Introduction: The Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) pandemic affected and altered several parts of our daily habits and lifestyle. Adolescents could not remain unaffected. Aim of the present study is to evaluate changes in health quality and daily habits of teenagers induced by the coronavirus disease 2019 (COVID-19) pandemic. Material and Methods: A detailed search of the literature was conducted in Pubmed to find published articles related to changes in health quality, lifestyle and habits in adolescents induced by COVID-19 pandemic.. Results: A total of 17 articles met our inclusion criteria and found suitable for our study. Additional resources provided useful information were also included. COVID-19 pandemic has caused changes in adolescents’ sleep habits and quality, such as increase in sleep duration and later bed time. Screen time increased but physical activity decreased. Moreover, eating patterns were altered and there was a tentionfor weight gain. Adolescents’ mental health and behavior were also affected, and in many cases negative feelings were arisen and mood symptoms were noticed. Conclusion: COVID-19 pandemic has unquestionably changed the adolescents’ everyday habits and lives. Considering that adolescence is the period in which physical and mental development of young people take place, we should keep in mind that the results of such effects might accompany them in their adult life.