Gene therapy and follistatin are promising for longevity but are not yet well-proven.

“But we also did a separate experiment where we took three transcription factors, OS and K, of OSKM, separate experiments, but delivered in similar ways, adeno-associated virus. Then we did some other experiments with follistatin and telomerase, so it affects the ends of the chromosomes, the telomeres. Follistatin is mostly muscle.”