woman eating fish

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Stick to a Mediterranean diet.

A 2004 study found that adhering to a Mediterranean diet—rich in olive oil, fish, nuts, seeds, fruits, and vegetables—lowered CRP levels by an average of 20 percent. To get started, snack on walnuts between meals, and try to consume three portions a week of fish that are rich in omega-3 fatty acids, such as salmon and trout.