Diabetes is one of the most concurrent diseases worldwide. Approximately one out of nine people in the world are currently suffering from diabetes and this number will only grow. It is still not clear why some people develop diabetes and how is progresses. The Hoorn studies and the Diabetes Care System West-Friesland studies were designed to investigate the course of development and progression of diabetes over a period of several years. The main aim of our group is to determine the (psychological, social, biological and genetic) factors that influence the development and progression of diabetes.
Find more information about our cohorts,  such as design and how to get access, under cohorts.
Find more information about current projects, under projects.

Take a look at our publications, under publications.

Get an introduction into our research team, under research team.

Voor Nederlandse tekst, zie informatie voor deelnemers.
Cohort profile paper

In april 2018 the cohort design paper of the Hoorn Study and the New Hoorn Study was published in the International Journal of Epidemiology.

Jacqueline Dekker

From 1st of July 2018, Jacqueline Dekker has left the Amsterdam UMC, location VUMC to pursue a clinical career. In the past 25 years, Jacqueline has worked at the department of Epidemiology and Biostatistics and was co-director of the Diabetes Research Centre Hoorn of the VUMC.

With over 400 publications, Jacqueline’s research has contributed to translational research of diabetes and cardiovascular disease, linking results of genetic and physiologic studies to implications for prevention and public health. Jacqueline Dekker was instrumental in the set-up and management of the Hoorn Study and New Hoorn study, prospective cohort studies of diabetes and diabetes complications. In addition, she chaired until 2016 the National Academic Diabetes Biobank, which is part of the Dutch ‘Parelsnoer Institute’.

Jacqueline obtained her Medical Degree in 2014. After combining her work as a researcher with clinical work for a few years, she has decided to pursue a clinical career. For all ongoing and future collaborations please contact the Hoorn steering committee: hoornstudy@vumc.nl


Petra Elders and the Hoorn research team have been granted a EFSD INTENSE grant of 500.000 euro, to develop an E-health application for the use in community pharmacies to analyse and improve medication non-adherence in people with type 2 diabetes mellitus using oral blood glucose and blood pressure lowering drugs.

Koopman et al. in Journal of Biological Rhythms

Anitra Koopman and Femke Rutters have published findings on the association between social jetlag and the prevalence of type 2 diabetes mellitus in the New Hoorn study in the journal of Biological Rhythms.