Medical professionals in Japan are warning that approximately one in three people in the country suffer from high blood pressure [3].

This health crisis is critical because untreated hypertension is a primary cause of heart disease and strokes. When left unmanaged, the condition leads to arteriosclerosis and other severe complications that can be fatal.

According to medical data, there are approximately 43 million people with high blood pressure in Japan [1]. Despite the availability of treatment, 45% of these patients remain untreated [2]. This gap in care increases the risk of sudden medical emergencies across the population.

Doctors said the first step toward prevention is for individuals to measure their blood pressure at least once per year [5]. Regular monitoring allows for early detection and intervention before permanent vascular damage occurs.

These warnings coincide with World Hypertension Day, which was observed on May 17 [4]. The timing serves as a reminder for the public to prioritize cardiovascular health as part of their annual medical routine.

Public health advocates said high blood pressure often presents no obvious symptoms. Because the condition is silent, many of the 43 million affected individuals are unaware of their status until a major health event occurs [1].

“Approximately one in three people in the country suffer from high blood pressure.”

The high rate of untreated hypertension in Japan suggests a significant gap between clinical prevalence and patient awareness. With nearly half of the affected population not receiving treatment, the national healthcare system faces a long-term increase in high-cost emergency interventions for strokes and heart failure, making preventative annual screening a vital economic and public health priority.