How Statins Can Damage Your Mitochondria

Patients on a statin often tell me they feel worn down, with achy or cramping muscles and a mental fog they can't shake. The usual reassurance is that statins are well tolerated, and for many people they are, but there's a real mechanism behind those complaints, and it runs straight through the mitochondria.

The pathway statins block

Statins lower cholesterol by blocking an enzyme called HMG-CoA reductase, the rate-limiting step of the mevalonate pathway. That pathway does more than make cholesterol, though, because the same early steps also build coenzyme Q10 (ubiquinone), a fat-soluble carrier that shuttles electrons through the electron transport chain, the assembly line inside your mitochondria that produces ATP. When a statin throttles the mevalonate pathway, CoQ10 production falls along with cholesterol, and that's where the trouble starts.

Less CoQ10, less ATP

CoQ10 sits at the heart of energy production, so when muscle runs short of it, the electron transport chain slows and the cell makes less ATP, the molecule that powers everything from a heartbeat to a single step. Researchers have measured this directly. In a 2025 systematic review and meta-analysis, Kovacic and colleagues described how statins block the mevalonate pathway, deplete CoQ10, and impair mitochondrial energy production in muscle [1]. Marcoff and Thompson reached a similar conclusion years earlier, tracing statin-associated muscle complaints to CoQ10 depletion [2]. The effect shows up in performance too, since Mikus and colleagues found that simvastatin blunted the gains in fitness and muscle mitochondrial content that exercise normally produces [3].

Why the muscles cramp and the mind fogs

This mechanism explains what people actually feel. Statin-associated muscle symptoms, which range from mild aches to cramping and weakness, affect somewhere between 5 and 20 percent of statin users, and starved mitochondria are a leading explanation, since a muscle low on ATP fatigues and cramps more easily. The brain is even more energy-hungry than muscle, so it's plausible that the same CoQ10 and ATP shortfall underlies the brain fog many people report, though that link is less firmly established than the muscle one.

Can supplements fix it

The obvious move is to replace what the statin depletes, and people have tried. Supplementing CoQ10 makes mechanistic sense, and the evidence is mixed rather than empty. Kovacic and colleagues found that CoQ10 produced a small, statistically significant reduction in muscle pain across seven trials, though the studies were small and varied enough that they called the result inconclusive [1]. Creatine, which feeds the cell's other rapid energy system, has also been proposed, and Balestrino and Adriano laid out the rationale, though the human results so far are modest [4]. Neither supplement is a guaranteed fix, which fits the picture of a problem rooted deep in how the cell makes energy.

What this means

This means statin side effects aren't imaginary or purely psychological, since they have a real biochemical basis in the mitochondria. Statins also genuinely lower the risk of heart attacks and strokes in people who need them, and most people tolerate them well, so the point isn't to fear or abandon the drug. If you're on a statin and feel wiped out, achy, or foggy, talk to your physician rather than stopping on your own. There's a lot to adjust within treatment, like lowering the dose, switching to a different statin, trying intermittent dosing, or adding CoQ10, and the right move depends on why you're on the statin in the first place. The goal is to protect your heart without quietly draining the engines that power the rest of you.

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References

1. Kovacic S, Habicht SD, Eckert GP. Effects of coenzyme Q10 supplementation on myopathy in statin-treated patients: a systematic review and meta-analysis. J Nutr Sci. 2025. PMID: 41158831
2. Marcoff L, Thompson PD. The role of coenzyme Q10 in statin-associated myopathy: a systematic review. J Am Coll Cardiol. 2007. PMID: 17560286
3. Mikus CR, Boyle LJ, Borengasser SJ, et al. Simvastatin impairs exercise training adaptations. J Am Coll Cardiol. 2013. PMID: 23583255
4. Balestrino M, Adriano E. Creatine as a candidate to prevent statin myopathy. Biomolecules. 2019. PMID: 31533334