From the research linked in the article: “The inflammatory potential of diet was assessed through a DII score which considers literature-derived associations o

From the research linked in the article: “The inflammatory potential of diet was assessed through a DII score which considers literature-derived associations of 45 food parameters with levels of pro- and anti-inflammatory cytokines in the blood; higher values indicated a more pro-inflammatory diet.” This doesn’t negate the potential problems of self-reported diet, though.