Psst... there’s an audio version of this story. Upgrade to listen
Michelle, 40, and Aliyah, 16, both wearing sunscreen; Myrtle Beach, South Carolina. Photo by Jacq Harriet

What If Avoiding the Sun Is Bad for You?

The pros and cons of sun exposure don’t start and end with vitamin D and skin cancer

ItIt was around 15 years ago that Dr. Matt Zirwas, an Ohio-based dermatologist, first noticed something curious about the people he was treating at his clinic.