LifestyleDr. Steven Gundry Shares His Celeb-Approved Wellness Hacks for Staying Healthy All Holiday SeasonGundry MDBy Carly Sloane Published: 8:38 AM PST, November 14, 2025Dr. Steven Gundry sat down with ET to reveal his celebrity-approved wellness hacks for the holiday season.Have a happy and healthy holiday! Dr. Steven Gundry, the expert behind transformations from stars like Kelly Clarkson and Usher, is sharing his top wellness tips with ET just in time for the 2026 holiday season.Before you hit a holiday party, Gundry says a little prep can go a long way.