You have probably heard that omega-3 fatty acids are anti-inflammatory. That description is incomplete. A newer framework describes omega-3s less as suppressors and more as raw materials for signals that actively end an inflammatory response.
The key players are specialized pro-resolving mediators, or SPMs. These are compounds the body makes from EPA and DHA, the long-chain omega-3s found in fatty fish. A 2024 review in Journal of Functional Foods explains that SPMs do something different from simply blocking inflammation. They help resolve it: they encourage neutrophils, an early responder cell, to die off on schedule; they help macrophages clear the debris; and they support tissue repair. In other words, omega-3s provide the substrate, and the body converts that substrate into stop signals.
This distinction matters for what you put on your plate. If the goal is to support the resolution pathway, the most direct dietary move is to eat foods that supply EPA and DHA. The American Heart Association and the Academy of Nutrition and Dietetics recommend eating at least 3 to 4 ounces of fish, preferably oily fish such as salmon, sardines, mackerel, or herring, twice a week. Plant sources like walnuts, flaxseeds, and chia seeds provide alpha-linolenic acid, a shorter omega-3 that the body converts to EPA and DHA, though the conversion is limited.
What this does not mean is that eating fish will “cure” inflammation or replace medical care. The 2024 review notes that clinical translation of SPM-based therapies is still developing and that optimal approaches are not yet settled. What the evidence does support is a practical shift: treat omega-3-rich foods as a regular part of a varied diet, not as a supplement to take after inflammation appears.
