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Earthquakes lead to an increase in heart disease

, medical expert
Last reviewed: 01.07.2025
Published: 2012-09-01 19:15

The 9.0 magnitude earthquake off the east coast of Honshu Island in Japan on March 11, 2011, shocked the Japanese seismological community. It was one of the largest earthquakes in Japanese history, second only to the 1896 and 1923 earthquakes in Japan in terms of casualties and destruction.

The prefectures most affected by the earthquake were Iwate, Miyagi and Fukushima. The disaster destroyed 388,783 homes and killed 15,861 people, with 3,018 people missing.

After conducting research in the hardest-hit areas of Japan, Tohoku University School of Medicine staff led by cardiologist Dr. Shiroaki Shimokawa discovered an exacerbation and increase in certain diseases, namely heart failure, acute coronary syndrome, strokes and pneumonia, and an increase in cardiac arrest. The scientists obtained the information by analyzing emergency medical service data from February 11 to June 30 of each year, starting in 2008 and ending in 2011.

Negative emotions and fear caused by the earthquake and its aftershocks led to profound changes in the body. This significantly affected the endocrine system, the main one in organizing the general adaptation syndrome. In addition, the situation was aggravated by the lack of medicines due to interruptions in transport between cities, which is associated with the destruction of infrastructure.

Experts even gave a name to the functional damage to the cardiovascular and nervous systems that suffered from the aftermath of the natural disaster. They called this syndrome "earthquake disease."

People who find themselves at the epicenter of tremors experience severe fear, their heart rate increases, their extremities feel cold, they tremble throughout their body, they experience stabbing and squeezing pain in the heart area, and the risk of hypertensive crises and strokes increases.

Doctors note a direct dependence of the number of vascular diseases of the heart and brain on the strength and frequency of seismic vibrations. There is also this connection with the clinical course of diseases and their outcome, but the causes and consequences of the impact of earthquakes on the human body have not been fully studied.

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