Professor 

Academic article

• Nikolai Bøgseth Aunbakk; Siv Kjølsrud Bøhn; Johnny Laupsa-Borge et al. (2026). Heterogeneity in postprandial glucose-insulin and triacylglycerol dynamics and associations with plasma metabolome and body composition in obesity. (external link)
• Julie Eirin Billing; Daniela Melitta Pfabigan; Elisabeth Kjelsvik Steinsvik et al. (2026). Associations between childhood behavior and current cognitive and emotional function in adults with irritable bowel syndrome—a cross sectional retrospective study. (external link)
• Tilde Martinsen; Caroline Jensen; Jan Gunnar Hatlebakk et al. (2026). Gastrointestinal symptoms, faecal short-chain fatty acids and dietary intake in older adults: the Hordaland Health Study 3. (external link)
• Camilla Thuen; Robin Maria Francisca Kenter; Jørg Assmus et al. (2026). Internet-delivered cognitive behavioral therapy and FODMAP diet for adults with irritable bowel syndrome: A four-arm randomized controlled trial. (external link)
• Muhammad Umael Khan; Ingeborg Brønstad; Eline Margrete Randulff Hillestad et al. (2025). Increase in circulating GLP-1 following low FODMAP diet in irritable bowel syndrome patients. (external link)
• Camilla Thuen; Hanne Karoline Hinderaker; Elisabeth Kjelsvik Steinsvik et al. (2025). Implementing a digital treatment program for patients with irritable bowel syndrome into routine care: a qualitative evaluation of barriers and facilitators perceived by key stakeholders. (external link)
• Alain Dominique Starke; Jutta Dierkes; Gülen Arslan Lied et al. (2025). Supporting healthier food choices through AI-tailored advice: A research agenda. (external link)
• Sol Maja Graasvold Bjørkevoll; Eline Margrete Randulff Hillestad; Gülen Arslan Lied et al. (2025). A 12-Week Strict Low FODMAP Diet Reduces the Severity Levels of Fatigue, Depression, Anxiety, and Inattention in Patients with Irritable Bowel Syndrome. (external link)
• Arvid Lundervold; Ben René Bjørsvik; Julie Eirin Billing et al. (2025). Brain Morphometry and Cognitive Features in the Prediction of Irritable Bowel Syndrome. (external link)
• Eline Margrethe Randulff Hillestad; Elisabeth Kjelsvik Steinsvik; Erica Sande Teige et al. (2024). Nutritional safety and status following a 12-week strict low FODMAP diet in patients with irritable bowel syndrome. (external link)
• Erica Sande Teige; Eline Margrethe Randulff Hillestad; Elisabeth Kjelsvik Steinsvik et al. (2024). Fecal bacteria and short-chain fatty acids in irritable bowel syndrome: relations to subtype. (external link)
• Caroline Jensen; Cathrine Horn Sommersten; Johnny Laupsa-Borge et al. (2024). Quality and quantity of carbohydrates, faecal short-chain fatty acids and gastrointestinal symptoms– results from a randomised, controlled trial (CARBFUNC). (external link)
• Astri J. Lundervold; Julie Eirin Billing; Birgitte Berentsen Jacobsen et al. (2024). Decoding IBS: a machine learning approach to psychological distress and gut-brain interaction. (external link)
• Julie Eirin Billing; Birgitte Berentsen Jacobsen; Arvid Lundervold et al. (2023). Cognitive function in patients with irritable bowel syndrome: impairment is common and only weakly correlated with depression/anxiety and severity of gastrointestinal symptoms. (external link)
• Astri J. Lundervold; Eline Margrethe Randulff Hillestad; Gülen Arslan Lied et al. (2023). Assessment of Self-Reported Executive Function in Patients with Irritable Bowel Syndrome Using a Machine-Learning Framework. (external link)
• Alena M. Bubeck; Paul Urbain; Cathrine Horn et al. (2023). High-fat diet impact on intestinal cholesterol conversion by the microbiota and serum cholesterol levels. (external link)
• Noman Haleem; Astri J. Lundervold; Gülen Arslan Lied et al. (2023). A psychological symptom based machine learning model for clinical evaluation of irritable bowel syndrome. (external link)
• Cathrine Horn; Eirin Semb Gjerde; Johnny Laupsa-Borge et al. (2023). Relationship between Ketones, Ghrelin, and, Appetite on Isocaloric Diets with Varying Carbohydrate Quality and Amount: Results from a Randomized Controlled Trial in People with Obesity (CARBFUNC). (external link)
• Benuarda Toto; Alice Refosco; Maria O'Keeffe et al. (2022). Intestinal permeability and gene expression after polyethylene and polyamide microplastic ingestion in Wistar rats. (external link)
• Tarek Mazzawi; Trygve Hausken; Per Førde Refsnes et al. (2022). The Effect of Anaerobically Cultivated Human Intestinal Microbiota Compared to Fecal Microbiota Transplantation on Gut Microbiota Profile and Symptoms of Irritable Bowel Syndrome, a Double-Blind Placebo-Controlled Study. (external link)
• Malin Mandelid Kleppe; Ingeborg Brønstad; Gülen Arslan Lied et al. (2022). Intestinal barrier integrity in anorexia nervosa (a pilot study). (external link)
• Caroline Jensen; Marie Fagervik Antonsen; Gülen Arslan Lied (2022). Gut microbiota and fecal microbiota transplantation in patients with food allergies: A systematic review. (external link)
• Simon Ballance; Hanne Kirsti Mæhre; Anne Rieder et al. (2022). The solution properties of galactomannan after simulated digestion of guar fortified bread predict the extent of postprandial insulin reduction in healthy adult overweight subjects. (external link)
• Tarek Mazzawi; Magdy El-Salhy; Gülen Arslan Lied et al. (2021). The Effects of Fecal Microbiota Transplantation on the Symptoms and the Duodenal Neurogenin 3, Musashi 1, and Enteroendocrine Cells in Patients With Diarrhea-Predominant Irritable Bowel Syndrome. (external link)
• Hanna Fjeldheim Dale; Julianne Cecilie Høibak Johannessen; Ingeborg Brønstad et al. (2021). Assessment of markers of gut integrity and inflammation in non-celiac gluten sensitivity after a gluten free-diet. (external link)
• Caroline Jensen; Hanna Fjeldheim Dale; Trygve Hausken et al. (2020). The effect of supplementation with low doses of a cod protein hydrolysate on satiety hormones and inflammatory biomarkers in adults with metabolic syndrome: A randomized, double-blind study. (external link)
• Ute Kessler; Guro Årdal Rekkedal; Øyvind Rø et al. (2020). Association between gastrointestinal complaints and psychopathology in patients with anorexia nervosa. (external link)
• Caroline Jensen; Hanna Fjeldheim Dale; Trygve Hausken et al. (2020). Supplementation with low doses of a cod protein hydrolysate on glucose regulation and lipid metabolism in adults with metabolic syndrome: A randomized, double-blind study. (external link)
• Birgitte Berentsen; Bharath Halandur Nagaraja; Erica Persson Teige et al. (2020). Study protocol of the Bergen brain-gut-microbiota-axis study: A prospective case-report characterization and dietary intervention study to evaluate the effects of microbiota alterations on cognition and anatomical and functional brain connectivity in patients with irritable bowel syndrome. (external link)
• Tarek Mazzawi; Øystein Solberg Eikrem; Gülen Arslan Lied et al. (2020). Abnormal Uroguanylin Immunoreactive Cells Density in the Duodenum of Patients with Diarrhea-Predominant Irritable Bowel Syndrome Changes following Fecal Microbiota Transplantation. (external link)
• Tarek Mazzawi; Trygve Hausken; Johannes Espolin Roksund Hov et al. (2019). Clinical response to fecal microbiota transplantation in patients with diarrhea-predominant irritable bowel syndrome is associated with normalization of fecal microbiota composition and short-chain fatty acid levels. (external link)
• Hanna Fjeldheim Dale; Caroline Jensen; Trygve Hausken et al. (2019). Effects of a Cod Protein Hydrolysate Supplement on Symptoms, Gut Integrity Markers and Fecal Fermentation in Patients with Irritable Bowel Syndrome. (external link)
• Caroline Jensen; Hanna Fjeldheim Dale; Trygve Hausken et al. (2019). Supplementation with cod protein hydrolysate in older adults: A dose range cross-over study. (external link)
• Hanna Fjeldheim Dale; Lise Madsen; Gülen Arslan Lied (2019). Fish-derived proteins and their potential to improve human health. (external link)
• Hanna Fjeldheim Dale; Caroline Jensen; Trygve Hausken et al. (2019). Acute effect of a cod protein hydrolysate on postprandial acylated ghrelin concentration and sensations associated with appetite in healthy subjects: a double-blind crossover trial. (external link)
• Gülen Arslan Lied; Kjetil B. Lund; Torgeir Storaas (2019). Intraoperative anaphylaxis to gelatin-based hemostatic agents: a case report. (external link)
• Hanna Fjeldheim Dale; Jan Gunnar Hatlebakk; Nils Hovdenak et al. (2018). The effect of a controlled gluten challenge in a group of patients with suspected non-coeliac gluten sensitivity: A randomized, double-blind placebo-controlled challenge. (external link)
• Ellen Johanne Vara; Karl Albert Brokstad; Trygve Hausken et al. (2018). Altered levels of cytokines in patients with irritable bowel syndrome are not correlated with fatigue. (external link)
• Trine Larsen; Trygve Hausken; Synne Otteraaen Ystad et al. (2018). Does the low FODMAP diet improve symptoms of radiation-induced enteropathy? A pilot study. (external link)
