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Omega-6 to Omega-3 Ratio

Heart & circulation markers

What the test generally measures, and what to ask about it.

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Updated Jul 13, 2026

What is Omega-6 to Omega-3 Ratio?

A comparison of how much omega-6 fat you have relative to omega-3 fat in your blood.

This ratio compares your omega-6 fatty acids (common in many vegetable oils and processed foods) to your omega-3 fatty acids (from oily fish and some plants), reported as a single number rather than a concentration. A higher ratio is sometimes discussed in nutrition research as reflecting a diet heavier in omega-6 and lighter in omega-3, and can be associated with a more inflammatory dietary pattern. The ideal ratio is debated, and this is an optional, research-oriented marker rather than a routine test.

This glossary entry is for informational purposes only and is not a substitute for professional medical advice. Read our Terms of Use.

References

Official source "Omega-3 Fatty Acids - Health Professional Fact Sheet" NIH Office of Dietary Supplements. ods.od.nih.gov/factsheets/Omega3FattyAcids-HealthProfessional.

About our sources

Clinical / professional

Medical societies, specialty colleges, and professional associations whose consensus statements reflect clinical practice standards.

Peer-reviewed research

Original research articles and systematic reviews published in indexed journals and verified through PubMed or DOI.

History of updates

Published · Jul 13, 2026
First published; written and independently fact-checked against the cited sources.

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