Your mitochondria are having a midlife crisis, and it turns out that’s exactly what they need.
New research from Aging Cell reveals that two existing drugs—terbinafine (the antifungal you use for athlete’s foot) and miglustat (a treatment for rare genetic storage diseases)—can extend both lifespan and healthspan by deliberately stressing your cellular powerhouses.
The mechanism is counterintuitive but elegant. Both drugs trigger what researchers call “mitochondrial hormesis”—a controlled stress response that makes your mitochondria stronger. Think of it like exercise for your cells: a little bit of strategic damage that forces adaptation and improvement.
Terbinafine works by inhibiting an enzyme in fungal cell membranes, but its secondary effect on human mitochondria creates beneficial stress signals. Miglustat, originally designed to reduce harmful lipid accumulation in genetic diseases, appears to have similar mitochondrial effects.
The study tracked multiple aging biomarkers and found improvements in cellular energy production, oxidative stress resistance, and overall metabolic health. Both drugs activated longevity pathways that typically decline with age—essentially tricking cells into thinking they’re younger and need to mount a defense.
What makes this particularly interesting is that we already know these drugs’ safety profiles. Terbinafine has been used for decades with minimal side effects in healthy people. Miglustat is newer and more specialized, but its mechanisms are well understood.
The researchers tested various dosing protocols and found that intermittent, lower doses were more effective than continuous high doses—suggesting that the stress response, not drug accumulation, drives the benefits.
The Protocol says: Promising mechanism with known safety profiles, but human longevity data is still missing. Terbinafine might be worth discussing with your doctor if you’re already dealing with fungal issues, but don’t start popping antifungals for anti-aging just yet.
This is exactly the kind of drug repurposing that could fast-track longevity interventions—if the human data follows the cellular promise.
Research published in Aging Cell examining mitochondrial stress responses as aging modulators.