Probably not the current crop, but perhaps those who will be seniors in forty to fifty years time.

Basically, as your cells senesce (get older), they lose functionality they had when they were younger. You get less robust error correction, slower healing, divison stoppage as telomeres run out, etc. This type of research is tackling one of those issues, the DNA degradation, that, if resolved, would allow older cells to function like younger cells.

Its not a potion of restore lost youth type thing, unfortunately. The field is too young for that yet.