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Effects of a healthy Nordic diet on cardiovascular risk factors in hypercholesterolaemic subjects: a randomized controlled trial (NORDIET)
Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism, Uppsala University, Uppsala, Sweden.
Lantmännen R and D, Stockholm, Sweden.
Bollnäs Heart Clinic, Mitt Hjärta, Bollnäs, Sweden.
Bollnäs Heart Clinic, Mitt Hjärta, Bollnäs, Sweden.
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2011 (English)In: Journal of Internal Medicine, ISSN 0954-6820, E-ISSN 1365-2796, Vol. 269, no 2, p. 150-159Article in journal (Refereed) Published
Abstract [en]

Objective:

The aim of this study was to investigate the effects of a healthy Nordic diet (ND) on cardiovascular risk factors.

Design and subjects:

In a randomizedcontrolled trial (NORDIET) conducted in Sweden, 88 mildly hypercholesterolaemic subjects were randomly assigned to an ad libitum ND or control diet (subjects' usual Western diet) for 6 weeks. Participants in the ND group were provided with all meals and foods. Primary outcome measurements were low-density lipoprotein (LDL) cholesterol, and secondary outcomes were blood pressure (BP) and insulin sensitivity (fasting insulin and homeostatic model assessment-insulin resistance). The ND was rich in high-fibre plant foods, fruits, berries, vegetables, whole grains, rapeseed oil, nuts, fish and low-fat milk products, but low in salt, added sugars and saturated fats.

Results:

The ND contained 27%, 52%, 19% and 2% of energy from fat, carbohydrate, protein and alcohol, respectively. In total, 86 of 88 subjects randomly assigned to diet completed the study. Compared with controls, there was a decrease in plasma cholesterol (-16%, P < 0.001), LDL cholesterol (-21%, P < 0.001), high-density lipoprotein (HDL) cholesterol (-5%, P < 0.01), LDL/HDL (-14%, P < 0.01) and apolipoprotein (apo)B/apoA1 (-1%, P < 0.05) in the ND group. The ND reduced insulin (-9%, P = 0.01) and systolic BP by -6.6 ± 13.2 mmHg (-5%, P < 0.05) compared with the control diet. Despite the ad libitum nature of the ND, body weight decreased after 6 weeks in the ND compared with the control group (-4%, P < 0.001). After adjustment for weight change, the significant differences between groups remained for blood lipids, but not for insulin sensitivity or BP. There were no significant differences in diastolic BP or triglyceride or glucose concentrations.

Conclusions:

A healthy ND improves blood lipid profile and insulin sensitivity and lowers blood pressure at clinically relevant levels in hypercholesterolaemic subjects. © 2010 The Association for the Publication of the Journal of Internal Medicine.

Place, publisher, year, edition, pages
Oxford: Blackwell Publishing, 2011. Vol. 269, no 2, p. 150-159
Keyword [en]
cardiovascular risk factors, cholesterol, diet, Nordic foods, nutrition
National Category
Social Sciences Medical and Health Sciences
Identifiers
URN: urn:nbn:se:hh:diva-18881DOI: 10.1111/j.1365-2796.2010.02290.xISI: 000286110100004Scopus ID: 2-s2.0-78651084052OAI: oai:DiVA.org:hh-18881DiVA, id: diva2:537610
Available from: 2012-06-27 Created: 2012-06-25 Last updated: 2017-12-07Bibliographically approved

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