Benefits
Lower LDL cholesterol
Plant sterols at about 2 grams per day lower LDL (bad) cholesterol, a benefit recognized by major reviews and regulators.
Supports healthy cholesterol levels
Plant sterols lower LDL cholesterol, a well-established marker used in managing heart health, as part of a diet low in saturated fat. Note that LDL is a surrogate marker: while sterols consistently lower it, randomized trials have not demonstrated that sterol supplements reduce cardiovascular events or mortality.
Complements diet and statins
Plant sterols add to the cholesterol-lowering effect of a healthy diet and can complement cholesterol medication under medical guidance.
Mechanism of action
Blocked cholesterol absorption
Plant sterols compete with cholesterol for uptake in the intestine, reducing the amount of dietary and biliary cholesterol absorbed.
Increased LDL clearance
Lower absorption prompts the liver to pull more LDL cholesterol from the blood.
Clinical trials
Review of plant sterols and stanols in cholesterol management and cardiovascular prevention. (Barkas et al. 2023, Nutrients)
Adults across the evidence base.
About 2 grams per day of plant sterols consistently lowered LDL cholesterol; the review notes this is a surrogate marker and that a reduction in cardiovascular events has not been established.