RESUMO
Osteoporosis and related fractures due to discomfort, disability, decreased quality of life and death is a major health problem in the world, According to the importance of recording and reporting Osteoporosis, lifestyle in growth duration, during teenage, is the most risk factor that determines Osteoporosis in adolescents and the elderly. The aim of this study was assessing adolescence lifestyle and its relation with osteoporosis among adolescents in Qazvin, Iran. In this descriptive-analytical study, 300 teenagers were selected by stratified cluster sampling. The scale for data collection was a self-administered questionnaire containing 15 items related to life style. Using SPSS 16, the data were analyzed by Chi-square and Fisher's exact tests. The results showed that the majority of teenagers [71.3%] don't regularly have physical activity. There were significant differences between physical activity patterns of male and female teenagers [P=0.001]. It was shown that female teenagers [66.7%] use more foods containing vitamin D, cola-type beverages and caffeine than male teenagers [34.7%].Only, 26.9% the female teenagers and 33.5% of the male teenagers drink one cup of milk daily. The results showed that 29.3% of male teenagers and 24.3% of female teenagers haven't used any method for facilitating calcium absorption in the body. The findings of this study showed that Iranian teenagers had several known risk factors and unfavorable behaviors. Therefore, modifying teenagers' lifestyle by preventive educational strategies on osteoporosis can help to prevent osteoporosis in adolescents