High cholesterol is often termed a “silent killer” and ranks as one of the most significant health challenges globally. As reported by the CDC, approximately 86 million adults in the United States suffer from elevated cholesterol levels, which heightens their risk of heart attack, stroke, and heart disease.

The issue isn’t cholesterol itself; this fatty, waxy substance is mainly produced in the liver and is essential for various bodily functions, such as building cells, hormone production, and aiding digestion.

The problem arises when there’s an excess of “bad” cholesterol, known as low-density lipoprotein (LDL) cholesterol.

Genetic predispositions combined with unhealthy lifestyle choices—like a diet high in saturated fats, lack of exercise, obesity, and smoking—can elevate LDL levels, leading to cholesterol accumulation in artery walls.

Over time, this can lead to the formation of hard fatty plaques that narrow and harden blood vessels, restricting blood flow to the heart and brain, significantly raising the risk of heart disease, which can be life-threatening.

One of the most effective treatments for high cholesterol involves medications known as statins, which decrease cholesterol production by the liver.

High doses of statins can lower LDL cholesterol by approximately 50%. For individuals with very high cholesterol, these drugs can reduce the risk of heart attacks or strokes by up to 40 to 50%.

Yet, despite their life-saving potential, statins have been surrounded by misconceptions, fear, and uncertainty regarding possible side effects, leading many to avoid them.

In this article, we will debunk five common myths about statins to clarify the facts.

Myth 1: Muscle pain is a common side effect

Muscle pain is frequently reported by patients using statins. However, new studies suggest this might be a manifestation of the “nocebo effect,” where individuals anticipating side effects are more likely to perceive them.

This was illustrated in a major randomized trial led by Professor Peter Thurber from Imperial College London. During the initial phase when participants were unaware if they were taking a statin or a placebo, both groups reported similar muscle pain levels.

In the second phase, those informed they were on statins reported muscle pain symptoms increase by up to 41%.

“These symptoms are genuine. However, our findings indicate the drug isn’t the cause, with actual muscle-related side effects from statins being quite rare,” Professor Thurber explains.

This conclusion was backed by comprehensive research. A meta-analysis from the Cholesterol Treatment Trial List Collaboration found similar rates of muscle symptoms in both statin (27.1%) and placebo (26.6%) groups, with over 90% of reported muscle symptoms not caused by statins.

Dr. Christina Reese, Associate Professor at Oxford Population Health and co-author of the study states:

“Randomized controlled trials provide more reliable data because participants randomly receive either a statin or placebo, allowing a clear comparison to ascertain if the drug is genuinely responsible for the symptoms,” she explains.

Myth 2: Statins cause diabetes

Another prevalent fear regarding statins is their potential to induce diabetes. While there’s some validity to this concern, it’s often oversimplified.

Statins do not abruptly cause diabetes in otherwise healthy individuals. They can incrementally raise blood sugar levels, hence accelerating the diabetes diagnosis for those already predisposed.

Naveed Sattar, Professor of cardiometabolic medicine at the University of Glasgow, clarifies that statins lead to slight increases in blood sugar levels.

“A diabetes diagnosis typically occurs at blood sugar levels of 48 mmol/mol or higher,” Sattar states. “Most individuals remain well below this threshold, therefore the minor increase isn’t concerning. However, for those nearing diagnostic criteria, it might result in an earlier diagnosis.”

He further emphasizes that potential increases in blood sugar can be effectively managed with small, sustainable lifestyle modifications, such as increased physical activity, weight loss, and improved dietary habits.

The communication surrounding diabetes risk may create unnecessary alarm; for example, a 2024 large-scale analysis revealed that low-intensity statins have a 10% higher relative diabetes risk compared to placebo, while higher-intensity statins show a 36% increased relative risk.

“Though these numbers might seem concerning,” she adds, “it’s essential to consider the absolute risk change. In low-intensity trials, there was about a 0.12% annual increase in new diabetes cases, or just over 1 case per 1,000 individuals.”

“In higher-intensity trials, the absolute increase was 1.27% per year, equating to approximately 13 additional cases per 1,000 annually.”

Both Reith and Sattar underline that concerns about diabetes risk should not deter statin use, emphasizing that the substantial reduction in heart attacks and strokes associated with statin therapy far outweighs these risks.

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Myth 3: Statins cause memory loss

Memory is a crucial aspect of our identity, making the mention of memory loss as a potential statin side effect understandably worrisome.

Like all medications, statins carry a lengthy list of potential side effects, including memory loss, depression, and sleep disorders.

However, how critical are these side effects in practice? Findings suggest they are not as severe as often portrayed.

In February 2026, Reese and colleagues conducted a comprehensive review, revealing that most listed side effects are not genuinely attributable to statins.

The study analyzed data from the Cholesterol Treatment Trialist Collaboration involving 23 large randomized trials and over 150,000 participants.

Researchers discovered similar side effect reports in both statin and placebo groups. Specifically, 2 in 1,000 individuals report cognitive or memory issues yearly, regardless of whether they are on statins or a placebo.

In summary, although some individuals may experience forgetfulness during treatment, there is insufficient evidence to establish a direct link between statins and memory loss.

“Statins save lives, and our study reassures that benefits far exceed the risks for the majority of patients,” asserts Rees.

Myth 4: Liver damage is a significant risk

Similar to diabetes concerns, worries that statins may cause liver damage are not entirely baseless.

In a small fraction of cases, blood tests may reveal mild elevations in liver enzymes such as transaminases, indicating inflammation.

“Typically, these elevations are minor, symptom-free, and often resolve independently. In some cases, your doctor might advise lowering the dosage or temporarily discontinuing the statin,” explains Reese.

Consequently, doctors frequently assess liver function prior to starting treatment and perform follow-up tests in the initial months to monitor any complications.

However, severe issues are uncommon. A 2026 review by Reith et al. revealed that abnormal liver transaminases were present in 0.30% of statin patients compared to 0.22% in placebo groups, which translates to fewer than one additional case per 1,000 individuals annually.

“Importantly, these mild changes did not result in permanent damage, nor did they correlate with severe liver symptoms like hepatitis, liver failure, or jaundice,” Reese adds.

Myth 5: Taking statins alone is enough

Regrettably, statins are not a panacea. They are very effective for reducing cholesterol, but their maximum benefits are realized when paired with lifestyle changes aimed at enhancing overall health.

In one notable observation study, involving 265,209 high-risk adults, those who combined statin use with a healthy lifestyle—such as proper diet, regular exercise, and limited alcohol consumption—had a lifespan approximately six years longer than those with unhealthy habits who didn’t take statins.

Crucially, individuals who took statins but persisted in unhealthy lifestyle choices did not experience a significant reduction in mortality risk, compared to those who did not use statins but led unhealthy lives.

“Starting statin therapy does not grant a free pass to neglect healthy habits,” Sattar emphasizes. “In fact, it serves as motivation to cultivate healthier lifestyle choices, thereby boosting their benefits.”

“This involves enhancing your diet with more fiber, fruits, and vegetables, opting for healthy fats such as olive oil, nuts, and avocados, and reducing saturated fats and sugary beverages. Additionally, increasing physical activity, minimizing alcohol intake, avoiding smoking, and managing weight are crucial. Even slight weight loss or just 10 minutes of daily walking can yield significant benefits.”

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