Is Omega-3 Index useful for fertility?

The Omega-3 Index measures EPA and DHA in red blood cells and is considered a marker for omega-3 status. For fertility, there is suggestive evidence: omega-3s support sperm quality, oocyte maturation, and implantation. However, the evidence is not conclusive – many studies are observational or small. The index itself is not a direct fertility test but a general health marker. An optimal level (>8%) may support fertility, but it does not replace specific diagnostics. Caveat: evidence is moderate, and individual factors (hormones, anatomy) are more critical. MyBody-X offers the Omega-3 Index as a blood test, but its specific utility for fertility is not substantiated in the provided context.