What percentage of children are obese in Greece?

As of my last knowledge update in September 2021, the most recent data on childhood obesity in Greece was collected in the 2020 Childhood Obesity Surveillance Initiative (COSI) report by the World Health Organization (WHO). According to this report, the prevalence of childhood obesity (defined as a body mass index or BMI greater than or equal to 30 kg/m²) in children aged 6-9 years was 14.3% for boys and 8.9% for girls.

However, it's important to note that this data may have changed since then, as childhood obesity rates can fluctuate over time. For the most up-to-date information on childhood obesity in Greece, I recommend consulting a reliable and recently published source, such as the WHO's COSI reports or the Greek Ministry of Health's website.