Librarian Note: There is more than one author by this name in the Goodreads database. Jay Campbell is the Amazon Best Selling author of four change making books in the optimization health care space. The 2019 release and master treatise on Fat Loss, Guaranteed Shredded, The 2018 release and #1 overall Men's Health book, The Testosterone Optimization Therapy Bible: The Ultimate Guide to Living a Fully Optimized Life. The 2017 IF masterpiece, The Metabolic Blowtorch Diet-The Ultimate Guide for Optimizing Intermittent Fasting: Burn Fat, Preserve Muscle, Enhance Focus and Transform Your Health. The 2015 released and #1 5 Star Rated book of all time on TRT/TOT, THE Definitive Testosterone Replacement Therapy MANual: How To Optimize Your Testosterone For Lifelong Health and Happiness.