This dietary pattern did not significantly affect 2-h post-pr and ial blood glucose and Matsuda index .
Conclusions Adherence to the ND might improve serum insulin and HOMA-IR levels ; however , this effect was not confirmed for other markers of blood glucose control .
Aims Investigations on the possible effect of the Nordic diet ( ND ) on the glycemic control and the risk of diabetes have led to inconsistent results .
The present study tried to determine the effect of the ND on the markers of blood glucose control using a systematic review and meta- analysis of r and omized controlled clinical trials ( RCTs ) .
Plasma alkylresorcinols reflect important whole-grain components of a healthy Nordic diet.
Biomarkers of dietary intake can be important tools in nutrition research . Our aim was to assess whether plasma alkylresorcinol ( AR ) and β-carotene concentrations could be used as dietary biomarkers for whole-grain , fruits and vegetables in a healthy Nordic diet ( ND ) . Participants ( n = 166 ) , 30 - 65 y with a body mass index of 27 - 40 kg/m(2 ) and two more features of metabolic syndrome ( International Diabetes Federation definition , slightly modified ) , were recruited through six centers in the Nordic countries and r and omly assigned to an ND or control diet for 18 or 24 wk , depending on study center . Plasma AR and β-carotene were analyzed and nutrient intake calculated from 4-d food records . Median fiber intake increased in the ND group from 2.5 g/MJ at baseline to 4.1 g/MJ ( P < 0.001 ) at end point ( week 18 or 24 ) , and median ( IQR ) fasting plasma total AR concentration increased from 73 ( 88 ) to 106 ( 108 ) nmol/L , or 45 % , from baseline to end point ( P < 0.001 ) . The AR concentration was significantly higher in the ND group ( P < 0.001 ) than in the control group at end point . β-Carotene intake tended to increase in the ND group ( P = 0.07 ) , but the plasma β-carotene concentration did not change significantly throughout the study and did not differ between the groups at follow-up . In conclusion , an ND result ed in higher dietary fiber intake and increased plasma total AR concentration compared with the control diet , showing that the total AR concentration might be a valid biomarker for an ND in which whole-grain wheat and rye are important components . No significant difference in plasma β-carotene concentrations was observed between the ND and control groups , suggesting that β-carotene may not be a sensitive enough biomarker of the ND
This dietary pattern did not significantly affect 2-h post-pr and ial blood glucose and Matsuda index .
Conclusions Adherence to the ND might improve serum insulin and HOMA-IR levels ; however , this effect was not confirmed for other markers of blood glucose control .
Aims Investigations on the possible effect of the Nordic diet ( ND ) on the glycemic control and the risk of diabetes have led to inconsistent results .
The present study tried to determine the effect of the ND on the markers of blood glucose control using a systematic review and meta- analysis of r and omized controlled clinical trials ( RCTs ) .