Instagram has become a ubiquitous part of young adults' lives, profoundly shaping their mental health and well-being. This research was conducted to investigate the pervasive influence of Instagram usage among young adults aged 17-22, particularly focusing on its impact on anxiety, depression, and self-esteem. The rationale for this study stems from the growing concern about the psychological effects of prolonged exposure to idealized images and lifestyles presented on social media. Utilizing a comprehensive survey methodology, data was collected from a diverse sample of young adults. The results reveal that 95.2% of participants use Instagram daily, with nearly half spending over four hours on the platform each day. The study highlights significant mental health repercussions, with 70% of respondents reporting feelings of anxiety, depression, and inadequacy attributed to their Instagram use. These findings underscore the critical need for interventions to mitigate the negative impact of Instagram on mental health and to promote healthier online behaviors and interactions. The implications of this research are far-reaching, suggesting that both individual users and social media platforms must take proactive steps to foster digital environments that support mental well-being and reduce the psychological burden on young adults.