Worthy’s New York Times best-selling “Keto Zone Diet” by Dr. Don Colbert tops 100,000 copies sold (NASHVILLE, Tenn.) May 2018 – Worthy Publishing is pleased to announce Dr. Don Colbert’s newest book, Dr. Colbert’s Keto Zone Diet: Burn Fat, Balance Appetite Hormones, and Lose Weight (Sept. 2017; 9781683970248), has sold over 144,000 copies in the first eight months of release. Through his research and walk with God, Dr. Colbert reveals unique insights in his Keto Zone Diet that has helped thousands improve their lives and health. He will continue…