Although previous studies have suggested an association between digital media use and health, detailed knowledge about how different types of digital media impact adolescent health is limited. This cross-sectional population-based study explored the relationship between time spent on various digital media and adolescents’ self-rated general and mental health. The study included 3566 Swedish high school students aged 16–17 years. Associations between time spent on digital media (social media, gaming, watching movies/series/video clips etc. and digital schoolwork) and self-rated health outcomes (general health, self-esteem, symptoms of worry/anxiety and low mood/depression, trust in other people, head/neck/shoulder pain and sleep quality) was assessed. Statistical analyses employed logistic regression models adjusted for covariates (sociodemographic variables and health behaviours). In the adjusted models, spending very high amounts of time (≥ 6 h/day) on any digital media, except schoolwork, was associated with poor self-esteem, symptoms of low mood/depression and poor sleep (ORs 1.35–2.93, p< 0.05). Spending six hours or more on digital media was also associated with worry/anxiety (for social media and gaming), head/neck/shoulder pain (for social media, watching movies/series/video clips and schoolwork), poor general health (for gaming and watching movies/series/video clips) and low trust (for gaming) (ORs 1.39–3.18, p< 0.05). High amounts of time (4–5 h/day) of watching movies/series/video clips was associated with daily symptoms of low mood/depression, neck/shoulder pain, and low trust in other people (ORs 1.46, 1.41, and 1.32, p< 0.05). This study indicates a dose-response relationship between digital media use and adverse health outcomes in adolescents, where adverse associations start to appear after 4–5 h, particularly for watching movies/series/video clips. However, further longitudinal studies, randomized controlled trials and public health interventions focused on healthy and balanced use of digital media are warranted.

The 2030 Agenda for Sustainable Development and its seventeen Sustainable Development Goals were adopted by the United Nations General Assembly in 2015. It is a bold agenda for global social, environmental and economic development, with human health as a central theme. Even though substantial improvements in health have been achieved during the last decades, every year over 5 million children die, mostly from preventable causes, and 300 000 women die in conjunction with childbirth. Premature deaths from non-communicable diseases are increasing, and our ability to treat infections is under threat through widespread anti-microbial resistance. Climate change is recognized as the biggest threat to health in our time. When the world now starts to plan for how society and our health systems should be reorganized after the COVID-19 pandemic the 2030 Agenda could and should play a central role. In this context, Agenda 2030 provides an ambitious roadmap for development, with its emphasis on collaboration across borders and disciplines. The agenda is achievable but reaching its goals will require strong commitment at all levels and societal change on a large scale.

Agenda 2030 och de 17 globala målen antogs av FN:s medlemsländer 2015. Målen utgör en gemensam plan för en hållbar utveckling och därigenom förbättrad hälsa i världen.

Mellan 1990 och 2015 har hälsan i världen förbättrats. Medellivslängden har ökat och barna- och mödradödligheten har halverats. 

Fortfarande dör över fem miljoner barn före sin fem­årsdag, 300 000 kvinnor dör i barnsäng varje år, antibiotikaresistens och icke-smittsamma sjukdomar ökar. Klimatförändringar har utsetts till århundradets största hälsohot. 

När vi planerar för hur vårt samhälle och hälsosystem ska se ut efter covid-19-pandemin kan Agenda 2030 och dess fokus på internationellt samarbete och tvärprofessionella angreppssätt spela en viktig roll.