The link to the Harvard page mostly shows us (unpublished, non-peer-reviewed) work focused on slowing, not reversing senescence. The big exception is...
Nick Delgadillo runs operations for The Aasgaard Company and is Head of Corporate Development for Starting Strength Gyms. He has been training instructors and coaches in fighting systems for over 10 years and has served on the Starting Strength Seminar Staff since 2013. His current focus is on developing Starting Strength Coaches, optimizing operations at The Aasgaard Company and Starting Strength Gyms, and competing in Brazilian Jiu Jitsu.