• Tarek Mazzawi; Gülen Arslan Lied; Dag André Sangnes et al. (2018). The kinetics of gut microbial community composition in patients with irritable bowel syndrome following fecal microbiota transplantation. (external link)
• Hanna Fjeldheim Dale; Caroline Jensen; Trygve Hausken et al. (2018). Effect of a cod protein hydrolysate on postprandial glucose metabolism in healthy subjects: A double-blind cross-over trial. (external link)
• Jørgen Valeur; Milada C Småstuen; Torunn Knudsen et al. (2018). Exploring gut microbiota composition as an indicator of clinical response to dietary FODMAP restriction in patients with irritable bowel syndrome. (external link)
• Eline Lundekvam Storlid; Trygve Hausken; Gülen Arslan Lied et al. (2017). Gastric accommodation in healthy subjects studied by ultrasound, manometry, and impedancemetry. (external link)
• Gülen Arslan Lied (2017). Red meat allergy induced by tick bites: A Norwegian case report. (external link)
• Tonje Nesvik Hustoft; Trygve Hausken; Synne Otteraaen Ystad et al. (2017). Effects of varying dietary content of fermentable short-chain carbohydrates on symptoms, fecal microenvironment, and cytokine profiles in patients with irritable bowel syndrome. (external link)
• Ellen Johanne Vara; Cecilie Svanes; Trude Duelien Skorge et al. (2016). Functional gastrointestinal symptoms are associated with higher serum total IgE levels, but less atopic sensitization. (external link)
• Ellen Johanne Vara; Jørgen Valeur; Trygve Hausken et al. (2016). Extra-intestinal symptoms in patients with irritable bowel syndrome: related to high total IgE levels and atopic sensitization?. (external link)
• Gülen Arslan Lied (2014). Indication of immune activation in patients with perceived food hypersensitivity. (external link)
• Gülen Arslan Lied; Odd Helge Gilja; Trygve Hausken (2014). Har silibinin en plass i behandlingen av leversykdommer?. (external link)
• Bodil Bjørndal; Tore Grimstad; Daniel Cacabelos et al. (2013). Tetradecylthioacetic acid attenuates inflammation and has antioxidative potential during experimental colitis in rats. (external link)
• Gülen Arslan Lied; Jian Chen; Håkon Reikvam (2013). Forskningsveiledning - en av de essensielle faktorene på «veien til doktorgrad». (external link)
• Gülen Arslan Lied; Anne Marita Milde; Kim Nylund et al. (2012). Increased wall thickness using ultrasonography is associated with inflammation in an animal model of experimental colitis. (external link)
• Gülen Arsland Lied; Petra Vogelsang; Arnold Berstad et al. (2011). Dendritic cell populations in patients with self-reported food hypersensitivity. (external link)
• Kine Gregersen; Jørgen Valeur; Kristine Lillestøl et al. (2011). Subjective food hypersensitivity: assessment of enterochromaffin cell markers in blood and gut lavage fluid. (external link)
• Ragna Lind; Gülen Arsland Lied; Kristine Lillestøl et al. (2010). Do psychological factors predict symptom severity in patients with subjective food hypersensitivity?. (external link)
• Ragna Lind; Kristine Lillestøl; Jørgen Valeur et al. (2010). Job stress and coping strategies in patients with subjective food hypersensitivity. (external link)
• Gülen Arsland Lied; Kristine Lillestøl; Jørgen Valeur et al. (2010). Intestinal B cell-activating factor: an indicator of non-IgE mediated hypersensitivity reactions to food?. (external link)
• Kine Gregersen; Ragna Lind; Jørgen Valeur et al. (2010). Duodenal administered seal oil for patients with subjective food hypersensitivity: an explorative open pilot study. (external link)
• Kristine Lillestøl; Arnold Berstad; Ragna Lind et al. (2010). Anxiety and depression in patients with self-reported food hypersensitivity. (external link)
• Kristine Lillestøl; Lars Inge Helgeland; Gülen Arsland Lied et al. (2010). Indications of 'atopic bowel' in patients with self-reported food hypersensitivity. (external link)
• Kim Nylund; Svein Ødegaard; Trygve Hausken et al. (2009). Sonography of the small intestine. (external link)
• Siew Ng; Gülen Arsland Lied; Micheal Kamm et al. (2009). Predictive value and clinical significance of myenteric plexitis in Crohn`s disease. (external link)
• Siew Ng; Gülen Arsland Lied; Naila Arebi et al. (2009). Clinical and surgical recurrence of Crohn`s diases after ileocolonic resection in a specialist unit. (external link)
• Kine Gregersen; Ragna Lind; Tormod Bjørkkjær et al. (2008). Effects of seal oil on meal-induced symptoms and gastric accommodation in patients with subjective food hypersensitivity. A pilot study. (external link)
• Ragna Lind; Snorri Olafsson; Ina Hjelland et al. (2008). Lifestyle of patients with self-reported food hypersensitivity differ little from controls. (external link)
• Linn Anne Brunborg; TM Madland; Ragna Lind et al. (2008). Effects of short-term oral administration of dietary marine oils in patients with inflammatory bowel disease and joint pain: A pilot study comparing seal oil and cod liver oil. (external link)
• Gülen Arslan; Kari Erichsen; Anne Marita Milde et al. (2007). No Protection against DSS-induced Colitis by Short-term Pretreatment with Seal or Fish Oils in Rats. (external link)
• Tormod Bjørkkjær; Johan G Brun; Merete Valen et al. (2006). Short-term duodenal seal oil administration normalised n-6 to n-3 fatty acid ratio in rectal mucosa and ameliorated bodily pain in patients with inflammatory bowel disease. (external link)
• Gülen Arslan; Kristine Lillestøl; Arna Mulahasanovic et al. (2006). Food Hypersensitivity Reactions Visualised by Ultrasonography and Magnetic Resonance Imaging in a Patient Lacking Systemic Food-Specific IgE. (external link)
• Gülen Arslan; Ragna Anne Lind; Erik Florvaag et al. (2005). Gastrointestinal matoverfølsomhet hos voksne - nye studier om mulige årsaker. (external link)
• Arnold Berstad; Gülen Arslan; Ragna Anne Lind et al. (2005). Food hypersensitivity-immunologic (peripheral) or cognitive (central) sensitisation?. (external link)
• Gülen Arslan; Odd Helge Gilja; Ragna Anne Lind et al. (2005). Response to intestinal provocation monitored by transabdominal ultrasound in patients with food hypersensitivity. (external link)
• Anne Marita Milde; Gülen Arslan; James Bruce Overmier et al. (2005). An acute stressor enhances sensitivity to a chemical irritant and increases 51-CrEDTA permeability of the colon in adult rats. (external link)
• Gülen Arsland Lied; Ragna Lind; Erik Florvaag et al. (2005). Berstad A. Matoverfølsomhet hos voksne – nye studier om mulige årsaker. (external link)
• Gülen Arsland Lied (2005). Gastrointestinal matoverfølsomhet – et økende problem i befolkningen. (external link)
• Kari Erichsen; Anne Marita Milde; Gülen Arslan et al. (2005). Low-dose oral ferrous fumarate aggravated intestinal inflammation in rats with DSS-induced colitis. (external link)
• Ragna Anne Lind; Gülen Arslan; Hege Randi Eriksen et al. (2005). Subjective health complaints and modern health worries in patients with subjective food hypersensitivity. (external link)
• Gülen Arsland Lied; Gudrun Elise Kahrs; Ragna Lind et al. (2004). Patients with subjective food hypersensitivity: The value of analysing intestinal permeability and inflammation markers in gut lavage fluid. (external link)
• Tormod Bjørkkjær; Linn Anne Brunborg; Gülen Arsland Lied et al. (2004). Reduced joint pain after short-term duodenal administration of seal oil in patients with inflammatory bowel disease: comparison with soy oil. (external link)
• Gülen Arsland Lied; Ragna Lind; Snorri Olafsson et al. (2004). Quality of life in patients with subjective food hypersensitivity: Applicability of the 10-item short form of the Nepean Dyspepsia Index. (external link)
• Anne Marita Milde; Gülen Arslan; Arne Roseth et al. (2003). Intestinal permeability and faecal granulocyte marker protein in dextran sulphate sodium - induced colitis in rats. (external link)
• Gülen Arsland Lied; Svein Ødegaard; Said Elsayed et al. (2002). Food allergy and intolerance: response to intestinal provocation monitored by endosonography. (external link)
• Gülen Arsland Lied; Linn Anne Bjelland Brunborg; Livar Frøyland et al. (2002). Effects of duodenal seal oil administration in patients with inflammatory bowel disease. (external link)
• Gülen Arsland Lied; Tamer Atasever; Mehmet Cindoruk et al. (2001). 51CrEDTA colonic permeability and therapy response in ulcerative colitis. (external link)
• Gülen Arsland Lied; Mehmet Cindoruk; Gul Bahar Ulkar et al. (2001). Serum eosinophilic cationic protein: A marker of eosinophilic infiltration in inflammatory bowel disease?. (external link)
• Arnold Berstad; Gülen Arsland Lied; Geir Folvik (2000). Relationship between intestinal permeability and calprotectin concentration in gut lavage fluid. (external link)
• Gülen Arsland Lied; Mehmet Cindoruk; Tamer Atasever et al. (2000). Assessment of intestinal permeability using 51CrEDTA in inflammatory bowel disease. (external link)

