and 117 boys) still represents a major public health challenge, especially in the poorest parts of the world. This reflects the threat posed by malnutrition in all its forms, with there being underweight and overweight young people living in the same communities.

Children and adolescents have rapidly transitioned from mostly underweight to mostly overweight in many middle-income countries, including in East Asia, Latin America and the Caribbean. The authors say this could reflect an increase in the consumption of energy-dense foods, especially highly processed carbohydrates, which lead to weight gain and poor lifelong health outcomes.

Dr Fiona Bull, programme coordinator for surveillance and population-based prevention of noncommunicable diseases (NCDs) at WHO, said: "These data highlight, remind and reinforce that overweight and obesity is a global health crisis today, and threatensthe number of obese children and adolescents was seen in East Asia, the high-income English-speaking region (USA, Canada, Australia, New Zealand, Ireland and the UK), and the Middle East and North Africa.

In 2016, obesity rates were highest overall in Polynesia and Micronesia, at 25.4% in girls and 22.4% in boys, followed by the high-income English-speaking region. Nauru had the highest prevalence of obesity for girls (33.4%), and Cook Islands had the highest for boys (33.3%).

In Europe, girls in Malta and boys in Greece had the highest obesity rates, at 11.3% and 16.7% of the population respectively. Girls and boys in Moldova had the lowest obesity rates, at 3.2% and 5% of the population respectively.

Girls in the UK had the 73rd highest obesity rate in the world (6th in