In some countries of the WHO European Region, 1 in 3 children aged 6 to 9 years is living with overweight or obesity. Mediterranean countries have the highest rates of obesity, but the situation there is starting to improve.
These are some of the findings of a new WHO European Childhood Obesity Surveillance Initiative (COSI) report on the fourth round of data collection (2015-2017), presented at this week's European Congress on Obesity (held online this year). The report gives the latest data available on 6- to 9-year-olds in 36 countries in the region. A questionnaire collecting data from 2021 on the impact of the pandemic will follow from some countries.
"COVID-19 could potentially amplify one of the most worrying trends in the WHO European Region - growing childhood obesity," said Dr Hans Henri P. Kluge, WHO Regional Director for Europe.
"Overweight and obesity are directly associated with life-threatening noncommunicable diseases such as cardiovascular diseases, diabetes and cancer. What we must do to brighten the future of coming generations is implement science- and data-based policies that can help reduce childhood obesity, while promoting healthier diets and physical activity," Dr Kluge added.
Effect of the COVID-19 pandemic on childhood obesity
COVID-19 is likely to negatively impact childhood obesity levels in the WHO European Region, and hence the results of the next rounds of the COSI survey. School closures and lockdowns can impact access to school meals and physical activity times for children, widening inequalities. Childhood obesity prevention strategies should therefore remain a priority during the pandemic.
Policies having a positive effect in hardest-hit countries
Overweight and obesity stabilized or declined in some of the 13 European countries where it was possible to examine trends over time. Greece, Italy, Portugal and Spain, which all have the highest rates of obesity, as well as Slovenia showed a decreasing trend for both overweight and obesity. The reduction of the overweight prevalence ranged from 4 to 12 percentage points for boys and from 3 to 7 for girls.
In the last years, some of these countries implemented WHO-recommended measures to help tackle obesity rates, such as imposing taxes on sweetened beverages, food marketing restrictions and physical education classes.
"The COSI data show a decreasing trend in childhood obesity in the countries which have the highest rates of obesity. They have heard the alarm from the previous studies and implemented the policies we know work. It is heartening to see that when countries act it has a measurable effect," said Dr Nino Berdzuli, Director of the Division of Country Health Programmes at the WHO Regional Office for Europe.
The latest COSI data come from 36 countries that participated in the survey during the 2015-2016 and 2016-2017 school years, measuring around 250 000 primary school-aged children. The COSI report holds the most comprehensive data for boys and girls on overweight, physical activity and dietary patterns.
Overall, the prevalence of overweight (including obesity) was 29% in boys and 27% in girls aged 6 to 9 years; the prevalence of obesity was 13% in boys and 9% in girls. These figures hide wide variations between countries. For more data on overweight and obesity among boys and girls in 36 countries, please see the figure at the end of this press release.
The highest proportions of childhood overweight and obesity were observed in Mediterranean countries such as Cyprus, Greece, Italy and Spain, where over 40% of boys and girls were living with overweight, and 19% to 24% of boys and 14% to 19% of girls were living with obesity.
The lowest proportions of childhood overweight and obesity were observed in central Asian countries such as Kyrgyzstan, Tajikistan and Turkmenistan, where 5% to 12% of boys and girls were living with overweight and less than 5% were living with obesity.
On average, almost 80% of children had breakfast every day, around 45% ate fruit daily, and around 25% consumed vegetables daily. However, country-level figures for these healthy habits varied widely: daily consumption ranged from 49% to 96% for breakfast, from 18% to 81% for fruit, and from 9% to 74% for vegetables.
Frequent consumption of sweet snacks (27% of children overall) was more widespread than consumption of savoury snacks (14%). The percentage of children eating these unhealthy foods more than 3 days a week also varied greatly between countries - from 5% to 62% for sweet snacks and from less than 1% to 35% for savoury snacks.
On average, 1 in 2 children used active transport (walking or cycling) to and from school. In all countries, most children spent at least 1 hour per day playing outside (ranging from 62% to 98% in different countries).
Children with more educated parents were more likely to engage in sports/dancing in most countries. The difference between children of parents with high and low levels of education exceeded 20 percentage points in 7 countries. On the contrary, children of less educated parents were more likely to walk or cycle to and from school.
Lack of data for children under 5 years
COSI provides the Region with a large dataset on the prevalence of overweight and obesity and the determinants of childhood obesity for primary school-aged children. Unfortunately, no such large dataset exists for children under 5. The need to strengthen surveillance initiatives for this younger age group with the support of all governments and other stakeholders is urgent.