Relationship between polyunsaturated fatty acid and eating disorders: Systematic review and meta-analysis.

•The current meta-analysis addressed that the patients with eating disorders were associated with significantly higher plasma total omega-3 fatty acids than those in controls.•Also, the patients with eating disorders were associated with significantly plasma lower levels of total omega-6 fatty acids and lower red blood cell membrane levels of total omega-6 fatty acids than those in controls.•Polyunsaturated fatty acid supplements were associated with a benefit to body weight outcomes but not disease severity and mood symptoms in interventional trials.