Menthol

Speaker 1...So, let's talk about menthol. It's a common topical pain reliever, working as a counter-irritant through TRPM8 channels, similar to capsaicin’s action. It definitely provides relief for many.

Speaker 2Absolutely, and that immediate relief can be crucial. But our focus here is on its long-term impact, especially in the context of aging and overall health. We know chronic, unrelieved pain itself can accelerate biological aging. For example, a study in *GeroScience* (2025) found painful diabetic neuropathy is linked to accelerated epigenetic aging and telomere shortening compared with painless neuropathy.

Speaker 1That’s a powerful point. So, a treatment like menthol, by alleviating pain, could indirectly benefit biological aging by reducing that chronic stress. However, we're talking about direct evidence. Does menthol itself, or its consistent long-term use, have a proven effect – positive or negative – on biological aging or all-cause mortality?

Speaker 2And that’s where the evidence becomes less clear-cut. While menthol is generally considered safe for appropriate, supervised use, especially topically, direct research linking its sustained application to epigenetic clock changes or all-cause mortality is largely unestablished. We don't have those large-scale, long-term human studies yet.

Speaker 1So, for now, while we can acknowledge the legitimate benefits of pain relief, and its potential to mitigate the aging effects of chronic pain, we can't definitively say menthol directly slows or accelerates biological aging, or impacts all-cause mortality in the long run. The evidence simply isn't there for that specific connection.

Speaker 2Precisely. It highlights the importance of weighing known benefits against what remains unknown, especially when considering long-term health outcomes.