Northern Sweden Diet Database (NSDD)

NSDD is a uniform database that since 1985 has collated habitual eating habits in >100,000 residents in Northern Sweden, of which close to half have repeated measures available.

The NSDD is a uniform database integrating self-reported data on habitual eating habits collected by means of a semi-quantitative food frequency questionnaire (FFQ) in two large ongoing research projects in Northern Sweden; DietVIP within the Västerbotten Intervention Project (VIP) and DietMON within the Northern Swedish MONICA project. The NSDD is thus regularly updated with new data from VIP and the recurrent MONICA screenings.

The semi-quantitative FFQ contains three main sections covering:

General portion size: estimated for three different food groups (potatoes/rice/pasta, meat/fish, and vegetables)

Frequencies of food intake: reported on a 9-point scale ranging from never, few times a year, 1-3 times/month, 1 time/week, 2-3 times/week, 4-6 times/week, 1 time/day, 2-3 times/day and  >4 times/day

Diet supplements: the participant can indicate supplementation with multivitamins, multiminerals, iron and selenium during the last year or 14 days. 

Some general information is also collected related to meal habits and adherence to specific diet regimes.

Principal head of the NSDD is the Department of Biobank Research, Umeå University, Umeå, Sweden.

Institution Umeå University
Country Sweden
Infrastructure type On-line collection or database
Disciplines Health and medicine
Language of operation Swedish
Keywords nutrition variablesNorthern Swedenfood frequency questionnairedietdatabase


The database is open for both national and international research. Ethical approval is a prerequisite for data access. To apply, a data withdrawal form (including project description, material transfer agreement and list of diet variables) is submitted to the secretariat. All proposals undergo scientific review by the NSDD Steering Group at the Department of Biobank Research. More information can be found on the homepage.

Contact information

Prof. Ingegerd Johansson,

Find out more