Academic book chapter

• Gülen Arslan Lied; Kristine Lillestøl; Jørgen Valeur (2013). Matintoleranse og allergi i gastrointestinaltraktus. (external link)
• Gülen Arslan Lied (2013). alfa-gal-allergi (kjøttallergi). (external link)

Academic literature review

• Muhammad Umael Khan; Gülen Arslan Lied (2025). Wheat-Related Gastrointestinal Diseases: Narrative Review. (external link)
• Erica Sande Teige; Urd Sortvik; Gülen Arslan Lied (2024). A Systematic Review: Fecal Bacterial Profile in Patients with Irritable Bowel Syndrome Analyzed with the GA-Map Dysbiosis Test Based on the 16S rRNA Gene of Bacterial Species or Groups. (external link)
• Eline Margrete Randulff Hillestad; Aina van der Meeren; Bharath Halandur Nagaraja et al. (2022). Gut bless you: The microbiota-gut-brain axis in irritable bowel syndrome. (external link)
• Christina Osland Johannesen; Hanna Fjeldheim Dale; Caroline Jensen et al. (2020). Effects of plant-based diets on outcomes related to glucose metabolism: A systematic review. (external link)
• Elin Lund Transeth; Hanna Fjeldheim Dale; Gülen Arslan Lied (2020). Comparison of gut microbiota profile in celiac disease, non-celiac gluten sensitivity and irritable bowel syndrome: A systematic review. (external link)
• Elisabeth Tran; Hanna Fjeldheim Dale; Caroline Jensen et al. (2020). Effects of plant-based diets on weight status: A systematic review. (external link)
• Hanna Fjeldheim Dale; Gülen Arslan Lied (2020). Gut microbiota and therapeutic approaches for dysbiosis in irritable bowel syndrome: recent developments and future perspectives. (external link)
• Hanna Fjeldheim Dale; Stella Hellgren Rasmussen; Özgün Ömer Asiller et al. (2019). Probiotics in irritable bowel syndrome: An up-to-date systematic review. (external link)
• Hanna Fjeldheim Dale; Jessica R. Biesiekierski; Gülen Arslan Lied (2018). Non-coeliac gluten sensitivity and the spectrum of gluten-related disorders: an updated overview. (external link)
• Gülen Arslan Lied (2017). An overview of potential pathophysiological mechanisms in food hypersensitivity. (external link)
• Gülen Arslan Lied (2014). Immunsystemets rolle ved selvrapportert matoverfølsomhet. (external link)
• Gülen Arslan Lied (2014). Spekter av gluten-relaterte lidelser. (external link)
• Gülen Arsland Lied; Kristine Lillestøl; Ragna Lind et al. (2011). Perceived food hypersensitivity: A review of 10 years of interdisciplinary research at a reference center. (external link)
• Arnold Berstad; Jørgen Valeur; Kristine Lillestøl et al. (2011). Matoverfølsomhet- Et paradigmeskifte?. (external link)
• Arnold Berstad; Jørgen Valeur; Kristine Lillestøl et al. (2011). Pasienten tåler ikke mat - hva skal vi tro?. (external link)
• Gülen Arsland Lied; Arnold Berstad (2011). Functional and clinical aspects of the B-cell-activating factor (BAFF): a narrative review. (external link)
• Gülen Arsland Lied (2009). Matoverfølsomhet og funksjonelle mage-tarmsykdommer: Hvilke punkter er viktige ved første konsultasjon?. (external link)
• Gülen Arslan (2007). Gastrointestinal food hypersensitivity: Symptoms, diagnosis and provocation tests. (external link)
• Arnold Berstad; Gülen Arsland Lied; Erik Florvaag et al. (1999). Intestinal allergi. (external link)

