In 2023, Japan's Parkinson's disease mortality was at a significant benchmark from which future projections are made. From 2024 to 2028, the mortality rate shows a consistent upward trend, starting from 10.8 deaths per hundred thousand in 2024 and reaching 12.5 by 2028. The year-on-year growth rates are 4.63% from 2024 to 2025, 3.54% from 2025 to 2026, 3.42% from 2026 to 2027, and 3.31% from 2027 to 2028. The compound annual growth rate (CAGR) over these five years is approximately 3.72%.

Future trends to watch for include:

Advancements in medical treatment and technology, which could reduce mortality.
Demographic shifts, particularly the aging population, which may increase rates.
Policy interventions and health care improvements that aim to better manage the disease.