In 2023, asthma mortality in Japan was documented, though specific figures for that year are not indicated in the dataset. From 2024 to 2026, forecasts predict a constant asthma mortality rate of 500 deaths per hundred individuals, standardized. A decline is anticipated starting from 2027, with standardized rates decreasing to 400 deaths through to 2028.

Future trends to watch include:

Effectiveness of new healthcare policies and medications in further reducing asthma mortality rates.
Environmental factors and changes in air quality impacting asthma prevalence and mortality.
Technological advancements in medical care and early detection techniques for asthma management.