Omega-6 / Omega-3 ratio
Omega fatty acidsAlso known as: n-6 to n-3 ratio, omega ratio, Omega, omega-6/omega-3
This ratio compares total omega-6 to total omega-3 fatty acids, reflecting the overall balance of inflammatory and anti-inflammatory lipid mediators.
Why this matters
A lower ratio (typically around 3:1 to 5:1) is associated with reduced inflammation and better cardiovascular and metabolic health. Western diets often have higher ratios, increasing chronic disease risk.
How this connects to other biomarkers
- Omega-6/Omega-3 Ratio < 4 is considered optimal; modern Western diets often run at 15:1 or higher.
- High ratios with low Omega-3 Index and elevated hs-CRP indicate diet-driven systemic inflammation.
- The ratio falls with EPA/DHA supplementation and reduction in seed oils; track alongside AA / EPA Ratio for response.
How often should I test Omega-6 / Omega-3 ratio?
Most adults benefit from yearly Omega-6/Omega-3 ratio testing as part of a fatty acid panel. After a sustained change in diet or supplementation, retest at 3 to 4 months.
At baseline / for screening: Once every 12 months as part of a fatty acid panel. More frequently, every 3 to 6 months, if you're managing a cardiometabolic concern where fatty acids matter.
When monitoring an intervention or change: Retest 3 to 4 months after a sustained change in dietary fat, such as increasing fatty fish, omega-3 supplements (EPA/DHA), or reducing seed oils. Red cell membranes take this long to fully reflect the new intake. Day-to-day variability is minimal, so only sustained dietary patterns shift the picture meaningfully; don't expect quick changes from short-term diet shifts.
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