Instagram is a mobile app that allows users to share their photos and videos to their followers. The content offered daily on Instagram is consciously or unconsciously absorbed by users, and for some it becomes a way of life. The number of Instagram users is growing every day, but so are the trends set by influential people on this platform. In this regard, there is often a process of comparing oneself with others, either in physical context, material possession, presentation of one's own virtues, beauty, talents, etc. All this can be of great influence for users of this social network. The purpose of the study was to discover a tendency towards social comparison of young people using Instagram. The aim of the study was to find out to what extent the subjects compare with others in terms of physical appearance, physical fitness and eating habits. The paper used a method of analyzing the contents of documents and a quantitative method of research. The survey was conducted via an online survey, and respondents gave answers to questions that were closed, and then gave answers via a five-factor scale. The survey included 59 respondents. The target group is mostly young, aged between 18 and 30. The study confirmed the hypothesis that Instagram affects appearance-related desires to some extent, since users tend to compare with other users. The survey did not show that Instagram content encourages the adoption of healthy eating habits. It is important to mention that influencers and celebrities have the greatest influence on users.