Photo of Åshild Olsen Faresjö

Åshild Olsen Faresjö

Senior Associate Professor

My research is multidisciplinary, including stress, psychosocial conditions and disease risk in different groups, such as children, adults and older people. My research also focuses on social stress, environment and genetic disposition and IBS.

Can stress be measured and what is Irritable Bowel Syndrome - IBS?

My research is multidisciplinary, including biological stress, self perceived stress, psychosocial conditions and disease risk in different groups of people, such as children, adults and older people. My research also focuses on the study of social stress, environment and genetic disposition and Irritable Bowel Syndrome (IBS).

During the past 10 years I have actively participated in different international research projects. I am participating in an international European research collaboration within the framework of the EU Fp7 programme. These two projects are OTC-SOCIOMED directed from the University of Crete in Greece and a project entitled QUALICOPC directed from the Research Institute NIVEL in Holland. Since 2012 I have also worked as a co-ordinator and liaison in an international research collaboration regarding inequalities of child health entitled EPOCH directed from the McGill University in Montreal, Canada and including Stanford University, USA, York University UK, Erasmus University, Rotterdam Holland as part of the INRICH collaboration (see;

TWIBS (Twincities IBS Study)

I continued to study the disease IBS in cooperation with the new research contacts I made during the work with my thesis. For this purpose, I began to build up my own research group called TWIBS (Twin Cities IBS Study) in the Twin Cities Research Group which is an interdisciplinary research group. I am the project leader for TWIBS group, which also includes gastroenterologists, statisticians, physiotherapists and a geneticist. TWIBS is a comprehensive data set with IBS patients and controls collected from health centres in the county of Östergötland.


I have participated in the research network EPOCH, which includes researchers from the University of Montreal Canada, Stanford University, USA, York University, UK, Erasmus University Netherlands and our research group for the ABIS-study. I am responsible (liaison) for the Swedish participation in this international collaboration.


I am a member of the research group for the ABIS-study, which is headed by Emeritus Professor Johnny Ludvigsson. ABIS is a prospective study of 17,000 children followed from birth with recurrent questionnaires and biological sampling (the single largest biobank in the US consists of biomaterials from ABIS). For two years, I have been responsible for the extensive dataset collected over 15 years. Through the ABIS study I became involved in other international collaborations apart from EPOCH with Sir Michael Marmot and his institution UCL Institute of Health Equity and Research in London, which recently resulted in an article where I was responsible for the Swedish contribution.

Epigenetics – stress

I am involved in a recently established interdisciplinary research group in the new field of epigenetics, where collaboration takes place across faculties. The idea is that together we will start different studies of how early exposure to stress can affect disease risk between generations. Studies will be done in humans, but also laboratory mice, chickens and dogs. The new method of measuring stress through cortisol in hair will be applied together with genetic testing.



Jenny Koppner, Ann Lindelöf, Fredrik Iredahl, Maxine Tevell, Staffan Nilsson, Annika Thorsell, Åshild Olsen Faresjö, Hanna Israelsson Larsen (2024) Factors affecting self-perceived mental health in the general older population during the COVID-19 pandemic: a cross-sectional study BMC Public Health, Vol. 24, Article 660 Continue to DOI
Johnny Ludvigsson, Åshild Olsen Faresjö (2024) The importance of factors early in life for development of eating disorders in young people, with some focus on type 1 diabetes Eating and Weight Disorders, Vol. 29, Article 5 Continue to DOI
Jenny Sjödahl, Anna Ingemansson, Tetyana Bureychak, Anna-Karin Norlin, Michael P. Jones, Åshild Olsen Faresjö, Susanna Walter (2024) Defecation symptoms in primary health care patients with irritable bowel syndrome Scandinavian Journal of Gastroenterology, Vol. 59, p. 16-24 Continue to DOI


Andrea Lebena, Åshild Olsen Faresjö, Tomas Faresjö, Johnny Ludvigsson (2023) Clinical implications of ADHD, ASD, and their co-occurrence in early adulthood-the prospective ABIS-study BMC Psychiatry, Vol. 23, Article 851 Continue to DOI
Åshild Olsen Faresjö, Anh LeTran, Ole J. Olsen, Tomas Faresjö, Elvar Theodorsson, Michael Jones (2023) Measuring cortisol concentration in hair month-by-month two years retrospectively ALL LIFE, Vol. 16, Article 2172461 Continue to DOI

Research Project




Irritable bowel syndrome diagnosed in primary care-occurrence, treatment and impact on everyday life”.
I defended my PhD thesis in October 2006 in an area of research that applies occurrence, treatment and impact on quality of life to IBS (Irritable Bowel Syndrome) diagnosed in primary care. The thesis was based on a larger data set collectively termed LIPS (Linköping IBS Population Study). After completing my  PhD, I have built extensive international research networks in several subprojects. The main research track that I have developed after my thesis applies the new method to measure cortisol in hair and all the possible fields of application in various research projects that this method leads to.

Länk till DiVA
Bio Medical Central


  • 1993 University certificate in Biomedical Laboratory Science. 
    Histopathology and Cell biology at Linköping University, October 1993.
  • 1997 Bachelor of Science in Biomedical Laboratory Science at Linköping University. 
  • 1997 Minor thesis at the Institution of Occupational Medicine at Linköping University 
    ”Determination of DNA-strand breaks in cultured lung epithelial cell and leukocytes with micro-filter technique.”
  • 1998 Master of Science in Biomedical Laboratory Science at Linköping university. 
    Minor thesis at the Institution of Paediatrics, Linköpings University: ”Evaluating of different methods measuring cytokine production by antigen stimulated PBMC's from IDDM children.”
  • 2006 Doctor of Philosophy (PhD-degree) in the subject area of Social Medicine and Public Health Science
    Title of PhD Thesis: “Irritable bowel syndrome diagnosed in primary care-occurrence, treatment and impact on everyday life”.
  • 2015 Associate professor in Biomedicine and Public Health, Linköping university.

Research Group


Field of Teaching

  • The Medical Programme
  • Biomedical Laboratory Science
  • Health, Ethics, Learning

Other assignments

Main and co-supervisor for PhD-students at Linköping University