In 2023, the prevalence of overweight among children under 5 in Japan was approximately 2.1%. Forecasts for 2024 through 2028 suggest a modest increase, with values rising from 2.2% in 2024 to 2.4% in 2028. This represents a consistent upward trend with an expected year-on-year variation of about 0.1 percentage points. The compound annual growth rate (CAGR) over this forecast period is around 1.9%, indicating gradual growth in the prevalence of overweight young children.

Future trends to watch for include:

The impact of public health initiatives aimed at reducing childhood obesity.
Potential changes in lifestyle and dietary habits affecting young children.
The influence of socio-economic factors on health outcomes among children in Japan.