Case report

• Gudrun Elise Kahrs; Gülen Arslan Lied (2026). Cashewnøttkryssallergi. (external link)

Conference abstract

• Erica Sande Teige; Eline Margrete Randulff Hillestad; Elisabeth Kjelsvik Steinsvik et al. (2022). Bergen Braingut Study: Relations between fecal microbiota profile and its metabolites (short-chain fatty acids) and symptoms in irritable bowel syndrome. (external link)
• Tarek Mazzawi; Gülen Arslan Lied; Johannes Espolin Roksund Hov et al. (2018). Effects of faecal microbiota transplantation on gut microenvironment and symptoms in patients with irritable bowel syndrome. (external link)
• Birgitte Berentsen; Camilla Thuen; Mari Liltvedt Andersen et al. (2018). Interdisciplinary self- help intervention for IBS - eHealth and patient education. (external link)
• Jørgen Valeur; Milada C Småstuen; Torunn Knudsen et al. (2017). Microbial DNA markers associated with response to a low FODMAP diet in patients with irritable bowel syndrome. (external link)
• Tarek Mazzawi; Magdy El-Salhy; Gülen Arslan Lied et al. (2017). Effect of faecal microbiota transplantation on Neurogenin 3, Musahsi 1 and enteroendocrine cells in the duodenum of patients with irritable bowel syndrome. (external link)
• Hanna Fjeldheim Dale; Jan Gunnar Hatlebakk; Nils Hovdenak et al. (2017). The effect of a controlled gluten challenge in patients with suspected non-coeliac gluten sensitivity: A randomized, double-blind placebo-controlled challenge. (external link)
• Trygve Hausken; Tarek Mazzawi; Gülen Arslan Lied et al. (2017). Effect of faecal microbiota transplantation on the symptoms and gut microbiota in patients with irritable bowel syndrome (IBS). (external link)
• Trine Larsen; Trygve Hausken; Synne Otteraaen Ystad et al. (2017). Low FODMAP diet improves symptoms and quality of life in patients with radiation-induced small bowel disease: A pilot study. (external link)
• Jan Gunnar Hatlebakk; Nils Hovdenak; Synne Otteraaen Ystad et al. (2017). Gluten causes symptom relapse in a small group of patients with suspected non-celiac gluten sensitivity: A randomized, double-blind placebo controlled challenge. (external link)
• Tarek Mazzawi; Jørgen Valeur; Trygve Hausken et al. (2017). Effect of faecal microbiota transplantation on gut bacterial fermentation products in patients with irritable bowel syndrome. (external link)
• Trine Larsen; Trygve Hausken; Synne Otteraaen Ystad et al. (2017). Low FODMAP diet improves symptoms and quality of life in patients with radiation-induced small bowel disease: A pilot study. (external link)
• Ellen Johanne Vara; Jørgen Valeur; Trygve Hausken et al. (2016). High levels of serum total IgE-antibodies are not related to intestinal and extra-intestinal symptom severity in irritable bowel syndrome. (external link)
• Tarek Mazzawi; Gülen Arslan Lied; Magdy El-Salhy et al. (2016). Kinetics of microbial community composition in patients with diarrhea-predominant irritable bowel syndrome following faecal microbiota transplantation. (external link)
• Tarek Mazzawi; Gülen Arslan Lied; Magdy El-Salhy et al. (2016). Effect of fecal microbiota transplantation on the symptoms and duodenal enteroendocrine cells in patients with irritable bowel syndrome. (external link)
• Eline Lundekvam Storlid; Trygve Hausken; Gülen Arslan Lied et al. (2016). The Gastric Accomodation Reflex Studied by Ultrasound, Manometry and Impedancemetry in a Pilot Study. (external link)
• Tonje Hustoft; Trygve Hausken; Synne Otteraaen Ystad et al. (2016). Low FODMAP diet alters symptoms, microbiota, short-chain fatty acids and cytokine profiles in patients with IBS: A randomized controlled trial. (external link)
• Gülen Arslan Lied; Ellen Vara; Trude Duelien Skorge et al. (2015). Atopic sensitization and functional gastrointestinal symptoms: Is there any relation?. (external link)
• Ellen Vara; Cecilie Svanes; Trude Duelien Skorge et al. (2014). Are total immunoglobulin E and atopic sensitization associated with food-related gastrointestinal complaints?. (external link)
• Gülen Arsland Lied; Petra Vogelsang; Arnold Berstad et al. (2010). Dendritic cell populations in patients with self-reported food hypersensitivity. (external link)
• Kristine Lillestøl; Jørgen Valeur; Lars Inge Helgeland et al. (2009). Indications of `atopic bowel` in patients with irritable bowel syndrome (IBS). (external link)
• Kristine Lillestøl; Lars Inge Helgeland; Erik Florvaag et al. (2009). Indications of "atopic bowel" in patients with irritable bowel syndrome. (external link)
• Gülen Arsland Lied; Kristine Lillestøl; Jørgen Valeur et al. (2009). Potential role of B-cell activating factor in non-IgE-mediated hypersensitivity reactions to food. (external link)
• Siew Ng; Gülen Arsland Lied; Farah Sandhu et al. (2008). Cross-sectional study on the correlation between pre-operative azathioprine and myenteric plexitis in the proximal resection margins and affected Crohn's disease segment. (external link)
• Kari Erichsen; Gülen Arsland Lied; G Olderøy et al. (2004). Calprotectin in faeces and gut lavage fluid; relationship to intestinal permeability and disease activity in IBD. (external link)
• Gülen Arsland Lied; Tormod Bjørkkjær; Linn Anne Bjelland Brunborg et al. (2003). Seal oil compared to soy oil in patients with inflammatory bowel disease. (external link)
• Ragna Lind; Gülen Arsland Lied; Hege Randi Eriksen et al. (2003). Subjective health complaints and quality of life in patients with self-reported adverse reactions to food. (external link)

