¹Department of Clinical Chemistry, University Hospital of Tromsø, Tromsø, Norway

²University College of Vestfold, Tønsberg, Norway

³Hammerfest Hospital, Hammerfest, Norway

⁴Department of Biochemistry, Institute of Medical Biology, University of Tromsø, Tromsø, Norway

⁵Fering klinikken, N Feiring, Norway

⁶Institute of Community Medicine, University of Tromsø, Tromsø, Norway

Correspondence to: J Brox, Department of Clinical Chemistry, University Hospital of Tromsø, N-9038 Tromsø, Norway. E-mail: jan.brox@rito.no

Guarantor: Dr J Brox.

Contributors: JB originated and designed the study, EB made the dietary investigation and analyses, KO analysed the fatty acids, MLL, BØ and SA contributed to data organization and statistical analyses. JB wrote the paper with co-workers.

Introduction: Students aged 13 and 14 y, in a region in northern Norway with high blood cholesterol levels and high mortality from coronary heart disease (CHD) in the adult population, were studied with respect to lifestyle, dietary habits, nutritional intake and blood lipids including fatty acids in serum. The students came from a coastal community with seawater fish as an important part of the traditional diet, and an inland community with meat from reindeer as a major constituent of the diet.

Objective: To investigate whether the traditional diet was maintained among the adolescents and to evaluate the lifestyle and blood lipids. The study was followed up after 1 y.

Results: The adolescents from the coastal region did not maintain the traditional diet. In the inland region the students had a high intake of meat, probably reflecting the traditional food culture. The inland boys had higher mean body mass index (BMI) than the coastal boys, and 12% had BMI>28, as compared to none of the coastal boys. Other findings showed that the students had higher levels of blood cholesterol than in the south of Norway and several other countries (about 25% had total cholesterol >5.2 mmol/l), higher intake of dietary sugar and fat than the national recommendations and little intake of seawater fish with corresponding low levels of n-3 fatty acids. This did not change after 1 y of follow up. Some 10-20% reported daily smoking and 8-13% reported that they rarely or never did physical exercise. About 30% of the students presented no factors negatively related to development of cardiovascular disease.

Conclusion: The findings demonstrate, in the majority of students at the age of 13 and 14 y, the appearance of factors contributing to development of cardiovascular disease (CHD).

Sponsorship: This study was supported by the program 'Medisinsk forskning i Finnmark, University of Tromsø'.

European Journal of Clinical Nutrition (2002) 56, 694-700. doi:10.1038/sj.ejcn.1601381

adolescents; blood lipids; fatty acids; diet; lifestyle