Statin Side Effects in Men: Muscle Aches, Sexual Health and the Evidence

Short answer: The most common complaint men have on a statin is muscle aches, and statins can also nudge blood sugar up slightly. Many other side effects printed on the leaflet, including erectile dysfunction, memory problems, tiredness and poor sleep, were not more common on a statin than on a placebo pill when large blinded trials were pooled. Real muscle injury is rare but needs a doctor quickly. Never stop or change a statin on your own; talk to the doctor who prescribed it.

Key Takeaways

• What statins do: they block an enzyme the liver uses to make cholesterol, which lowers LDL (the “bad” cholesterol) and cuts heart attack and stroke risk.^[3]
• Muscle aches are real but mostly not caused by the pill: in 19 blinded trials, 27.1% of people on a statin and 26.6% on placebo reported muscle pain or weakness.^[4]
• Sexual side effects are listed but not confirmed: the NHS lists erectile dysfunction and low libido as uncommon, yet a 2026 analysis of 23 blinded trials found no significant excess on statins.^[1][5]
• Blood sugar can rise a little: US labels note higher blood sugar and HbA1c and a small increase in new diabetes diagnoses.^[2]
• Red flag: unexplained muscle pain, tenderness or weakness should be reported so your doctor can check a blood test called CK.^[1]
• Do not quit quietly: a dose change, a different statin or a different schedule can often solve the problem. Decide with your doctor.

What Statins Do and Why Men Are Prescribed Them

Statins such as atorvastatin, rosuvastatin, simvastatin and pravastatin block an enzyme called HMG-CoA reductase. With less cholesterol being made inside the liver, the liver pulls more LDL out of the blood.^[3] StatPearls groups statins by strength: high intensity regimens lower LDL by more than 50%, moderate intensity by 30% to 49%, and low intensity by less than 30%.^[3]

Doctors usually decide on a statin by looking at your overall 10 year risk of heart disease and stroke, not one cholesterol number. Age, blood pressure, smoking, diabetes and family history all count. If you want to understand your own results first, our guides to cholesterol numbers for men and the ApoB test explain what each value means.

That context matters for side effects. Most men start a statin in their 40s, 50s or 60s, the same years when joint pain, poorer sleep, weight gain, rising blood sugar and changes in erections become more common for many other reasons. When a new pill arrives in the middle of all that, it is easy to blame it for everything.

What the Leaflet Lists vs What Blinded Trials Found

The NHS groups statin side effects by how often they are reported. Common ones include headache, dizziness, feeling sick, tiredness, digestive problems, muscle pain and sleep problems. Uncommon ones include memory problems, hair loss, pins and needles, and sexual problems such as low libido or erectile dysfunction. Rare ones include muscle weakness (myopathy), nerve problems in the hands and feet, and tendon problems.^[1]

Leaflets list anything that was reported, even when it is not clear the drug caused it. To test cause and effect, researchers from the Cholesterol Treatment Trialists’ Collaboration pooled 23 large double blind trials: 19 comparing a statin with placebo (123,940 people) and 4 comparing stronger with weaker statin regimens (30,724 people). Neither patients nor doctors knew who got what, and follow up averaged close to five years.^[5]

This does not mean nobody ever has a true reaction. It means that, on average, most of these symptoms happen just as often in men taking a dummy pill. That is useful to know before you decide a statin is the cause.

Muscle Aches: The Complaint That Matters Most

Muscle symptoms are the main reason men stop statins. The 2022 analysis in The Lancet found muscle pain or weakness in 27.1% of people on a statin and 26.6% on placebo, a relative risk of 1.03. In the first year the excess was a little larger, but the authors estimated that only about 1 in 15 muscle reports in the statin group was actually caused by the statin.^[4]

When aches need a blood test

The NHS advises speaking to your doctor about muscle pain, tenderness or weakness you cannot explain, such as pain not caused by physical work. Your doctor may measure creatine kinase (CK), an enzyme released by damaged muscle. If CK rises sharply, the statin may be stopped, then restarted at a lower dose once levels return to normal.^[1] Hard exercise also raises CK, so mention a recent heavy workout or a weekend of yard work before the test.^[1]

Rhabdomyolysis, a severe breakdown of muscle, is the most serious statin complication but is rare.^[3] Strong muscle pain with weakness, or dark urine, needs urgent medical attention.

Interactions that raise the risk

Atorvastatin, simvastatin and lovastatin are broken down by a liver enzyme called CYP3A4. Drugs that block it, such as some antibiotics, azole antifungals and diltiazem, raise statin levels and the chance of side effects, and grapefruit juice should be avoided with some statins.^[3] The FDA added contraindications and dose limits to the lovastatin label for this reason.^[2] Always give your pharmacist a full list of medicines and supplements.

Some men try coenzyme Q10 for statin aches. The evidence is mixed; see our CoQ10 guide and ask your doctor before adding it.

Statins and Sexual Health: What the Mixed Evidence Says

This is where the internet and the evidence disagree the most. Here is what the sources we reviewed actually say.