Conference lecture

• Gülen Arslan Lied (2024). Rollen til tarmmikrobiotika og hudaksen ved hudsykdommer – Er det en sammenheng mellom hudsykdommer og mage-tarmproblematikk ?. (external link)
• Stein Frostad; Gülen Arslan Lied (2024). Gut microbiota transplantation by gastroscopy in anorexia nervosa. (external link)
• TE Johnsen; Eline Hillestad; Elisabeth Kjelsvik et al. (2023). Redusert eksekutiv funksjon hos pasienter med IBS. (external link)
• Eline Hillestad; Stella Hellgren Rasmussen; Gülen Arslan Lied et al. (2023). The effect of following a 12-week strict low FODMAP diet on clinical biochemistry status, nutritional adequacy and symptom relief in patients with Irritable Bowel Syndrome:The Bergen Brain Gut Study. (external link)
• Gülen Arslan Lied (2022). Brain-Gut-Microbiota Interactions in IBS (Bergen BrainGut study). (external link)
• Gülen Arslan Lied (2022). Irritabel bowel syndrome - interdisciplinary treatment options. (external link)
• Gülen Arslan Lied (2022). Gut Microbiota and Dysbiosis in IBS. (external link)
• Gülen Arslan Lied (2021). Alpha-Gal (kjøttallergi) og gelatin allergi. (external link)
• Gülen Arslan Lied (2021). Therapeutiske veier ved dysbiose. (external link)
• Gülen Arslan Lied (2021). Therapeutic Approaches against Dysbiosis. (external link)
• Gülen Arslan Lied (2021). What is New in the Treatment of Celiac Disease?. (external link)
• Eirik Persson Teige; Eline Margrete Randulff Hillestad; Birgitte Berentsen et al. (2021). Kort- og langtidseffekten av lav FODMAP-dietten på symptomer og kortkjedede fettsyrer hos pasienter med irritabel tarmsyndrom. (external link)
• Erica Persson Teige; Birgitte Berentsen; Ingeborg Brønstad et al. (2020). Short and extended effects of a low FODMAP diet on symptoms and short-chained fatty acids in patients with irritable bowel syndrome. (external link)
• Gülen Arslan Lied (2020). Non-celiac gluten sensitivity and the spectrum of the gluten related disorders. (external link)
• Gülen Arslan Lied (2020). Therapeutic Approaches for Dysbiosis. (external link)
• Erica Teig; Birgitte Berentsen; Trygve Hausken et al. (2020). Kort- og langtidseffekten av lavFODMAP-diett på symptomer og mikrobiota hos pasienter med IBS. (external link)
• Eline M R Hillestad; Gülen Arslan Lied; Elisabeth Kjelsvik Steinsvik et al. (2020). Kvalitetsevaluering av tverrfaglig IBS-poliklinikk. (external link)
• Gülen Arslan Lied (2019). Gut microbiota and therapeutic approaches for dysbiosis: Recent developments and future perspectives. (external link)
• Gülen Arslan Lied (2019). Irritabel bowel syndrome - interdisciplinary treatment options. (external link)
• Gülen Arslan Lied (2019). Gut microbiota and therapeutic approaches for dysbiosis. (external link)
• Gülen Arslan Lied (2019). Non-coeliac gluten sensitivity and the spectrum of gluten-related disorders. (external link)
• Gülen Arslan Lied (2019). Matallergi og intoleranser. (external link)
• Birgitte Berentsen; Camilla Kristianslund; Gülen Arslan Lied et al. (2019). Mage-tarmskolen – tverrfaglig internetbehandling ved Irritabel tarmsyndrom. (external link)
• Gülen Arslan Lied (2019). Non-Coeliac Gluten Sensitivity And The Spectrum Of Gluten-Related Disorders: An Updated Overview. (external link)
• Tarek Mazzawi; Trygve Hausken; Johannes Espolin Roksund Hov et al. (2019). Effect of faecal microbiota transplantation on gut microenvironment and symptoms in patients with irritable bowel syndrome. (external link)
• Gülen Arslan Lied (2018). Is non-celiac gluten sensitivity out?. (external link)
• Gülen Arslan Lied (2018). Fecal Microbiota transplantation. (external link)
• Gülen Arslan Lied (2018). Microbiota 2018. (external link)
• Gülen Arslan Lied (2017). An Overview of Gluten-Related Disorders. (external link)
• Gülen Arslan Lied (2017). An overview of potential pathophysiological mechanisms in food hypersensitivity. (external link)
• Jørgen Valeur; Milada C Småstuen; Torunn Knudsen et al. (2017). Microbial DNA markers associated with response to a low FODMAP diet in patients with irritable bowel syndrome. (external link)
• Tonje Hustoft; Trygve Hausken; Synne Otteraaen Ystad et al. (2016). Low FODMAP diet alters symptoms, microbiota, short-chain fatty acids and cytokine profiles in patients with IBS: A randomized controlled trial. (external link)
• Gülen Arslan Lied (2016). Digestive Health - the role of protein nutrition on gut microbiota and the pathogenesis of gastrointestinal disorders?. (external link)
• Tonje Hustoft; Trygve Hausken; Synne Otteraaen Ystad et al. (2016). Low FODMAP diet alters symptoms, microbiota, short-chain fatty acids and cytokine profiles in patients with IBS: A randomized controlled trial. (external link)
• Lina Mari Torheim Hanitz; Ellen Vara; Trygve Hausken et al. (2015). Intestinal permeabilitet hos friske personer etter inntak av NSAIDs: en pilotstudie. (external link)
• Gülen Arslan Lied (2013). Veien til doktorgraden: Forskningsveiledning. (external link)
• Gülen Arsland Lied (2012). Matoverfølsomhet. (external link)
• Tore Grimstad; Kim Nylund; Gülen Arsland Lied et al. (2011). Ultrasonographic evaluation of DSS-induced colitis in rats after dietary intake of a modified thia fatty acid. (external link)
• Gülen Arsland Lied (2010). Potential Role of B Cell-Activating Factor (BAFF) in Non-IgE-mediated Hypersensitivity Reactions to Food. (external link)
• Kristine Lillestøl; Jørgen Valeur; Lars Inge Helgeland et al. (2009). Indications of `atopic bowel` in patients with irritable bowel syndrome (IBS). (external link)
• Gülen Arsland Lied (2009). Potential Role of B Cell-Activating Factor (BAFF) in Non-IgE-mediated Hypersensitivity Reactions to Food. (external link)
• Gülen Arsland Lied (2006). Intestinal Food Hypersensitivity. (external link)
• Tormod Bjørkkjær; Linn Anne Bjelland Brunborg; Gülen Arslan et al. (2005). Effekt av selolje vs soyaolje på leddsmerter ved inflammatorisk tarmsykdom. (external link)
• Arnold Berstad; Gülen Arsland Lied; Geir Folvik et al. (1998). Correlation between intestinal permeability and luminal calprotectin concentration. (external link)

