The study monitors the prevalence and trends of substance use and gambling among 15–16‑year‑old students across different European countries.

30.4.2026 | All content on the website has been updated to better meet users' information needs and the institute's strategic objectives.

Quality report: The adult population’s well-being and health – Healthy Finland survey Data description Statistical presentation The statistics describe the well-being, health and experiences of health and social services of adults residing in Finl...

Wastewater research provides independent national and regional data on drug use in Finland. The national study covers over 60 % of the Finnish population.

Phenomenon‑based analysis challenges us to use data innovatively Problems related to people’s health and wellbeing are increasingly complex today and therefore difficult to solve. Instead of examining problems from a single perspective, it is wort...

Online courses on mental health On this page Course description These online courses, developed by the Finnish Institute for Health and Welfare (THL), are designed to strengthen your competence in mental health promotion, reduce stigma through inc...

Preventing and identifying violence between young people On this page Who are the guidelines for? This guideline helps professionals working with children and young people to identify violence between young people and its different forms. The guid...

Youth violent crime is on the rise – often driven by cumulative problems Youth violent crime, which had been declining for a long time, has increased in recent years. In particular, violent offences committed by under-15s have become more common s...

The study follows the cohort born in Finland between 2026 and 2029 together with their families. Its aim is to ensure that the future of children and young people is built on a sustainable foundation based on sound, research-based knowledge for the next hundred years.

Blog In our blog, our experts comment on current topics, interpret the significance of societal phenomena, and present new perspectives and solution proposals. THL’s official position is presented by the institute’s leadership. Previous blog posts...

Shared knowledge base for health and social services THL collects and compiles data on health and social services, such as information on population health, services and access to care. This information supports service development, decision‑makin...

Drugs – Population-level use by region On this page Long-term increase in drug use THL’s nationwide wastewater-based epidemiology shows marked regional differences in the use of different drugs and in how patterns of use have changed over time. On...

Cultural diversity in mental health support On this page Who is this guidance for? This guidance is intended for professionals working in the social and healthcare sectors. Why was this guidance created? The purpose of this guidance is to support ...

Quality report: Well-being of children and young people – School Health Promotion study Data description Statistical presentation The School Health Promotion study, which the statistics are based on, describes the perceived health and well-being o...