New intranasal and injectable gene therapy for healthy life extension

more details below about how they extended mouse lifespan: Exogenous telomerase reverse transcriptase or follistatin genes increased telomere length and muscle mass, respectively.

So is longevity all about hyperfunction inhibition, or do things like this matter for humans?

Note that 3 of the authors are from BioViva, and Bioviva gave grant money for this research.