Vaccination (Shingrix / latent viral burden)

Estimated longevity benefit: +1.5 years. Evidence score: 100/100.

Shingrix (recombinant zoster vaccine) protects against herpes zoster reactivation and, in a 3,884-person cohort study, was associated with significantly slower biological aging across five independent measures — epigenetic age, pace of aging (DunedinPACE), transcriptomic age, proteomic age, and a composite biological age score — with effects persisting more than four years. The mechanism links latent herpesvirus suppression to reduced chronic inflammaging.