Health effect of the New Nordic Diet in adults with increased waist circumference: a 6-mo randomized controlled trial

Am J Clin Nutr. 2014 Jan;99(1):35-45. doi: 10.3945/ajcn.113.069393. Epub 2013 Nov 20.


Background: The regional Mediterranean Diet has been associated with lower risk of disease.

Objective: We tested the health effects of the New Nordic Diet (NND), which is a gastronomically driven regional, organic, and environmentally friendly diet, in a carefully controlled but free-living setting.

Design: A total of 181 centrally obese men and women, with a mean (range) age of 42 y (20-66 y), body mass index (in kg/m(2)) of 30.2 (22.6-47.3), and waist circumference of 100 cm (80-138 cm) were randomly assigned to receive either the NND (high in fruit, vegetables, whole grains, and fish) or an average Danish diet (ADD) for 26 wk. Participants received cookbooks and all foods ad libitum and free of charge by using a shop model. The primary endpoint was the weight change analyzed by both completer and intention-to-treat analyses.

Results: A total of 147 subjects [81% (NND 81%; ADD 82%)] completed the intervention. A high dietary compliance was achieved, with significant differences in dietary intakes between groups. The mean (±SEM) weight change was -4.7 ± 0.5 kg for the NND compared with -1.5 ± 0.5 kg for the ADD (adjusted difference: -3.2 kg; 95% CI: -4.6, -1.8 kg; P < 0.001) for the completer analysis, and the difference was -3.0 kg (95% CI: -4.0, -2.1 kg) for the intention-to-treat analysis. The NND produced greater reductions in systolic blood pressure (adjusted difference: -5.1 mm Hg; 95% CI: -8.2, -2.1 mm Hg) and diastolic blood pressure (adjusted difference: -3.2 mm Hg; 95% CI: -5.7, -0.8 mm Hg) than did the ADD.

Conclusion: An ad libitum NND produces weight loss and blood pressure reduction in centrally obese individuals. This trial was registered at as NCT01195610.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Animals
  • Blood Pressure
  • Body Mass Index
  • Cardiovascular Diseases / blood
  • Cardiovascular Diseases / prevention & control
  • Diet Records
  • Diet*
  • Edible Grain
  • Energy Intake
  • Feeding Behavior*
  • Female
  • Fishes
  • Fruit
  • Humans
  • Linear Models
  • Male
  • Middle Aged
  • Obesity, Abdominal / diet therapy*
  • Patient Compliance
  • Risk Factors
  • Vegetables
  • Waist Circumference*
  • Weight Loss
  • Young Adult

Associated data