• It is on the list. The NHS includes loss of libido and erectile dysfunction among uncommon statin side effects.^[1]
• Blinded trials do not confirm it. In the 2026 pooled analysis of 23 double blind trials, erectile dysfunction was among the listed effects with no significant excess in people taking a statin.^[5]
• Some small studies point the other way. A 2014 meta-analysis of small randomized trials (6 publications, 462 men) suggested statins may improve erectile function scores in men who already had erectile problems. When statins alone were compared with placebo, the difference was not statistically significant, so this is a hint, not proof.^[6]

Put together, the honest summary is that statins are not a proven cause of erection problems, and they are not a proven treatment either. Erections depend on healthy blood vessels, and the same plaque that a statin is meant to slow can affect the small arteries of the pelvic area as well as the heart. A change in erections around the time you start a statin deserves a conversation, because it may be an early sign of a vascular, hormonal or blood sugar problem that needs its own attention.

Blood Sugar, Memory and the Liver

Blood sugar

In 2012 the FDA added information to statin labels about increases in blood sugar and HbA1c, and about a small increased risk of being diagnosed with type 2 diabetes. The FDA has said the heart benefits of statins outweigh these small risks.^[2] If you have prediabetes, ask for your HbA1c to be checked regularly; our article on prediabetes in men covers the numbers.

Memory and confusion

The same FDA update added rare reports of memory loss and confusion, described as generally not serious and reversible after stopping the drug.^[2] In the large blinded trials, cognitive or memory impairment was reported at the same rate, 0.2% per year, with statin or placebo.^[5]

Liver tests

The FDA no longer recommends routine liver enzyme monitoring. Labels now call for a liver test before starting, then testing only when clinically needed, because routine checks did not appear to prevent serious liver injury.^[2] Statins are not used in active liver disease.^[3]

Feeling Off on a Statin? How to Work It Out With Your Doctor

Do not stop your statin without talking to the doctor who prescribed it. Stopping removes the protection it gives your heart and brain, and many problems can be solved without giving it up. These steps make the visit productive:

1. Write down the symptom and its timing. When did it start, did it follow a new statin or dose increase, and is it constant or related to activity?
2. List everything you take. Include antibiotics, antifungals, heart rhythm drugs, grapefruit juice and every supplement.
3. Ask about tests. CK for muscle symptoms, HbA1c for blood sugar, and a lipid panel to see how well the statin is working. StatPearls suggests a lipid check 4 to 12 weeks after starting or changing the dose.^[3]
4. Ask about options. The NHS notes a statin may be restarted at a lower dose after muscle problems settle.^[1] Your doctor may also try a different statin.
5. Look at the bigger picture. Sleep, alcohol, weight, stress and blood pressure all affect energy and sexual health. A regular health check can catch these.

Frequently Asked Questions

What is the most common statin side effect in men?

Muscle aches are the most reported. In blinded trials they were only slightly more common on a statin than on placebo, and most were not caused by the drug.^[4] Unexplained muscle pain or weakness should still be reported so your doctor can check CK.^[1]

Can statins cause erectile dysfunction?

The NHS lists it as uncommon, but a pooled analysis of 23 double blind trials found no significant excess on statins.^[1][5] If erections change, see your doctor rather than stopping the statin, because blood vessel, hormone and blood sugar problems are common causes at this age.

Do statins lower testosterone?

Testosterone is made from cholesterol, so men often ask this. None of the official sources we reviewed list low testosterone as a statin side effect. If you have low drive or fatigue, ask for a morning testosterone test; our guide to signs of low testosterone explains when it makes sense.

Should I avoid grapefruit on a statin?

It depends on the statin. Grapefruit juice should be avoided with some statins that are broken down by the CYP3A4 enzyme.^[3] Ask your pharmacist about your specific drug.

References

1. NHS. Side effects of statins (reviewed 2025). nhs.uk/conditions/statins/side-effects
2. U.S. Food and Drug Administration. FDA Drug Safety Communication: Important safety label changes to cholesterol-lowering statin drugs (2012). fda.gov/Drugs/DrugSafety/ucm293101
3. Sizar O, Khare S, Patel P, Talati R. Statin Medications. StatPearls, NCBI Bookshelf (updated 2024). ncbi.nlm.nih.gov/books/NBK430940
4. Cholesterol Treatment Trialists’ Collaboration (Reith C, et al.). Effect of statin therapy on muscle symptoms: an individual participant data meta-analysis of large-scale, randomised, double-blind trials. The Lancet (2022). ora.ox.ac.uk
5. University of Oxford. Statins do not cause the majority of side effects listed in package leaflets (summary of Reith C, Collins R, et al., The Lancet, 2026). ox.ac.uk/news
6. Cui Y, Zong H, Yan H, Zhang Y. The effect of statins on erectile dysfunction: a systematic review and meta-analysis. Journal of Sexual Medicine (2014). pubmed.ncbi.nlm.nih.gov/24628781

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. This article is for information only and is not medical advice.