What to watch with Omega-3 Index and Müdigkeit?

The Omega-3 Index measures the percentage of EPA and DHA in red blood cell membranes and is a validated biomarker for cardiovascular risk. A low index (<4%) is associated with higher cardiovascular risk, but direct evidence linking it to fatigue is weak. Fatigue is multifactorial (iron deficiency, sleep disorders, thyroid issues, stress). Omega-3s have anti-inflammatory properties, but whether raising the index specifically reduces fatigue is not supported by robust RCTs. Key watchpoints: The Omega-3 Index is not a fatigue diagnostic. A low value may indicate suboptimal intake, but supplementation should be discussed with a physician, especially if on blood thinners. Evidence is mostly observational/mechanistic; large human trials on fatigue are lacking.