obese

Poor and middle-income countries have seen the greatest surge in overweight and obese children.

The number of overweight children - which includes those who are obese - has also increased to the extent that now 1 in five school-age children and adolescents are overweight.

The drugs will be offered to millions of the most obese people on the NHS over the next few years, but experts warn services are already struggling to deal with unprecedented demand.

Currently one in four reception-aged children in Wales are categorised as overweight or obese.

Specialist excess weight clinics treat severely obese children in England aged 2-17, who are flagged as needing help by their GP or another doctor.