Jeg jobber både med ernæringsepidemiologi og klinisk ernæring. 

Epidemiologiske prosjekter omfatter analyse av kosthold og kroniske, ikke-smittsomme sykdommer som hjerte-kar, kreft, fedme og diabetes, men også nevrodegenerative sykdommer. Jeg har ledet ernæringsdelen av HUSK3 (Helseundersøkelsen i Hordaland, 2018-2021, se https://husk.w.uib.no/. I HUSK undersøker vi,i en eldre kohorte, sammenhengen av kosthold med vektutvikling og muskel helse, forkomst av diabetes og med Parkinson sykdom. Også undersøker vi kosthold og risiko for Parkinson sykdom i den europeiske EPIC kohorten, i lag med DKFZ Heidelberg i Tyskland (https://www.dkfz.de/epidemiologie-von-krebserkrankungen/epic). Videre er jeg interessert i årsaker og konsekvenser av sykdoms-relatert underernæring.  

Vi gjennomfører kliniske studier med matvarer, ingredienser og med næringsstoffer. Vi er spesielt interessert i helseeffekter av brød, fullkorn og kostfiber, og har gjennomført en del studier med brød, beta-glucan og andre kostfibertyper. Vi fikk støtte fra EU til et internasjonalt forskningsprosjekt Carbhealth (https://www.healthydietforhealthylife.eu/project/carbhealth) og gjennomførte også en store vekttap-studie med ulike dietter som del av Mohn Nutrition Research Laboratory (Trond Mohn stiftelse (tidligere Bergen research foundation) https://www.nohnfoundation.no/); https://www.uib.no/en/nutrition/120713/about-mohn-nutrition-research-lab

Videre er jeg interessert i helse effekter av mikroplast. Her forsker vi på dyrestudier på effekter av mikroplast, men gjennomfører også observasjonsstudier hos mennesker. Vi fikk her støtte fra UiB gjennom det marine satsningsområdet og  EU gjennom SEAS programmet https://www4.uib.no/en/research/research-projects/seas-shaping-european-research-leaders-for-marine-sustainability

 

 

Flere foredrag både i Norge og andre land, for eksempel 

https://www.dge.de/veranstaltungen/tagungen/arbeitstagung-2025/

Medlem i "systematic review centre" til nordiske ernæringsanbefalinger 2023 (aktiv fra 2020-2023)

Nestleder i Norsk selskap for ernæring https://norskselskapforernaering.no/

Styremedlem i Plastnetverk ved UiB og organisasjon av årlig mikroplast symposium 

Courses

Bachelorprogram in Human Nutrition

NUTR100   Introduction to clinical nutrition

NUTR203   Nutrition Physiology

NUTR290   Bachelor thesis

 

Masterprogram in Clinical Nutrition

ELMED326 Genetic disorders in Nutrient Metabolism

NUCLI390A og B Master thesis 

Vitenskapelig artikkel

• Habumugisha, Theogene; Stubbendorff, Anna; Tembo, Penias et al. (2025). Adherence to the EAT-lancet dietary pattern among older adults in Rwanda and its association with micronutrient intake. (ekstern lenke)
• Habumugisha, Theogene; Matsiko, Eric; Måren, Inger Elisabeth et al. (2025). Protein intake and muscle mass of community-dwelling older adults: a cross-sectional study in Kigali, Rwanda. (ekstern lenke)
• Hjorth, Therese; Schadow, Alena; Revheim, Ingrid et al. (2025). Effectiveness of regular oat β-glucan–enriched bread compared with whole-grain wheat bread on long-term glycemic control in adults at risk of type 2 diabetes: a randomized controlled trial. (ekstern lenke)
• Refosco, Alice; Dierkes, Jutta; Kögel, Tanja et al. (2025). Microplastics in human feces: a pilot study exploring links with dietary habits. (ekstern lenke)
• Starke, Alain Dominique; Dierkes, Jutta; Lied, Gülen Arslan et al. (2025). Supporting healthier food choices through AI-tailored advice: A research agenda. (ekstern lenke)
• Trollebø, Marte Almenning; Tangvik, Randi Julie; Skeie, Eli et al. (2025). Metabolic profiles and malnutrition in hospitalized adults: A metabolomic cohort study. (ekstern lenke)
• Dierkes, Jutta (2025). Gesundheitliche Aspekte hochverarbeiteter Lebensmittel. (ekstern lenke)
• Stutz, Bianca; Krueger, Bettina; Goletzke, Janina et al. (2024). Glycemic response to meals with a high glycemic index differs between morning and evening: a randomized cross-over controlled trial among students with early or late chronotype. (ekstern lenke)
• Trollebø, Marte Almenning; Tangvik, Randi Julie; Skeie, Eli et al. (2024). Malnutrition as a prognostic factor for 2-year mortality in hospitalized patients in Norway: A matched cohort study. (ekstern lenke)
• Zelzer, Sieglinde; Meinitzer, Andreas; Enko, Dietmar et al. (2024). Classification of Vitamin D Status Based on Vitamin D Metabolism: A Randomized Controlled Trial in Hypertensive Patients. (ekstern lenke)
• Anfinsen, Åslaug Matre; Myklebust, Vilde Haugen; Johannesen, Christina Osland et al. (2024). Serum concentrations of lipids, ketones and acylcarnitines during the postprandial and fasting state: the Postprandial Metabolism (PoMet) study in healthy young adults. (ekstern lenke)
• Habumugisha, Theogene; Måren, Inger Elisabeth; Matsiko, Eric et al. (2024). Older adults' perceptions about meat consumption: a qualitative study in Gasabo district, Kigali, Rwanda. (ekstern lenke)
• Jensen, Caroline; Sommersten, Cathrine Horn; Laupsa-Borge, Johnny et al. (2024). Quality and quantity of carbohydrates, faecal short-chain fatty acids and gastrointestinal symptoms– results from a randomised, controlled trial (CARBFUNC). (ekstern lenke)
• Revheim, Ingrid; Ballance, Simon; Standal, Adelheid Fretland et al. (2024). The acute effect of a β-glucan-enriched oat bread on gastric emptying, GLP-1 response, and postprandial glycaemia and insulinemia: a randomised crossover trial in healthy adults. (ekstern lenke)
• Bråtveit, Marianne; Parys, Anthea van; Olsen, Thomas et al. (2024). Association between dietary macronutrient composition and plasma one-carbon metabolites and B-vitamin cofactors in patients with stable angina pectoris. (ekstern lenke)
• Habumugisha, Theogene; Engebretsen, Ingunn Marie Stadskleiv; Måren, Inger Elisabeth et al. (2023). Reducing meat and/or dairy consumption in adults: a systematic review and meta-analysis of effects on protein intake, anthropometric values, and body composition. (ekstern lenke)
• Anfinsen, Åslaug Matre; Rosendahl-Riise, Hanne; Nygård, Ottar Kjell et al. (2023). Exploratory analyses on the effect of time since last meal on concentrations of amino acids, lipids, one-carbon metabolites, and vitamins in the Hordaland Health Study. (ekstern lenke)
• Sabir, Zoya; Dierkes, Jutta; Hjartåker, Anette et al. (2023). The association of dietary patterns with muscle mass and strength in old age: The Hordaland Health Study. (ekstern lenke)
• Anfinsen, Åslaug Matre; Johannesen, Christina Osland; Myklebust, Vilde Haugen et al. (2023). Time-Resolved Concentrations of Serum Amino Acids, One-carbon Metabolites, and B-vitamin Biomarkers during the Postprandial and Fasting State: The Postprandial Metabolism in Healthy Young Adults (PoMet) study. (ekstern lenke)
• Dahl, Helene; Meyer, Klaus; Sandnes, Kristina et al. (2023). Cystatin C proteoforms in chronic kidney disease. (ekstern lenke)
• Bubeck, Alena M.; Urbain, Paul; Horn, Cathrine et al. (2023). High-fat diet impact on intestinal cholesterol conversion by the microbiota and serum cholesterol levels. (ekstern lenke)

