Roll Call

Oleic Acid — answers to omega-9 fatty acid

Plant

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A monounsaturated fatty acid abundant in olive oil and other plant and animal fats, sometimes used in supplements as a fat source or as a carrier oil in softgels.

Why it’s used

Included as a fatty-acid ingredient or oil base, and sometimes highlighted because of its presence in diets studied for cardiovascular health.

What the evidence says

Evidence linking monounsaturated fat intake to cardiovascular markers comes largely from studies of whole dietary patterns, such as Mediterranean-diet research, rather than trials of isolated oleic acid supplementation. There is no NIH ODS fact sheet treating it as a standalone supplement ingredient.

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: 94 records · searched August 2026"Oleic Acid"[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: 21745 records · searched August 2026"Oleic Acid"[Title/Abstract]

This says what this database holds under these terms. It is not a finding that no research exists.

Context

Studies of monounsaturated fat intake and health outcomes typically track dietary patterns over years, not a defined supplemental dose of isolated oleic acid.

Insufficient dataToo little has been studied to say either way.

Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.