"Salmon and other fatty fish have omega-3s for heart health, and studies have shown salmon can help lower insulin levels and fight inflammation," Kristin told POPSUGAR. But the perks don't stop there. Research has also shown sufficient amounts of omega-3s to benefit mental health, including combating depression. Kristin recommends wild salmon two to three times a week or opting for walnuts (another great source of omega-3s) as an alternative.