Stigmasterol
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A plant sterol structurally related to cholesterol, found naturally in soybeans and other plants.
Why it’s used
Taken by some for a possible role in supporting healthy cholesterol levels, similar to other plant sterols.
What the evidence says
Plant sterols as a class have some evidence for modestly lowering LDL cholesterol at gram-level intakes, but most of that research concerns sitosterol and campesterol rather than stigmasterol specifically. Dedicated human evidence for stigmasterol alone is thin.
Where we looked
There was no paper to cite here, so this is the search instead — run it yourself and see what we saw.
- PubMed: 2 records · searched August 2026
"Stigmasterol"[Title/Abstract] AND ("dietary supplements"[MeSH] OR supplementation[Title/Abstract] OR supplement[Title/Abstract] OR supplements[Title/Abstract] OR "oral administration"[Title/Abstract]) AND (randomized controlled trial[pt] OR clinical trial[pt] OR meta-analysis[pt] OR systematic review[pt]) AND humans[MeSH] - PubMed: 2968 records · searched August 2026
"Stigmasterol"[Title/Abstract]
This says what this database holds under these terms. It is not a finding that no research exists.
Context
Where plant sterol blends have been studied for cholesterol effects, doses have generally been in the low grams per day range, but stigmasterol has rarely been isolated and tested on its own.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.