Feel Better, Live More with Dr Rangan Chatterjee · 2025-10-14 · 121 min · 20,761 words

The Science of Sunlight: How 20 Minutes a Day Could Transform Your Mood, Energy, Sleep & Longevity with Dr Roger Seheult #586

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If I were to say what is the single biggest intervention that someone can do right away that would show not only benefits in the short run, but also in the long run and is the lowest hanging fruit, there's no question in my mind that sunlight is that intervention. Hey guys, how are you doing? Hope you're having a good week so far. My name is Dr. Rongan Chatterjee, and this is my podcast, Feel Better, Live More.

When you think about improving your health, do you think about how much time you're spending outside? You see, I think many of us have come to the conclusion that spending time outside in the sun is only about our vitamin D levels, but honestly, it is so much more than just that. Our exposure to natural light plays a vital role in how we sleep, how we feel, and even how our cells create energy. This week's returning guest is Dr. Roger Schwelt.

Roger is a quadruple board certified physician in internal medicine, pulmonary diseases, critical care and sleep medicine. He's a professor at the University of California. and at Loma Linda University, and is also the founder of Medcram, a medical education platform, with over 1 million YouTube subscribers, widely used by hospitals and medical schools around the world. And I think for me, one of the things I love the most about Roger is that he is someone who, like myself, has a deep passion for making complex medical science accessible and easy to understand. In our conversation, we discuss the eight laws of health and how neglecting them leads to the chronic conditions that Roger ends up seeing in his patients, why a deficiency in sunlight and time outdoors can show up as fatigue, poor sleep, inflammation, and even elevated cholesterol levels, the three macronutrients of natural light, visible,

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