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Postprandial levels of GLP-1, GIP, and glucagon after two years of weight loss with a Paleolithic diet: a randomized controlled trial in healthy obese women
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Section of Medicine.ORCID iD: 0000-0001-9016-1139
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Section of Medicine.
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Section of Medicine.
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Section of Medicine.
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2019 (English)In: European Journal of Endocrinology, ISSN 0804-4643, E-ISSN 1479-683X, Vol. 180, no 6, p. 417-427Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE: To investigate how weight loss by different diets impacts on postprandial levels of glucagon-like peptide 1 (GLP-1), glucose-dependent insulinotropic polypeptide (GIP), and glucagon.

METHODS: In this single-centre, parallel group 2-year trial, 70 healthy postmenopausal obese women were randomized to the Paleolithic diet or a healthy control diet based on Nordic Nutrition Recommendations. Both diets were without calorie restriction. The primary outcome was the change in fat mass. Here, secondary analyses on GLP-1, GIP, and glucagon measured during an OGTT are described.

RESULTS: In the Paleolithic diet group, mean weight loss compared to baseline was 11% at 6 months, and 10% at 24 months. In the control diet group, mean weight loss was 6% after 6 and 24 months (P = 0.0001 and P = 0.049 for the comparison between groups at 6 and 24 months respectively). Compared to baseline, the mean incremental area under the curve (iAUC) for GLP-1 increased by 34% and 45% after 6 and 24 months in the Paleolithic diet group, and increased by 59% after 24 months in the control diet group. The mean iAUC for GIP increased only in the Paleolithic diet group. The AUC for glucagon increased during the first 6 months in both groups. The fasting glucagon increase correlated with the β-hydroxybutyrate increase.

CONCLUSIONS: Weight loss caused an increase in postprandial GLP-1 levels and a further rise occurred during weight maintenance. Postprandial GIP levels increased only after the Paleolithic diet. Reduced postprandial glucagon suppression may be caused by a catabolic state.

Place, publisher, year, edition, pages
Bioscientifica, 2019. Vol. 180, no 6, p. 417-427
Keywords [en]
glucagon, glucagon-like peptide 1, glucose-dependent insulinotropic polypeptide, glucose tolerance test, Paleolithic diet, weight loss
National Category
Endocrinology and Diabetes
Identifiers
URN: urn:nbn:se:umu:diva-158775DOI: 10.1530/EJE-19-0082ISI: 000468743400012PubMedID: 31042670OAI: oai:DiVA.org:umu-158775DiVA, id: diva2:1314295
Funder
Forte, Swedish Research Council for Health, Working Life and Welfare, 2006-0699Forte, Swedish Research Council for Health, Working Life and Welfare, 2010-0398Swedish Research Council, K2011-12237-15-16Swedish Heart Lung FoundationSwedish Diabetes AssociationVästerbotten County CouncilAvailable from: 2019-05-08 Created: 2019-05-08 Last updated: 2019-06-11Bibliographically approved

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Otten, JuliaRyberg, MatsMellberg, CarolineChorell, ElinLindahl, BerntLarsson, ChristelOlsson, Tommy

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