Conference poster

• Caroline Jensen; Tilde Kristine Martinsen; Jørgen Valeur et al. (2024). Gastrointestinal symptoms and associations with faecal SCFAs and dietary intake in older adults - results from the Hordaland Health Studie 3. (external link)
• Aina van der Meeren; Silke Appel; Gülen Arslan Lied et al. (2024). Mapping of the duodenal mucosal microenvironment in iriitabel bowel syndrome with imaging mass cytometry. (external link)
• Caroline Jensen; Gunnar Mellgren; Simon N Dankel et al. (2024). Quality and quantity of carbohydrates, fecal SCFAs and gastrointestinal symptoms - results from a RCT (CARBFUNC). (external link)
• Julie Eirin Billing; Birgitte Berentsen Jacobsen; Arvid Lundervold et al. (2023). Cognitive function in patients with irritable bowel syndrome: impairment is common and only weakly correlated with depression/anxiety and severity of gastrointestinal symptoms. (external link)
• Eline Hillestad; Erica Teig; Elisabeth Kjelsvik Steinsvik et al. (2023). Nutritional adequacy and biochemical status after a 12-week strict low FODMAP diet in patients with irritable bowel syndrome. (external link)
• Aina van der Meeren; Silke Appel; Gülen Arslan Lied et al. (2023). Diagnostic gut biomarkers with imaging mass cytometry in irritable bowel syndrome. (external link)
• Erica Teig; Eline Hillestad; Ingeborg Brønstad et al. (2023). Bergen BrainGut study: Assessment of Gut Integrity Markers and Tight Junction Proteins and their Changes Following a 12-week Strict Low FODMAP Diet in Patients with Irritable Bowel Syndrome. (external link)
• Erica Teig; Eline Hillestad; Ingeborg Bronstad et al. (2023). Bergen Braingut Study: Changes in Functional Bacterial Profile and Dysbiosis in Patients with IBS Following a Strict 12-Week Low Fodmap Diet. (external link)
• Erica Teig; Eline Hillestad; Ingeborg Brønstad et al. (2023). BERGEN BRAINGUT STUDY: CHANGES IN GUT INTEGRITY MARKERS AND TIGHT JUNCTION PROTEINS IN PATIENTS WITH IRRITABLE BOWEL SYNDROME FOLLOWING A 12-WEEK STRICT LOW FODMAP DIET. (external link)
• Aina Van Der Meeren; Silke Appel; Gülen Arslan Lied et al. (2023). Bergen BrainGut study: diagnostic gut biomarkers in irritable bowel syndrome with imaging mass cytometry. (external link)
• Eline Margrethe Randulff Hillestad; Erica Sande Teige; Elisabeth Kjelsvik Steinsvik et al. (2023). Nutritional adequacy and biochemical status after a 12-week strict low FODMAP diet in patients with irritable bowel syndrome. (external link)
• Erica Sande Teige; EM Hillestad; Elisabeth Kjelsvik Steinsvik et al. (2022). Bergen Braingut Study: Relations between fecal microbiota profile and its metabolites (short-chain fatty acids) and symptoms in irritable bowel syndrome. (external link)
• Benuarda Toto; Maria O`Keefe; Øyvind Barkhald et al. (2020). Effects of orally ingested microplastics in rats as a model organism: preliminary results. (external link)
• Birgitte Berentsen; HN Bharath; Astrid Lundervold et al. (2019). Brain-Gut-Microbiota Interaction in Irritable Bowel Syndrome: A Multidimensional Approach. (external link)
• Karin Pittman; Bodil Bjørndal; Gülen Arslan Lied (2019). Quantified Mucosal Gut Health: hiding in plain sight. (external link)
• Eline Hillestad; Gülen Arslan Lied; Elisabeth Kjelsvik Steinsvik et al. (2019). Evaluation of a tertiary, multidisciplinary outpatient clinic for irritable bowel syndrome. (external link)
• Eline Margrete Randulff Hillestad; Birgitte Berentsen; Gülen Arslan Lied (2019). Evaluation of a tertiary, multidisciplinary outpatient clinic for irritable bowel syndrome. (external link)
• Tarek Mazzawi; Gülen Arslan Lied; Johannes Espolin Roksund Hov et al. (2018). Effects of faecal microbiota transplantation on gut microenvironment and symptoms in patients with irritable bowel syndrome. (external link)
• Caroline Jensen; Hanna Fjeldheim Dale; Trygve Hausken et al. (2018). The effect of a cod protein hydrolysate on postprandial glucose metabolism in healthy subjects. (external link)
• Tarek Mazzawi; Gülen Arslan Lied; Johannes Espolin Roksund Hov et al. (2018). Correlations between gut microenvironment and symptoms in patients with diarrhea-predominant irritable bowel syndrome. (external link)
• Tarek Mazzawi; Magdy El-Salhy; Gülen Arslan Lied et al. (2017). Effect of faecal microbiota transplantation on Neurogenin 3, Musahsi 1 and enteroendocrine cells in the duodenum of patients with irritable bowel syndrome. (external link)
• Tarek Mazzawi; Jørgen Valeur; Trygve Hausken et al. (2017). Effect of faecal microbiota transplantation on gut bacterial fermentation products in patients with irritable bowel syndrome. (external link)
• Hanna Fjeldheim Dale; Jan Gunnar Hatlebakk; Nils Hovdenak et al. (2017). The effect of a controlled gluten challenge in patients with suspected non-coeliac gluten sensitivity: A randomized, double-blind placebo-controlled challenge. (external link)
• Trine Larsen; Trygve Hausken; Synne Otteraaen Ystad et al. (2017). Low FODMAP diet improves symptoms and quality of life in patients with radiation-induced small bowel disease: A pilot study. (external link)
• Tonje Hustoft; Trygve Hausken; Synne Otteraaen Ystad et al. (2016). Low versus high FODMAP diet in patients with irritable bowel syndrome. (external link)
• Tonje Hustoft; Trygve Hausken; Synne Otteraaen Ystad et al. (2016). Low FODMAP diet alters symptoms, microbiota, short-chain fatty acids and cytokine profiles in patients with IBS: A randomized controlled trial. (external link)
• Tonje Hustoft; Trygve Hausken; Synne Otteraaen Ystad et al. (2016). Low FODMAP diet – just placebo? Low versus high FODMAP diet in patients with irritable bowel syndrome. (external link)
• Gülen Arslan Lied; Jian Chen; Håkon Reikvam (2014). The Role of Research Supervision on Doctoral Degree. (external link)
• Kirsi Kaarina Vaali; Benedicte Jarhn; Gülen Arsland Lied et al. (2012). Intestinal cleansing and vegan diet as a novel modality for treatment of irritable bowel syndrome (IBS). (external link)
• Ragna Lind; Gülen Arsland Lied; Kristine Lillestøl et al. (2010). Do psychological factors explain symptom severity in patients with subjective food hypersensitivity?. (external link)
• Gülen Arsland Lied; Kristine Lillestøl; Jørgen Valeur et al. (2010). Potential role of B-cell activating factor (BAFF) in non-IgE-mediated hypersensitivity reactions to food. (external link)
• Gülen Arsland Lied; Kristine Lillestøl; Jørgen Valeur et al. (2009). Potential role of B-cell activating factor in non-IgE-mediated hypersensitivity reactions to food. (external link)
• Kristine Lillestøl; Lars Inge Helgeland; Erik Florvaag et al. (2009). Indications of "atopic bowel" in patients with irritable bowel syndrome. (external link)

Doctoral thesis (PhD)

