Today, the Internet used to reach information and the computer used to access the Internet have increasingly become widespread, and determining the effects of these tools on individuals’ health could prevent possible future problems. Considering the fact that the Internet and computer are commonly used as an educational tool, it is important to conduct studies to determine the effects of these tools on individuals’ health. The results of these studies could be presented to individuals using these technologies, and the related deficiencies, if any, should be overcome. The present study was designed based on the feedback provided by students who would, as future teachers, use such technologies in their professional lives. The participants of the study were 453 students attending Ziya Gökalp Education Faculty at Dicle University. In the study, the scale developed by Özmutaf, Özgür and Gökmen (2008) was applied to the preservice teachers in an online environment. The findings revealed that the participants’ Internet and computer use had influence on their health with a significant difference in terms of the variable of gender (p<.05) and that there was no significant difference with respect to the participants’ ages and their departments.