Nerve block

Speaker 1...and this brings us to nerve blocks, a common intervention for chronic pain. The idea is simple: local anesthetic, sometimes with a steroid, injected near a nerve to temporarily stop pain signals.

Speaker 2Right. And for many, this offers crucial relief. But when we look at the bigger picture, particularly through the lens of aging and all-cause mortality, it gets complex. The direct link between nerve blocks, or their drug class, and biological aging isn't as clear-cut as some might hope.

Speaker 1Exactly. While untreated chronic pain is undoubtedly harmful – we see evidence that painful diabetic neuropathy, for instance, is associated with accelerated epigenetic aging and telomere shortening compared with painless neuropathy (GeroScience 2025) – the long-term impact of repeated nerve blocks on these very same biological markers is less established.

Speaker 2So, we know unrelieved pain accelerates aging. The question then becomes: does relieving that pain via nerve blocks reverse or mitigate that acceleration over the long term, or do the potential long-term risks – things like falls, sedation, or even subtle cardiovascular effects – introduce their own concerns?

Speaker 1It's a critical unknown. We don't have definitive, large-scale studies directly showing that repeated nerve blocks, over years, improve or worsen all-cause mortality or significantly alter the epigenetic clock in a beneficial way. The focus has largely been on immediate pain relief and function.

Speaker 2And that’s where the balance lies. For acute, severe pain, or carefully selected chronic conditions, nerve blocks can be life-changing, allowing for physical therapy and improved quality of life. But for broad, long-term use across aging populations, the evidence for a positive impact on biological aging or all-cause mortality simply isn't there yet.