Introduction: The national representative survey of secondary school students (age: 15-18 years) was undertaken between 1997 and 2000. The authors presented the data related to the nutritional and life-style habits.
Methods: The data for 6,347 students (48.4% boys and 51.6% girls) were evaluated. The anonymous questionnaire contained inquiries on nutritional rhythm, food frequency, use of vitamin and mineral supplements, smoking, alcohol and drug consumption habits, regular physical activity and family background (qualification, smoking, alcohol consumption). Within the frame of personal interviews the authors collected data on students' history with regard to occurrence of diabetes mellitus, other chronic diseases and in girls the time of the first menstruation. Concerning parents' history the authors collected information on the incidence of hypertension, myocardial infarction, diabetes mellitus, and stroke. STATISTICAL EVALUATION: Data were recorded in Data-Ease database system, in forms of individual records. The individual records were converted to be suitable for the statistical evaluation by SPSS for windows 9 statistical program pack. Data are presented as means and percent distribution.
Results: The nutritional rhythm of students was irregular. The daily consumption of milk, dairy products, fruits, fresh vegetables and vegetable dishes was insufficient. Eighty percent of students added extra salt to foods. More than 49% of students regularly consumed some forms of vitamin and/or mineral supplements. Thirty five percent of boys and 30% of girls smoked daily, 14.6% of boys and 5.9% of girls consumed alcohol at least once a week. Fifteen percent of boys and 11% of girls already tried taking drugs at least once. Only 50% of boys and 31% of girls were involved in a regular physical activity. Twenty two percent of fathers and 25% of mothers had university qualifications, whereas intermediate qualifications were recorded in 63 and 59%, lower qualifications occurred in 8 and 13% of parents, respectively. The incidence of smoking was 42% for fathers and 36% for mothers. Weekly alcohol consumption was recorded in 11%, daily consumption in 7% among fathers, the same figures for mothers were 4-4%, respectively. The incidence of hypertension, myocardial infarction, diabetes mellitus, and stroke was 26; 3.4; 5.4 and 1.5% in fathers and 32.9; 4.2; 6.6 and 1.5% in mothers.
Conclusions: The data collected in the complex nutritional hygienic survey revealed serious deficiencies in the nutritional and life style habits of secondary school students. These factors considerably contribute to the unfavorable statistics of nutrition related non-infectious diseases in adulthood.