dive into prostate cancer screening, explaining why advanced and metastatic diagnoses continue to rise despite the availability of screening tools, and what can be done to reverse this trend. He breaks down what PSA actually measures and why it is far more informative when tracked over time rather than interpreted as a single value, and he explores how tools like MRI, PSA density, PSA velocity, and improved biopsy techniques can both reduce unnecessary procedures and improve the detection of aggressive cancers. Peter also discusses the role of active...

#387 - AMA #83: Peptides—evaluating the science, safety, and hype in a rapidly growing field

The Peter Attia Drive

In this “Ask Me Anything” (AMA) episode, Peter explores the topic of gray-market peptides, one of the most requested and most confusing topics he’s covered on The Drive. Peptides sit at the intersection of biological plausibility, clinical promise, and aggressive commercialization, and are often marketed as cutting-edge therapies for everything from muscle repair and longevity to cosmetic enhancement. Rather than promoting or dismissing peptides wholesale, Peter lays out a clear, repeatable framework for evaluating any peptide or drug—covering mechanism, intended effects, safety,...

#386 - Aging clocks—what they measure, how they work, and their clinical and real-world relevance

The Peter Attia Drive

In this episode, Peter takes a deep dive into the science and application of aging clocks, unpacking what they are, the differences between chronological age, biological age, and the pace of aging, and what epigenetic clocks may actually be measuring. He explores key research in the field, including a randomized controlled trial that tested simple lifestyle interventions against several commonly used aging clocks, as well as a study using brain MRI to assess the pace of aging and its relationship to dementia risk and mortality. Throughout the episode, Peter highlights the promises and...

#385 - AMA #82: Applying the tools of longevity in the real world: disease prevention, DEXA scans, artificial sweeteners, injury recovery, stability training, habit formation, protein intake and mTOR activation, and more

The Peter Attia Drive

In this “Ask Me Anything” (AMA) episode, Peter answers listener questions across a wide range of topics, focusing on practical decision-making and real-world application. He explores how health priorities and strategies should evolve across different decades of life, which chronic diseases are most challenging to manage and how to think about risk hierarchies, and which emerging interventions—beyond exercise—show the most promise for dementia prevention. Peter also breaks down the utility of wearables and explains how to use and interpret DEXA scans effectively. He discusses the...

#384 - Special episode — Obicetrapib: The CETP inhibitor with cardiovascular benefits and potential Alzheimer's prevention

The Peter Attia Drive

In this special episode, Peter takes a deep dive into obicetrapib, an investigational drug that has captured his attention and renewed interest in an entire class of therapies known as CETP inhibitors. He explains what obicetrapib is and how it works, revisits the history of CETP inhibitors and why earlier versions of these drugs failed—sometimes dramatically—and breaks down the key clinical trials designed to evaluate their impact on cardiovascular risk. Peter examines how obicetrapib influences major lipid biomarkers, including LDL cholesterol and lipoprotein(a) [Lp(a)], and discusses...

#380 ‒ The seed oil debate: are they uniquely harmful relative to other dietary fats? | Layne Norton, Ph.D.

The Peter Attia Drive

Layne Norton is a nutrition scientist and accomplished power athlete,who returns to The Drive for a conversation that departs from the show’s usual format. In this episode, Layne presents the evidence-based case that seed oils are not uniquely harmful under isocaloric conditions, while Peter steelmans the strongest versions of the opposing argument that seed oils are inherently harmful. They examine how scientific bias and evidence are evaluated, revisit the historical randomized controlled trials that shaped the seed oil controversy, and explore the mechanistic biology underlying LDL...

#379 - AMA #79: A guide to cardiorespiratory training at any fitness level to improve healthspan, lifespan, and long-term independence

The Peter Attia Drive

In this “Ask Me Anything” (AMA) episode, Peter brings together his most up-to-date thinking on cardiorespiratory fitness into a single, practical guide designed to help listeners structure training for maximal impact on healthspan, lifespan, and long-term independence. He explains why cardiorespiratory fitness is one of the strongest modifiable predictors of longevity, clarifies what zone 2 training actually represents and how it differs from higher-intensity work, and addresses persistent confusion around exercise volume, intensity, and time constraints. The discussion covers how to...

#378 ‒ Women’s health and performance: how training, nutrition, and hormones interact across life stages | Abbie Smith-Ryan, Ph.D.

