People who eat more Omega-3s (like fish oil) seem to age more slowly, but this effect is stronger in Black and White adults than in Mexican American adults — suggesting that how Omega-3 affects aging might be different by ethnicity.

We analyzed the available evidence and found that people who eat more omega-3s, such as from fish oil, appear to age more slowly, but this pattern seems to vary by ethnicity. The evidence we’ve reviewed suggests the effect is stronger in Black and White adults compared to Mexican American adults, indicating that how omega-3s relate to aging may differ across groups [1]. We did not find any studies that contradict this observation. However, the evidence is limited to a single assertion, and we don’t have details on how aging was measured, what amounts of omega-3 were consumed, or whether other lifestyle factors were accounted for. The term “aging more slowly” here likely refers to markers like cellular aging or inflammation, but without more context, we can’t say exactly what was observed. We also don’t know if these differences are due to genetics, diet patterns, access to healthcare, or other factors tied to ethnicity. The data doesn’t explain why the effect might be weaker in Mexican American adults, nor does it confirm whether increasing omega-3 intake would change the pattern. What we’ve found so far points to a possible variation in how omega-3s are linked to aging across these groups, but we can’t say this is a universal rule or that it applies to every individual. More research is needed to understand the reasons behind these differences. If you’re thinking about omega-3s for health, eating more fatty fish or considering a supplement might be worth exploring — but don’t assume it will affect you the same way it does someone else. Individual responses can vary.