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Background and Objective: The majority of medicines are associated with some form of side effects due to high prevalence of self- medication in Iran .There is not any drug without side effects the prevalence of self- medication in Iran's provinces is increasing. This study was done to determine the knowledge and practice among woman about self -medication based on health belief model. Materials and Methods: This cross- sectional study carried out on 385 women whom referred to health centers in Isfahan, Iran during 2008. Data were collected by a questionnaire including knowledge, practice and health belief model structures. Results: The mean score of knowledge was 82.97±13.80 and means score of perceived susceptibility 72.48±17.11, severity 71.60±14.73, benefits 68.29±17.13 and barriers 61.64±19.67. 86% of women have done self–medication at least in one disease in 6 months earlier Including: cold 225 (57.6%), headache 28 (53.7%) and anemia 51 (13.2%). The main reasons for self –medication were previous experience and medicine accessibility .The main reasons to avoid self –medication was the side effects of medicine. Conclusion: Self-medication can be prevented thought increasing knowledge and education about severity of drug side effects.

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Background and Objective: Although acquired immune deficiency syndrome (AIDS) is a vital medical problem but it is more prominant as a personal behavior social cultural phenomenon. Adolescents have been identified as risk population in immune deficiency virus. Health education is only effective method to prevent AIDS. This study was carried out to determine the effect of educational program on knowledge and health belief model structures about acquired immune deficiency syndrome (AIDS) among high school female student in Isfahan, Iran. Materials and Methods: This quasi-experimental study conducted on 72 female students whom divided equaly into case and control groups. The questionnaire included demographic characteristics, knowledge and health belief model. Educational interventions were performed in lecture and group discussion. Data were analyzed using SPSS-18, paired t-test and independent t-test. Results: There were no significant differences in knowledge, perceived severity, benefits and barrier in two groups before intervention. After intervention, there were significant increases in knowledge, perceived severity, perceived benefits and perceived barriers (P<0.05), in the intervention group, but there was not significant increases in perceived susceptibility. Conclusion: Education based on health belief model can improve knowledge, perceived severity, benefits and barriers in female student. More educational sessions are required for improving perceived susceptibility in high school female students.

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Background and Objective: Smoking is one of the important risk factors for many diseases and increases the premature death.Transtheoretical models is one of the behavioral models for behavior understanding specifically in addictive behaviors. This study was done to evaluate the application of transtheoretical model to determination of smoking behavior among smokers.

Methods: This descriptive - analytical study conducted on 450 male smokers in Gorgan, northern Iran during 2014. Data gathering instruments were Diclemente smoking stages of change, Velicer decisional balance and temptation, Prochaska processes of change measurements along Fagerstrom test for nicotine dependency.

Results: Based on the stages of changes, 39.1%, 13.8%, 42.4%, 2.7% and 2% of subjects were in precontemplation, contemplation, preparation, action and maintenance stage, respectively. There was a significant relationship between stages of change with all transtheoretical model variables and nicotine dependency (P<0.05). Cons of smoking, self-reevaluation, self-liberation, and social liberation had the highest effect while helping relationship had the lowest effect.

Conclusion: Cons of smoking, self-reevaluation, self-liberation, and social liberation had the strongest predictors of smoking stages movement. Helping relationship had the lowest predictor of smoking stages movement.