12th meeting of the WHO European Childhood Obesity Surveillance Initiative (COSI)

13–14 June, Bergen, Norway


For the past 10 years, the WHO European Childhood Obesity Surveillance Initiative (COSI) system has measured trends in overweight and obesity among children aged 6–9 years using a standard protocol.

These data enable public health officials to monitor trends in overweight and obesity among participating countries, evaluate the effectiveness and impact of policies intended to address childhood obesity, and compare obesity and overweight levels among countries.

Such information is essential for improving health in the WHO European Region and accelerating progress toward the achievement of the Sustainable Development Goals.

In 2018–2019, the fifth round of COSI data collection commenced, and will include around 40 countries.


The 12th COSI meeting will take place on 13–14 June in Bergen. Participants will exchange experiences, discuss national results, and review methods and procedures in preparation for the next round of data collection. The main objectives of the 12th meeting are to:

  • convene COSI principal investigators and discuss history, status and future plans within COSI countries;
  • discuss results of the fourth round of data collection;
  • discuss recent and forthcoming COSI publications;
  • discuss new publication topics, new potential questions for the COSI questionnaire and the process of preparing COSI publications;
  • discuss country actions to halt childhood obesity; and
  • discuss the Science and Technology in childhood Obesity Policy (STOP) protocol for children under the age of 5 years.

Additionally, the meeting will include an optional writing workshop where participants can work on peer-reviewed papers about social inequalities in obesity and lifestyle behaviours, parents’ perception of children’s body weight, urban–rural differences in obesity, and lifestyle behaviours.