• Benuarda Toto; Jutta Dierkes; Gülen Arslan Lied et al. (2024). Microplastic toxicity: An investigation of micro- and nanoplastics and their effects on aquatic life and intestine function/permeability in rats. (external link)
• Caroline Jensen; Dag Arne Lihaug Hoff; Gülen Arslan Lied et al. (2021). Supplementation with cod protein hydrolysate : Intervention studies in healthy adults and adults with metabolic syndrome. (external link)
• Hanna Fjeldheim Dale; Gülen Arslan Lied; Jan Gunnar Hatlebakk et al. (2020). Health effects of supplementation with cod protein hydrolysate: Impact on glucose metabolism and appetite in healthy subjects and gut health in irritable bowel syndrome. (external link)
• Kine Gregersen; Gülen Arslan Lied; Jørgen Valeur et al. (2013). Subjective food hypersensitivity: Studies on enterochromaffin cell secretion products and effects of seal oil therapy. (external link)
• Kristine Lillestøl; Arnold Berstad; Gülen Arsland Lied (2010). Self-reported food hypersensitivity with gastrointestinal symptoms. Allergological and psychological factors. (external link)
• Ragna Lind; Arnold Berstad; Gülen Arsland Lied (2010). Subjective food hypersensitivity: Lifestyle and psychological factors. (external link)

Journal corrigendum

• Hanna Fjeldheim Dale; Caroline Jensen; Trygve Hausken et al. (2019). Effect of a cod protein hydrolysate on postprandial glucose metabolism in healthy subjects: A double-blind cross-over trial - CORRIGENDUM. (external link)

Journal review

• Jørgen Valeur; Trygve Hausken; Jan Gunnar Hatlebakk et al. (2021). Minneord: Arnold Berstad (1940-2020). (external link)

Lecture

• Gülen Arslan Lied (2025). Tarmmikrobiotika og hudaksen:Er det en sammenheng mellom hud- og mage-tarmsykdommer?. (external link)
• Gülen Arslan Lied (2024). Matoverfolsømhet og gluten-relaterte lidelser. (external link)
• Gülen Arslan Lied (2019). Gluten intolerance, food allergy and irritable bowel syndrome. (external link)
• Gülen Arslan Lied (2018). Food hypersensitivity in adults. (external link)
• Gülen Arslan Lied (2018). IgE- and non-IgE-mediated enteropathies in adults. (external link)
• Gülen Arslan Lied (2017). Allergic, IgE /non-IgE enteropathies in adults. (external link)
• Gülen Arslan Lied (2017). Cøliaki og non-cøliakisk gluten intoleranse. (external link)
• Gülen Arslan Lied (2017). Kasuistikk. Matvareallergi og matvareintoleranse. (external link)
• Gülen Arslan Lied (2016). Selvrapportert matoverfølsomhet. (external link)
• Gülen Arslan Lied (2016). Matallergi/intoleranse hos voksne. (external link)
• Tarek Mazzawi; Gülen Arslan Lied; Magdy El-Salhy et al. (2016). Kinetics of microbial community composition in patients with diarrhea-predominant irritable bowel syndrome following faecal microbiota transplantation. (external link)
• Gülen Arslan Lied (2015). Allergic, IgE /non-IgE enteropathies. (external link)
• Gülen Arslan Lied (2015). Kasuistikk. Matvareallergi og matvareintoleranse. (external link)
• Gülen Arslan Lied (2015). The relation between supervisor and candidate. (external link)
• Gülen Arslan Lied (2015). Food hypersensitivity in adults. (external link)
• Gülen Arslan Lied (2015). Food intolerance and gastrointestinal complaints. (external link)
• Gülen Arslan Lied (2014). Subjektiv matoverfølsomhet. (external link)
• Gülen Arslan Lied (2014). The relation between candidate and supervisor. (external link)
• Gülen Arslan Lied (2014). Allergiske, IgE-/non-IgE-enteropatier: Voksne. (external link)
• Gülen Arslan Lied (2013). Matoverfølsomhet hos voksne. (external link)
• Gülen Arsland Lied; Anne Marita Milde; Kim Nylund et al. (2011). A comparison between DSS- and TNBS induced colitis in rats on ultrasonographic intestinal changes: a pilot study. (external link)

Letter to the editor

• Arnold Berstad; Mette Helvik Morken; Gülen Arsland Lied et al. (2012). Fecal fat excretion in irritable bowel syndrome. (external link)

Master’s thesis

• Erica Sande Teige; Urd Sortvik; Gülen Arslan Lied (2024). Fecal Bacterial Profile in Patients with Irritable Bowel Syndrome Analyzed with the GA-Map Dysbiosis Test Based on the 16S rRNA Gene of Bacterial Species or Groups. (external link)
• Erica Sande Teige; Gülen Arslan Lied (2024). Fecal bacteria and short-chain fatty acids in patients with irritable bowel syndrome: relations to subtype. (external link)
• Tilde Kristine Martinsen; Caroline Jensen; Gülen Arslan Lied (2022). The Prevalence of Gastrointestinal Symptoms and Associated Factors among Community-Dwelling Older Persons - A Cross Sectional Study. (external link)
• Stella Hellgren Rasmussen; Birgitte Berentsen; Gülen Arslan Lied (2021). 12 weeks strict low FODMAP dietary effect on clinical biochemistry status and symptom relief in patients with Irritable Bowel Syndrome. (external link)
• Espen Hindar Tvedt; Jutta Dierkes; Gülen Arslan Lied (2020). A randomized, controlled, crossover trial investigating the effects of bread containing guar galactomannan on glucose response in healthy overweight adults. (external link)
• Elisabeth Tran; Gülen Arslan Lied; Hanna Fjeldheim Dale (2020). Effekter av et plantebasert kosthold på kroppsvekt og kroppsmasse. (external link)
• Julianne Johannessen; Gülen Arslan Lied; Hanna Fjeldheim Dale et al. (2020). Investigation of potential biomarkers for non-coeliac gluten sensitivity: Markers of gut integrity and inflammation compared with healthy controls and patients with irritable bowel syndrome. (external link)
• Eline Hillestad; Birgitte Berentsen; Gülen Arslan Lied (2019). Evaluation of a tertiary, multidisciplinary outpatient clinic for irritable bowel syndrome. (external link)
• Stella Hellgren Rasmussen; Gülen Arslan Lied; Hanna Fjeldheim Dale (2019). Effect of probiotic supplementation on symptoms in Irritable Bowel Syndrome: A systematic review. (external link)
• Kristine Høva Bøhler; Trygve Hausken; Gülen Arslan Lied (2019). Effects of oral protein load on energy intake throughout the day, appetite and gastric emptying in healthy older and younger men. (external link)
• Elin Lund Transeth; Gülen Arslan Lied; Hanna Fjeldheim Dale (2019). A comparison of gut microbiota profile in patients with celiac disease, non-celiac gluten sensitivity and irritable bowel syndrome. (external link)
• Iselin Schjelle Holen; Trygve Hausken; Gülen Arslan Lied (2019). Effects of a guar and whey containing preload on gastric emptying and the glycaemic and blood pressure responses to oral glucose in healthy older subjects. (external link)
• Inghild Storaas; Gülen Arslan Lied; Simon N Dankel (2019). Effects of carbohydrate quality and quantity on fecal short-chain fatty acids and symptoms of gastrointestinal health in people with obesity: a randomized controlled trial (CARBFUNC). (external link)
• Marie Elise Opheim Storlien; Trygve Hausken; Gülen Arslan Lied et al. (2019). The effect of marine protein hydrolysates on biomarkers related to muscle synthesis and degradation following exhaustive endurance cycling in healthy males. (external link)
• Malin Rofstad Berg; Gülen Arslan Lied; Simon N Dankel et al. (2019). The relationship between quality and quantity of dietary carbohydrates, SCFAs and gastrointestinal health in obesity – A randomized control dietary intervention (CARBFUNC). (external link)
• Trygve Hausken; Gülen Arslan Lied; Randi Julie Tangvik et al. (2018). Effect of marine peptide hydrolysate supplementation on ghrelin and insulin-like peptide 5 secretion on appetite related conditions – As tested in recovery following endurance cycling. (external link)
• Bysheim Olivia; Gülen Arslan Lied (2018). Randomised double-blind placebo-controlled trials in patients with suspected Non-Celiac Gluten Sensitivity – a literature review. (external link)
• Trine Larsen; Gülen Arslan Lied; Trygve Hausken (2017). The effect of low FODMAP diet in patients with radiation-induced small bowel disease. (external link)
• Hanna Fjeldheim Dale; Gülen Arslan Lied (2017). The effect of a controlled gluten challenge in patients with suspected Non-Coeliac Gluten Sensitivity: A randomized, double-blind placebo-controlled challenge. (external link)
• Tonje Hustoft; Gülen Arslan Lied; Trygve Hausken (2016). Low versus high fodmap diet in patients with irritable bowel syndrome. (external link)
• Vara Ellen Johanne; Gülen Arslan Lied; Cecilie Svanes (2014). Is total immunoglobulin E and atopic sensitization associated with food-related gastrointestinal complaints?. (external link)
• Lina Mari Torheim Hanitz; Trygve Hausken; Oddrun Anita Gudbrandsen et al. (2014). Intestinal permeability in healthy humans receiving NSAID: A pilot study. (external link)
• Benedicte Jahrn; Kirsi Kaarina Vaali; Trygve Hausken et al. (2012). Intestinal cleasing and vegan diet as a novel modality for treatment of irritable bowel syndrome (IBS). (external link)
• Ragna Anne Lind; Arnold Berstad; Gülen Arslan Lied (2006). Lifestyle in patients with subjective food hypersensitivity. (external link)
• Kine Gregersen; Livar Frøyland; Gülen Arslan Lied et al. (2005). Acute effects of duodenal seal oil or soy oil administration on gastric accommodation and symptoms in patients with food hypersensitivity. (external link)

