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Dietary patterns in Greenland and their relationship with type 2 diabetes mellitus and glucose intolerance

  • Charlotte Jeppesen (a1), Peter Bjerregaard (a1) and Marit E Jørgensen (a2)
Abstract
Abstract Objective

Traditional Inuit dietary patterns have been found to be beneficial for CVD but have not been investigated in relation to glucose intolerance. We examined the association between dietary patterns and type 2 diabetes mellitus (T2DM), impaired glucose tolerance (IGT) and impaired fasting glucose (IFG).

Design

Cross-sectional design with a priori derived dietary patterns from an FFQ resulted in five patterns: imported meat (n 196), traditional food (n 601), balanced diet (n 126), unhealthy diet (n 652) and standard diet (n 799).

Setting

Associations between dietary patterns and glucose-related outcomes were tested by linear and logistic regression analyses. Data included: dietary intake by FFQ, waist circumference, ethnicity, frequency of alcohol intake and smoking, physical activity, and oral glucose tolerance test results. Fasting participants and those without diagnosed T2DM were classified into normal glucose tolerance, IGT, IFG or T2DM. HOMA-IR (homeostatic model assessment–insulin resistance index) and HOMA-β (homeostatic model assessment of β-cell function) were calculated.

Subjects

Data included 2374 Inuit, aged 18+ years.

Results

Participants with a traditional dietary pattern had higher fasting plasma glucose (mean 5·73 (95 % CI 5·68, 5·78) mmol/l, P < 0·0001) and lowest HOMA-β (48·66 (95 % CI 46·86, 50·40), P < 0·0001). The traditional diet gave significantly higher odds for IFG and T2DM than the balanced diet, imported meat diet, standard diet and unhealthy diet.

Conclusions

Traditional food was positively associated with T2DM, IFG and fasting plasma glucose, and negatively associated with β-cell function, compared with a standard diet. The imported meat diet seemed the best in relation to glucose intolerance, with lowest fasting plasma glucose and lowest odds for IFG and T2DM.

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Corresponding author
*Corresponding author: Email charl.jeppesen@gmail.com
References
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