A recent study in Portugal shows that almost all 18-year-olds start using the internet before age 16, with social media dominating their screen time and increasing concerns over online gambling and emotional distress.
Portugal’s latest study of 18-year-olds suggests young people are spending more of their waking hours online, with social media continuing to dominate their screen time. The Institute for Addictive Behaviours and Dependencies, known as ICAD, said 60% of those surveyed used the internet for at least four hours a day, while use of five hours or more has continued to climb. The research, based on young people taking part in National Defence Day 2025, also found that mobile phones remain the main gateway to the web and that platforms such as TikTok, Facebook and Instagram are the most commonly used social networks.
ICAD said the numbers do not automatically point to harm, noting that online life is now closely mixed with offline routines. Even so, the study shows a growing intensity of use. Almost 45% of respondents said they spent two to three hours a day on social platforms, while 13% said they were on them for six hours or more. Other major reasons for being online included searching for information for reading or study, gaming, including betting, and watching films, videos and tutorials.
The survey also suggests that internet habits are beginning earlier. In 2025, 99% of respondents said they had started using the internet before the age of 16, and 39% before the age of 10. ICAD said that increase is slightly more pronounced among girls, who also appear to spend more time on social media and searching online, while boys spend longer gaming. Online gambling with real money remains a concern: 17% of 18-year-olds said they place bets online, with the rate far higher among boys than girls. The institute said 35% of young people reported at least one problem linked to internet use in the previous 12 months, most commonly emotional distress, followed by weaker performance at school or work.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
