Karl Jacob's book on insulin hits #1 in Amazon's Diabetes category, launches $0.99 promo

Karl Jacob's debut book, "Fix Your Insulin: 7 Simple Hacks to Lose Weight Without Hunger or Calorie Counting," quickly reached #1 in Amazon's Diabetes category after its April 28 release. The book challenges traditional calorie-focused weight loss advice by emphasizing insulin control, backed by 64 peer-reviewed studies and Jacob's personal success in losing over 80 pounds. To celebrate, a limited-time Kindle Countdown Deal offers the book for $0.99 until May 12, 2026, aiming to reach more readers with its practical approach to managing insulin and weight loss. The book is available in Kindle and paperback formats and included in Kindle Unlimited.