The Omega-3 Index measures the percentage of EPA and DHA in red blood cells and is primarily used as a cardiovascular risk marker. For skin health, omega-3 fatty acids have anti-inflammatory properties and may support conditions like acne, eczema, or photoaging. However, direct evidence linking the Omega-3 Index to specific skin outcomes is limited and mostly based on mechanistic or observational studies. Consumer tests often overstate the predictive value for skin benefits. While a high Omega-3 Index (>8%) is generally favorable for overall health, it does not guarantee improved skin appearance or function. Safety note: High doses of omega-3s (>3 g/day) may increase bleeding risk; consult a physician before supplementation.
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