Byron Jones healthy after being obese at 11
Anglesey has overtaken Merthyr Tydfil as the area with the highest proportion of overweight or obese children, according to Public Health Wales.
The proportion for Wales (26%) is still worse than the worst region for child obesity in England (24%).
A total of 32.4% of four and five-year-olds are overweight or obese on Anglesey. Merthyr (16.4%) is still top for obesity.
Byron Jones, 17, said he lost almost six stone (35kg) over three years after weighing 17 stone (110kg).