Objective
The constant access to online content has raised concerns worldwide. Excessive engagement with digital platforms can contribute to significant mental health challenges, including increased levels of depression, anxiety, and stress. This phenomenon is related to impairments in neuroanatomical areas leading to adverse outcomes. The study aimed to analyze the associations between internet addiction (IA), depression, anxiety, stress, and a diversity of sociodemographic variables, including gender, social media use, employment status, sleep, and physical activity patterns.

Methods
A sample of 618 adolescents and young adults in southern Brazil was analyzed (mean age: 23.34). Participants filled an online form and statistical analysis was conducted.

Results
The results show that depression, anxiety, and stress levels were higher in women (p < 0.001), whereas IAT scores did not reach statistical significance, despite being higher in women (p = .06). Those who are employed may have lower levels of IA; poor sleep habits are associated with higher internet addiction and social media use is associated with poorer mental health and IA (p< 0.001).

Conclusion
Mental health support and internet use limits should be offered to the general population in terms of prevention and treatment of these conditions.