EFFECTS OF A HEALTHY NORDIC DIET ON WEIGHT LOSS IN ADULTS: A SYSTEMATIC REVIEW AND META-ANALYSIS OF RANDOMIZED CONTROLLED CLINICAL TRIALS

Background and Aim: Studies on the effect of the Nordic diet (ND) on body weight and adiposity indices were conflicting. This study targeted to perform a systematic review and meta-analysis of randomized controlled clinical trials (RCTs) examined the effect of the ND on body weight and composition. Methods: PubMed, SCOPUS, ISI web of Science and Google Scholar were searched for the eligible studies up to April 2018. The weighted mean difference (WMD) in body weight and composition indices between the ND and control groups/periods was derived using random effects model. Results: In total, seven studies (n = 774 participants) were included in the present study. Five studies had illustrated the effect of the ND on weight, three on waist circumference (WC), two on body fat, and two on body mass index (BMI). The pooled analysis of eligible trials showed that those adhered to the ND, lost 1.83 kg [95% confidence interval (CI): -2.94, -0.73] more weight compared to controls. Our analysis also showed no remarkable changes of body fat (WMD = -1.14%, 95% CI: -2.30, 0.01, P = 0.054), BMI (WMD = -0.61 kg/m2, 95% CI: -1.42, 0.20, P = 0.142) and WC (WMD = -0.61 kg/m2, 95% CI: -1.42, 0.20, P = 0.142) values.Conclusion: Adherence to the ND significantly improves body weight which makes this dietary pattern a favorable choice for weight management. Future studies regarding the effect of the ND on weight and body composition in populations other than Nordic populations are highly recommended.

کلیدواژه ها:

Nordic Diet ، Baltic Sea Diet ، Body Weight ، Body Fat Percent ، Waist Circumference ، Systematic Review