Starcast Join the waitlist
Mark Reardon Show

Mark Reardon Show

Author Rowan Jacobsen Explains the Surprising Science and Health Benefits of Sun Exposure

Sep 14, 2026 · 10m

Coming soon to iPhone. Already have it? “Listen in Starcast” takes you straight there.

About this episode

Mark is joined by Rowan Jacobsen, science journalist and author of In Defense of Sunlight: The Surprising Science of Sun Exposure, to discuss how moderate sunlight exposure benefits overall human health beyond just vitamin D production. Rowan shares research on how sun exposure can lower the risk of cardiovascular disease, cognitive decline, and various non-skin cancers, while addressing the nuances of balancing skin cancer risks with sunlight's positive effects on longevity and well-being.