What really causes vitiligo? Genes, autoimmunity, stress… yes. But research now suggests where you live could matter just as much. A major new study links environmental chemicals — especially phenols from industry and household products — to striking vitiligo “hotspots” across the U.S., including Massachusetts, the Rust Belt, and the Midwest. In this episode, we take on one of the toughest questions in vitiligo research: how much of this condition is shaped not just by your DNA, but by your environment. We’ll unpack what vitiligo is, what causes it, whether chemicals can trigger or worsen the disease, and how birthplace and early-life exposures may influence its severity over time. Is your ZIP code quietly shaping your skin health? Let’s find out. For the full deep dive, read The Vitiligo – Postal Code Connection Revealed