The SUN study's main aim is to evaluate the associations between nutrition, lifestyle, and chronic diseases. The study began in 1999 and is an open-enrolment cohort in Spain, consisting of more than 23,000 university graduates as of 2025. Participants are sent a questionnaire every two years to complete, which varies in length and content. The study is expected to run until 2075.
Study design
Cohort - open, Cohort
Number of participants at first data collection
23, 321 (participants, as of 2025)
Recruitment is ongoing
Age at first data collection
≥18 years (participants)
Participant year of birth
Varied (participants)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
1999
Primary Institutions
University of Navarra (Universidad de Navarra) (Academic, Spain)
Links
en.unav.edu/web/department-of-preventive-medicine-and-public-health/proyecto-sun/informacion-general
Profile paper DOI
Funders
Banco Santander-Central-Hispano (Industry, Spain)
Carlos III Health Institute (Instituto de Salud Carlos III, ISCIII) (Research, Spain)
European Regional Development Fund (ERDF) (Government, Europe)
Government of Navarra (Autonomous Government Department of Health) (Government, Spain)
Spanish Ministry of Health (Ministerio de Sanidad, MISAN) (Government, Spain)
Ongoing?
Yes
Data types collected


Engagement
Keywords