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arrow_backExplore/Plant Sterols
Tier-CPublic-ready6/27/2026

Plant Sterols

Cholesterol and triglycerides is the main area connected here, and any felt benefit should be read together with the human evidence base.

The 67.7 score includes research signals from patient or disease contexts. General supplement evidence is not repeated enough, so the C tier remains conservative.

Representative tier calculated from paper evidence that passed the collection audit.

Papers analyzed
80
Caution signal
Low
Context-specific research signal
67.7
Cholesterol and triglyceridesDigestion and gut comfortImmune and respiratory support

Main benefit evidence

The representative ingredient tier is calculated from these target-level evidence groups.

Blood lipids
6 studiesTier-B
Cholesterol and triglycerides
Fairly consistent positive signal in studiesFelt benefit focusPatient-group study

Potential benefit studied in Blood lipids. These findings come from a defined study population, so everyday effects may differ.

Evidence score
58.5
Study context
Patient-group study

This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.

Digestion and gut health
1 studiesTier-C
Digestion and gut comfort
Some positive signal observedFelt benefit focusPatient-group study

Potential benefit studied in Digestion and gut health. These findings come from a defined study population, so everyday effects may differ.

Evidence score
20.9
Study context
Patient-group study

This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.

Immune and respiratory health
1 studiesTier-C
Immune and respiratory support
Some positive signal observedFelt benefit focusPatient-group study

Potential benefit studied in Immune and respiratory health. These findings come from a defined study population, so everyday effects may differ.

Evidence score
20.9
Study context
Patient-group study

This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.

Glucose and metabolic health
1 studiesTier-C
Glucose and metabolic health markers
Some positive signal observedResearch marker focusPatient-group study

This card is closer to a measured biomarker or lab outcome than a directly felt user benefit. These findings come from a defined study population, so everyday effects may differ.

Evidence score
20.9
Study context
Patient-group study

This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.

Blood pressure and vascular health
2 studiesTier-C
Blood pressure and vascular health markers
Signal is still limitedResearch marker focusPatient-group study

This card is closer to a measured biomarker or lab outcome than a directly felt user benefit. These findings come from a defined study population, so everyday effects may differ.

Evidence score
7.8
Study context
Patient-group study

This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.

Recent research

Updated This Month10 new papers

Observed range in repeated studies

This range includes studies in specific patient groups. It is not a general dose or recommendation.

Lower observed study value
0.11
g/day
Higher observed study value
3.3
g/day
Only ranges repeated in human, oral, single-ingredient studies are shown.
Not personal dosing instructions, recommendations, or safety limits.

Key cautions to review

Standalone side-effect signals and combination cautions are listed separately.

Caution index
0.9
Caution band: Low
Caution signals
4
Side effects + combos + curated rules
Key precautions
No curated contraindication rule is available yet, but literature caution signals are shown below.
Standalone side effects, combination cautions, and positive combos are separated below.

Standalone side effects

Adverse health effects1 papers
The review notes that sterols can have adverse effects on health when established standards are not respected.human · systematic-review
Phytosterol oxidation products (POPs)1 papers
The review highlights a significant concern regarding the adverse effects of phytosterol oxidation products (POPs) formed within the body, noting that further investigation is required to elucidate their specific impact.human · systematic-review
adverse effects on nutritional status or physiological function1 papers
The review aims to look for adverse effects of phytosterols, phytostanols, or their esters on nutritional status or physiological function.human · systematic-review
Adverse effect signal1 papers
The review mentions a concern regarding adverse effects in the form of Phytosterol oxidation products (POPs), noting that further investigation is needed to elucidate their effect within the body.human · unknown

Evidence summaries

Paper IDs and full lists are private. Only study types and summaries are shown.

Key Evidence #1
Public scholarly dataCitation signal: 465
review

Functional foods with plant sterols/stanols may be considered in individuals with high cholesterol levels at intermediate or low global cardiovascular risk who do not qualify for pharmacotherapy and as an adjunct to pharmacologic therapy in high and very high

Key Evidence #2
Public scholarly dataCitation signal: 316
meta-analysis

The LDL-cholesterol-lowering effect of both plant sterols and stanols continues to increase up to intakes of approximately 3 g/d to an average effect of 12 %, with clear and comparable dose–response relationships observed.

Key Evidence #3
Public scholarly dataCitation signal: 255
observational

Plant sterol containing products reduced LDL concentrations but the reduction was related to individuals’ baseline LDL levels, food carrier, and frequency and time of intake, and the observed differences between trial results were unlikely to have been caused

3 more summariesLimited representative sample by study type.
>
Public scholarly dataCitation signal: 209
observational

These findings indicate that the decreased intestinal absorption of cholesterol and carotenoids by plant sterols and stanols is caused by two distinct mechanisms, which could be explained by the effects of the 4-desmethyl family and 4,4-dimethylsterols on mice

Public scholarly dataCitation signal: 171
review

Although phytosterols decrease LDL-cholesterol levels, there is no evidence that they reduce the risk of cardiovascular diseases; on the contrary, some studies suggest an increased risk of atherosclerosis with increasing serum levels of phytesterols.

Public scholarly dataCitation signal: 149
review

A general overview of the available evidence regarding the beneficial physiological and pharmacological activities of phytosterol activities is provided, with special emphasis on their therapeutic potential for human health and safety.

Plant Sterols
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