Heart HealthJanuary 29, 2026·5 min read
By the CIRRUS Editorial Team — how we write and source this
Statins: how they work and common questions
One of the most-prescribed medication classes in the world, and one of the most-misunderstood in terms of mechanism.
Statins work primarily by inhibiting an enzyme (HMG-CoA reductase) the liver uses to produce cholesterol — with less cholesterol being manufactured, the liver pulls more LDL out of the bloodstream to compensate, lowering circulating LDL levels.
Beyond the cholesterol-lowering effect, statins appear to have secondary anti-inflammatory effects on blood vessel walls that some researchers believe contribute independently to reduced cardiovascular event risk, beyond what the LDL number alone would predict.
Muscle aches are the most commonly reported side effect, though large controlled trials have found the true attributable rate lower than what's reported in real-world use — a phenomenon partly explained by the "nocebo effect," where expecting a side effect increases how often it's noticed and reported.
Statins aren't universally prescribed at the same intensity — dosing and target LDL levels are calculated against an individual's overall cardiovascular risk profile, not applied as a single fixed protocol for everyone with elevated cholesterol.
This article is general health information, not medical advice, and doesn’t replace evaluation by your own physician. Talk to a doctor about anything specific to your own diagnosis or treatment.