Vitenskapelig oversiktsartikkel/review

• Dierkes, Jutta; Nwaru, Bright I.; Ramel, Alfons et al. (2023). Dietary fiber and growth, iron status and bowel function in children 0–5 years old: a systematic review. (ekstern lenke)
• Ramel, Alfons; Nwaru, Bright I.; Lamberg-Allardt, Christel et al. (2023). White meat consumption and risk of cardiovascular disease and type 2 diabetes: a systematic review and meta-analysis. (ekstern lenke)
• Arnesen, Erik Kristoffer; Thorisdottir, Birna; Bärebring, Linnea et al. (2023). Nuts and seeds consumption and risk of cardiovascular disease, type 2 diabetes and their risk factors: a systematic review and meta-analysis. (ekstern lenke)
• Schadow, Alena M.; Revheim, Ingrid; Spielau, Ulrike et al. (2023). The Effect of Regular Consumption of Reformulated Breads on Glycemic Control: A Systematic Review and Meta-Analysis of Randomized Clinical Trials. (ekstern lenke)

Se en full oversikt over publikasjoner i Cristin

Utvalgte Publikasjoner 

2025

Hjorth T, Schadow A, Revheim I, Spielau U, Meyer K, Rieder A, Varela P, Ballance S, Koerner A, Landberg R, Buyken AE, Dierkes J, Rosendahl-Riise H. Effectiveness of regular oat β-glucan-enriched bread compared with whole-grain wheat bread on long-term glycemic control in adults at risk of type 2 diabetes: a randomized controlled trial. Am J Clin Nutr. 2025 Sep;122(3):724-732. doi: 10.1016/j.ajcnut.2025.06.018.

2024

Trollebø MA, Tangvik RJ, Skeie E, Grønning MK, Nygård O, Eagan TML, Dierkes J. Malnutrition as a prognostic factor for 2-year mortality in hospitalized patients in Norway: A matched cohort study. JPEN J Parenter Enteral Nutr. 2024 Apr;48(3):308-317. doi: 10.1002/jpen.2619.

2023

Sabir Z, Dierkes J, Hjartåker A, Rosendahl-Riise H. The association of dietary patterns with muscle mass and strength in old age: The Hordaland Health Study. Eur J Nutr. 2023 Oct;62(7):2739-2750. doi: 10.1007/s00394-023-03206-9.

2022

Ballance S, Mæhre HK, Rieder A, Arslan Lied G, Hindar Tvedt EK, Dierkes J. The solution properties of galactomannan after simulated digestion of guar fortified bread predict the extent of postprandial insulin reduction in healthy adult overweight subjects. Food Funct. 2022 Oct 3;13(19):9810-9821. doi: 10.1039/d2fo01762h. 

Toto B, Refosco A, O'Keeffe M, Barkhald ØH, Brønstad A, Lied GA, Yadetie F, Goksøyr A, Kögel T, Dierkes J. Intestinal permeability and gene expression after polyethylene and polyamide microplastic ingestion in Wistar rats. Toxicol Lett. 2022 Nov 1;370:35-41. doi: 10.1016/j.toxlet.2022.09.002.