The Peter Attia Drive

Abbie Smith-Ryan is a leading researcher in exercise physiology whose work focuses on how training and nutrition influence body composition, metabolism, cardiovascular health, and women’s health across the lifespan, with particular attention on perimenopause and post-menopause. In this episode, Abbie explains how early exercise and play help build the foundation for bone health, muscle development, and cardiorespiratory fitness in girls, as well as how puberty and menstruation shape athletic performance, motivation, and recovery. She also explores how women can tailor training and...

Building & Changing Habits | James Clear (#183 rebroadcast)

The Peter Attia Drive

James Clear is the author of the New York Times bestseller Atomic Habits. His extensive research into human behavior has helped him identify key components of habit formation and develop the “Four Laws of Behavioral Change.” In this episode, James provides insights into how both good and bad habits are formed, including the influence of genetics, environment, social circles, and more. He points to changes one can make to cultivate more perseverance and discipline and describes the profound impact habits can have when tying them into one’s self-identity. Finally, James breaks down his...

#377 ‒ Special episode: Understanding true happiness and the tools to cultivate a meaningful life—insights from past interviews with Arthur Brooks

The Peter Attia Drive

In this special episode of The Drive, Peter presents a curated “best of” conversation with bestselling author and previous guest Arthur Brooks, organized around four core themes: happiness itself, the forces that undermine it, the tools and practices that help cultivate it, and the courage required to live and love well. The episode brings together the most meaningful moments from two past interviews into a single, focused discussion that distills Brooks’ most insightful ideas and offers practical takeaways for building a life that's both successful and deeply happy. We discuss: ...

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In this “Ask Me Anything” (AMA) episode, Peter delves into two topics that have generated a lot of questions over the years: skin cancer and sunscreen. He begins by exploring the basics of UV radiation, discussing its effects on vitamin D conversion, photoaging, and its role in skin cancer. He examines various skin types, discussing their implications for sun exposure and vitamin D levels, as well as how to determine where you fall on the skin type scale. He then delves into the various types of skin cancer, with a particular emphasis on melanoma, exploring its complex relationship with UV exposure and other contributing risk factors. Additionally, he covers tanning beds, the importance of early skin cancer detection through regular skin checks, and the often confusing topic of sunscreen. He explains how sunscreen affects UV radiation and skin cancer risk, what SPF levels to choose, the differences between organic and mineral sunscreens, and what to consider when selecting the best sunscreen for your needs.

If you’re not a subscriber and are listening on a podcast player, you’ll only be able to hear a preview of the AMA. If you’re a subscriber, you can now listen to this full episode on your private RSS feed or our website at the AMA #61 show notes page. If you are not a subscriber, you can learn more about the subscriber benefits here.

We discuss:

The impact of UV radiation on the skin [2:00];
Understanding solar UV: from the electromagnetic spectrum to skin health [3:45];
The role of sunlight in vitamin D production [8:30];
Factors contributing to vitamin D deficiency: insufficient UV exposure, magnesium levels, and more [9:45];
Sun exposure needs for different skin types, and the limitations of current studies in defining vitamin D deficiency [12:45];
The acute and long-term effects of excessive UV exposure: sunburn, photoaging, and the increased risk of skin cancer [15:30];
Types of skin cancer and associations with UV exposure [17:45];
The complex relationship between melanoma and UV exposure [22:15];
Why UV exposure alone doesn’t necessarily explain the risk for melanoma [25:15];
Other risk factors for melanoma [29:15];
Tanning beds and skin cancer risk [34:45];
Balancing sun exposure: benefits and risks [38:15];
Tattoos and sun exposure [40:30];
The importance of regular skin checks, dermatologists, and emerging technologies showing promise for early detection of cancer [41:45];
Self-skin checks: what to look for [46:30];
Prevalence of skin cancer and the importance of early detection [49:30];
Summary of the major risk factors for melanoma [54:15];
The role of sunscreen in reducing skin cancer risk [55:45];
How sunscreen works, the differences between chemical and mineral sunscreens, an explanation of SPF, and more [58:30];
How to determine the appropriate sunscreen SPF to use based on the UV index [1:04:45];
Choosing the right sunscreen for your individual needs [1:07:00];
The impact of water and perspiration on sunscreen effectiveness [1:12:00];
Chemical vs. mineral sunscreens: safety concerns and recommendations [1:14:00];
Concerns about hormone effects from chemical sunscreens [1:19:15];
Sunscreen summary: skin types, key considerations, recommended brands, and more [1:23:15]; and
More.

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