There's a limit on the number of times a cell can divide(the telomere length), so it seems like a "vaccine" against them would decrease lifespan by reducing the

There's a limit on the number of times a cell can divide(the telomere length), so it seems like a "vaccine" against them would decrease lifespan by reducing the limit by 1. But it sounds like cells reaching that limit, cause other effects(inflammation, etc.) that are perhaps even worse for lifespan. So this wouldn't be an anti-aging vaccine, but would reduce symptoms of aging.