
FGF21 – A Single Injection Extended Mouse Life by a Fifth. Here Is What Actually Happened.
Abstract In June 2026, a group at the Center for Animal Biotechnology and Gene Therapy in Barcelona published the result that longevity research has been waiting for and rarely gets: a single intervention, given to animals that were already old, that extended not just how long they lived but how well. The study came from Professor Fatima Bosch’s group at the Universitat Autonoma de Barcelona, in Molecular Therapy. It is

