The type and cause of DNA breaks may differ in their impact on aging and repairability.

“and we don't know if all DNA breaks are equal right break that we caused in our mice to accelerate their aging were very precise breaks they create what are called sticky DNA and so there were four letters that could come back just like a zipper pretty quickly and so therefore they didn't create create mutations but if you get hit with an x-ray or a cosmic ray that's that's a typically a profound break that's very hard or harder at least to put back together and it may be very different if you have different types of breaks”