Media feature article

• Gülen Arslan Lied (2021). Cøliaki er en sykdom, det er ikke en trend. (external link)

Media interview

• Ingrid Spilde; Marianne Molin; Marit Kolby et al. (2026). Norsk studie testet det motsatte av det vanlige rådet mot irritabel tarm. (external link)
• Gülen Arslan Lied; Anders Ihle Tovan (2025). Nye funn om ulcerøs kolitt og Crohns sykdom: Dette kan hjelpe mot plagene. (external link)
• Gülen Arslan Lied; Dunia Zeinalzadeh (2025). Studie: Advarsel til alle med IBS. (external link)
• Gülen Arslan Lied; Mariann Reikerås; Tony Ågotnes (2024). Gluten, cøliaki og gluten relaterte tilstander. (external link)
• Gülen Arslan Lied; Ingrid Spilde (2022). De som var lenge syke etter covid-19, hadde ofte forstyrrelser i tarm­bakteriene. (external link)
• Gülen Arslan Lied (2022). People who remained sick long after their COVID-19 infection often had alterations in their intestinal bacteria. (external link)
• Gülen Arslan Lied; Marianne Nordahl (2021). Matallergier har økt dramatisk. Nå kommer forskere med en ny teori om hvorfor. (external link)
• Gülen Arslan Lied; Marit Zinöcker; Sissi Stove Lorenzen et al. (2021). Et kaos av dietter - Hva er den beste dietten for oss med fordøyelsesssykdommer?. (external link)
• Gülen Arslan Lied; Ingrid Rise Fry (2020). Forskningsprisvinner er ledende på matallergi og intoleranser. (external link)
• Gülen Arslan Lied; Thomas Martin Abrahamsen (2020). Kronprins Haakons forskningspris til Haukelandforsker. (external link)
• Gülen Arslan Lied; Amalie Nord Hagen (2020). Eksperter kaller matintoleranse­tester for svindel. Ina (26) fikk påvist intoleranse hun ikke hadde. (external link)
• Gülen Arslan Lied; Ingrid Hagerup (2020). Astma- og allergipris til Gülen Arslan Lied. (external link)
• Gülen Arslan Lied (2019). Matvareoverfølsomhet og -allergi. (external link)
• Gülen Arslan Lied; Ingrid Hagerup (2019). IBS-pasienter ble bedre i magen etter bæsj-transplantasjon. (external link)
• Hanna Fjeldheim Dale; Gülen Arslan Lied (2019). Probiotika kan hjelpe på magetrøbbel. (external link)
• Hanna Fjeldheim Dale; Stella Hellgren Rasmussen; Gülen Arslan Lied (2019). Probiotika kan hjelpe på magetrøbbel. (external link)
• Hanna Fjeldheim Dale; Gülen Arslan Lied (2018). Nina Kristiansen utelater et viktig budskap om vår forskning på glutensensitivitet. (external link)
• Gülen Arslan Lied; Hanna Fjeldheim Dale; Ingrid Hagerup (2018). Mente selv at de ikke tålte gluten, men ble ikke verre av å spise gluten. (external link)
• Hanna Fjeldheim Dale; Gülen Arslan Lied (2018). Glutenstøtten kan bli kraftig redusert. (external link)
• Tonje Hustoft; Gülen Arslan Lied (2016). Studerte placebo-effekten ved kosthold. (external link)
• Bjørnstad Malini Gaare; Gülen Arslan Lied (2015). Slik får du fart på magen. (external link)
• Askvik Kristine; Aud K Herland Berstad; Gülen Arslan Lied et al. (2014). Spesialistfront mot allergi. (external link)
• Randi Holmås; Gülen Arslan Lied (2014). Karrierevegar sentralt på Orpheus-konferansen 2014. (external link)
• Gülen Arsland Lied (2012). Matallergi. Diagnostisk manuel for voksne (DM voksen). (external link)

Popular science article

• Eline Margrete Randulff Hillestad; Birgitte Berentsen; Gülen Arslan Lied (2021). Brain-Gut-Microbiota Interaction in Irritable Bowel Syndrome: A Multidimensional Approach. (external link)
• Gülen Arslan Lied (2020). Kronprins Haakons forskningspris til Gülen Arslan Lied. (external link)
• Trine Larsen; Trygve Hausken; Gülen Arslan Lied (2018). Lav FODMAP-diett for pasienter med stråleskadet tarm. (external link)
• Hanna Fjeldheim Dale; Gülen Arslan Lied (2017). Ikke-cøliakisk gluten sensitivitet. (external link)

Professional article

• Gülen Arslan Lied; Simon N Dankel; Oddrun Anita Gudbrandsen (2017). Nutrition, health and chronic diseases. (external link)
• Gülen Arslan Lied; Hansen Grete (2015). Matoverfølsomhet - den nye folkesykdommen?. (external link)
• Gülen Arslan Lied (2015). An overview of spectrum of gluten-related disorders. (external link)

Radio or TV participation

• Gülen Arslan Lied; Hege Holm (2021). Matallergi blir stadig vanligere. (external link)

See a complete overview of publications in NVA.