Studying critical variables such as the educational achievement, the mental health and the nutritional behavior of the young people may result in important implications. The current paper investigates the determinants of these variables as well as the univariate relationships between these basic variables for the young people in Egypt. Three models are constructed, one for each basic variable; the "Education Model" is a linear regression model estimated using the ordinary least squares method, and the "Mental Health Model" and the "Nutritional Behavior Model" are ordered probit models estimated using the maximum likelihood method. To estimate these models, the determinants for each basic variable are specified and proxy variables to represent several of them are composed, based on the available data from the survey of young people in Egypt (SYPE-2009). The needed statistical manipulations and tests and treatments for the statistical assumptions have been performed. According to the given theoretical framework, each model has its basic variable as the dependent variable. The determinants of this basic variable together with none, one, or both of the other two basic variables represent the independent variables. The results show each of the estimated models as a good fit but the significant variables and the direction of the relations do not always agree with the study's hypotheses. Several arguments are presented to show that these results are most probably due to the critical limitations of the study. The hypotheses and the models need to be tested on another dataset using specially designed surveys that avoid the possible limitations.