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Sunday, 8 November 2015

A high diet quality based on dietary recommendations does not reduce the incidence of type 2 diabetes

A high diet quality based on dietary recommendations does not reduce the incidence of type 2 diabetes in the Malmo Diet and Cancer cohort
E. Sonestedt, E. Mandalazi, I. Drake, E. Wirfält, M. Orho-Melander;
Department of Clinical Sciences Malmö, Lund University, Malmö, Sweden.

Background and aims: A high diet quality index based on the Nordic nutrition recommendations and Swedish dietary guidelines has previously been associated with reduced risk of cardiovascular disease and mortality in the Malmö Diet and Cancer cohort. The aim was to investigate if this diet quality index was associated with risk of type 2 diabetes.

Materials and methods: Out of 26,172 participants (44 to 74 years) from the Malmö Diet and Cancer cohort study, 2,829 type 2 diabetes incident cases were identified from registers during 18 years of follow-up. A modified diet history method was used to estimate dietary intakes. A diet quality index was constructed based on adherence to the recommended intakes of saturated fat, polyunsaturated fat, fish and shellfish, dietary fiber, fruit and vegetables, and sucrose.

Results: After adjustments for potential confounders, we observe no significant association between diet quality index and type 2 diabetes risk. Hazard ratio for highest vs. lowest index category were among men 1.05 (95% CI: 0.88, 1.25; P-trend=0.94) and among women 1.03 (95% CI: 0.87, 1.22; P-trend=0.34). Exclusion of individuals reporting a substantial diet change in the past and energy mis-reporters did only marginally affect the results.

Conclusion: This study found no significant association between a high diet quality index based on the current dietary recommendations and reduced incidence of type 2 diabetes. Further investigation is needed to better understand how overall diet quality and individual dietary components are associated with the development of type 2 diabetes.

Supported by: Swedish Medical Research Council, Heart and Lung Foundation



chris c said...

Considering the dietary recommendations have changed somewhat in Sweden (see Diet Doctor blog) it will be very interesting to see how this changes in the future as an increasing percentage of the population follows LCHF - especially compared to neighbouring countries like Denmark and even more the UK.

Lowcarb team member said...

True Chris as every dietary intervention to attempt hold back the epidemic of T2 has been an epic fail, LCHF can be the answer to stem the tide and Sweden could lead the way.

Linda said...

I am reminded of a financial speaker who said, "Experts don't know what you think they know." Sadly, it's true.

Galina L. said...

I would expect a sugar limitation could make at least some difference, but it didn't. In Russia many diabetics I know just use fructose(sold in stores as a diabetic supply) in the place of a table sugar because it has a low glycemic index.