A platform for collaborations in respiratory research in Sweden
Anchor: intro


The IDEFICS/I.Family youth cohort (IFYC) is a longitudinal study of children from 9 European countries including Sweden, with focus on determinants of healthy body weight. The Swedish sub-cohort was recruited in 2007 at ages 2-9 and has been followed until 2021.

Anchor: Main sub-projects

Main sub-projects

• Short-term effects of a community-based health-promotion intervention
• Trajectories of weight and height from birth to early adulthood
• Dietary determinants of unhealthy weight trajectories
• Objective and subjective measures of physical activity
• Other risk factors: sleep hygiene, mental well-being, socioeconomic vulnerabilities
• Asthma and allergies investigated via parental report, and later by self-report by teens.
• Metabolic syndrome score calculated at 3 time points, based on physical examinations and biomarkers
• Pre-post covid survey conducted in Sweden and Germany

Anchor: Investigators and study personnel

Investigators and study personnel

• Lauren Lissner, Professor; Institute of Medicine, School of Public Health and Community Medicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden

• Monica Hunsberger, docent; Institute of Medicine, School of Public Health and Community Medicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden

• Staffan Mårild, MD, PhD; Department of Paediatrics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;

Anchor: Responsible university or institution

Responsible university or institution

The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

Anchor: Collaborators


The total European IDEFICS-I-family consortium (Sweden + survey centers in 8 other European countries).

Anchor: Funders


• Formerly EU funding FP6 and FP7, and EpiLife Center University of Gothenburg
• Currently, ALF funding for Swedish center

Anchor: How to collaborate with IDEFICS/I.Family

How to collaborate with IDEFICS/I.Family

We welcome potential collaborators to any of our sub-projects. Please contact the project lead (PI) for the sub-project you are interested in or write to any of the contact persons below.

Anchor: contacts


Lauren Lissner: lauren.lissner@gu.se

Monica Hunsberger: monica.hunsberger@gu.se

Staffan Mårild: staffan.marild@gu.se

Anchor: publications

Key publications

Ahrens W, Piegeot I, Phlabeln H, De Henauw S, Lissner L, Molnár D, Moreno LA, Tornatiris M, Veidebaum T, Siani A; IDEFICS consortium. Prevalence of overweight and obesity in European children below the age of 10. Int J Obes (Lond). 2014 Sep;38 Suppl 2:S99-107. doi: 10.1038/ijo.2014.140.

Ahrens W, Moreno LA, Mårild S, Molnár D, Siani A, De Henauw S, Böhmann J, Günther K, Hadjigeorgiou C, Iacoviello L, Lissner L, Veidebaum T, Pohlabeln H, Pigeot I. Metabolic syndrome in young children: definitions and results of the IDEFICS study. Int J Obes (Lond). 2014 Sep;38 Suppl 2:S4-14. doi: 10.1038/ijo.2014.130.

Olafsdottir S, Eiben G, Prell H, Hense S, Lissner L, Mårild S, Reisch L, Berg C. Young children’s screen habits are associated with consumption of sweetened beverages independently of parental norms. Int J Public Health. 2014 Feb;59(1):67-75. doi: 10.1007/s00038-013-0473-2. Epub 2013 Apr 27.

De Henauw S, Huybrechts I, De Bourdeaudhuij I, Bammann K, Barba G, Lissner L, Mårild S, Molnar D, Moreno L, Pigeot I, Tornaritis M, Veidebaum T, Verbestel V, Ahrens W, IDEFICS consortium. Effects of a community-oriented obesity prevention programme on indicators of body fatness in preschool and primary school children. Main results from the IDEFICS study. Obesity reviews 2015 Dec;16 Suppl 2:16-29. doi: 10.1111/obr.12346.

Lissner L, De Bourdeaudhuij I, Konstabel K, Mårild S, Mehlig K, Molnár D, Moreno LA, Pigeot I, Siani A, Tornaritis M, Williams G; IDEFICS consortium. Differential outcome of the IDEFICS intervention in overweight versus non-overweight children: did we achieve ‘primary’ or ‘secondary’ prevention? Obes Rev. 2015 Dec;16 Suppl 2:119-26. doi: 10.1111/obr.12326.

Ahrens W, Siani A, Adan R, De Henauw S, Eiben G, Gwozdz W, Hebestreit A, Hunsberger M, Kaprio J, Krogh V, Lissner L, Molnar D, Moreno LA, Page A, Picó C, Reisch LA, Smith RM, Tornaritis M, Veidebaum T, Williams G, Pohlabeln H, Pigeot I, on behalf of the I.Family consortium. Cohort profile: The transition from childhood to adolescence in European children – how I.Family extends the IDEFICS cohort. Int J Epidemiol. 2016 Dec 31. pii: dyw317. doi: 10.1093/ije/dyw317.

A Mikkelsen, C Galli, G Eiben, W Ahrens, L Iacoviello, D Molnár, V Pala, P Risé, G Rodriguez, P Russo, M Tornaritis, T Veidebaum, K Vyncke, M Wolters, K Mehlig. Blood fatty acid composition in relation to allergy in children aged 2-9 years: results from the European IDEFICS study. Eur J Clin Nutr 2017 Jan;71(1):39-44. doi: 10.1038/ejcn.2016.158.

Anchor: links


WSAS – West Sweden Asthma Study at the University of Gothenburg
Krefting Research Centre