Full show notes: https://bengreenfieldlife.com/sunpodcast In this episode, journalist Rowan Jacobsen, author of In Defense of Sunlight, challenges everything you thought you knew about sun exposure. Modeled after Michael Pollan's In Defense of Food, his book argues we've been gaslit into a "zero-sun policy" the science does not actually support. You'll hear why melanoma is tied to intermittent sunburns rather than steady sun, the surprising 2024 research suggesting UVB may be protective while UVA is the real concern, and how office culture, window glass, and car windows may all be hidden pieces of the skin cancer puzzle. You'll also learn why the vitamin D supplement story is more complicated than the pills suggest, how sunlight lowers blood pressure through nitric oxide and lifts your mood through natural opioids, where sunscreen genuinely helps and where hats and shirts do better, what to make of the new sunscreen ingredient Bemotrizinol, and how a simple 30-day reset of your light exposure could transform your sleep. Chapters: 0:00 Introduction 03:13 The case for sunlight in seven words 06:33 From heliotherapy to the zero-sun policy 07:56 Melanoma rose as we moved indoors 11:06 Sunburns, not steady sun, track melanoma 14:08 The 2024 study: UVA vs UVB 16:33 Glass, cars, and hidden UVA 19:06 The real vitamin D story 23:56 How sunlight lowers blood pressure 26:05 Why sunlight triggers natural opioids 28:43 Where Rowan lands on sunscreen 33:54 Coral reefs, cleaner sunscreens, and Bemotrizinol 37:31 The lifeguard skin-microbiome study 40:41 Sun by skin tone, latitude, and season 45:09 A month with no artificial light Shop My Curated Marketplace of Vetted Products! - https://shoplifemarket.com Sign up for a FREE Coaching Call! - https://jointriumphcoaching.com Check out my FREE newsletter! - https://bengreenfieldlife.com/newsletter/ 🔗My Website: https://bengreenfieldlife.com/ 🔗My Podcast: https://bengreenfieldlife.com/podcast/ 🔗My Books: https://shopbengreenfieldlife.com/collections/books Connect with me: ⬇️ Instagram https://www.instagram.com/bengreenfieldfitness/ Facebook https://www.facebook.com/BGFitness X https://twitter.com/bengreenfield TikTok https://www.tiktok.com/@bengreenfield