Fish rich in omega-3 fatty acids—such as salmon and mackerel—and omega-3 supplements derived from fish oil are well known for their anti-inflammatory effects. Research published in the Journal of Experimental Medicine (March 7, 2005) may help explain why.
Resolvin E1: A Powerful Anti-Inflammatory Compound
According to the study, consuming fish oil provides the body with the raw materials needed to create resolvin E1, a naturally occurring compound with strong anti-inflammatory properties. The researchers found that resolvin E1 can:
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Reduce the migration of inflammatory cells to sites of injury
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Lower the activity of certain immune cells involved in the inflammatory process
This suggests that omega-3 intake not only influences inflammation indirectly but also helps the body manufacture a targeted molecule designed to resolve inflammation.
Possible Link to Cox-2 Inhibitor Risks
The same study explored a potential explanation for why Cox-2–inhibiting drugs (such as celecoxib/Celebrex and rofecoxib/Vioxx) may increase cardiovascular risk. The Cox-2 enzyme, which these drugs block, also plays a role in producing resolvin E1.
The authors proposed that by inhibiting Cox-2, these medications might reduce the body’s ability to generate resolvin E1, thereby removing an important natural anti-inflammatory mechanism. Although this interpretation is speculative, it offers a biologically plausible explanation that aligns with observed cardiovascular risks associated with long-term use of some Cox-2 inhibitors.
Educational only — not medical advice.
