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Skeptic Check: Sunny Daze

October 5, 2026 · 54 min

Show notes

A growing online movement of sunscreen skeptics believes that sunblock is toxic, even suggesting that it might cause skin cancer. Medical experts, concerned by rising skin cancer rates, are rushing to push back against these claims. Meanwhile, new research suggests that too little sunlight could be detrimental to health and links it to some cardiovascular disease and cancer. How do we navigate through the darkness of these seemingly conflicting messages about sunlight? We enter the slippery world of skin care to break down the science of sunlight and sunscreen and uncover some surprising effects that UV rays have on our bodies.  

Guests: 

Brian Underwood – journalist and Beauty and Grooming Director of Men’s Health and Women’s Health, and author of the article, The Anti-Sunscreen Movement is Coming for You  

Rowan Jacobsen – science writer and the author of “In Defense of Sunlight”  

Dr. Michelle Henry – cosmetic dermatologist and dermatologic surgeon, Clinical Instructor of Dermatology at Weill Cornell Medical College 

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