After a magnitude 7 earthquake in Kumamoto Prefecture, which collapsed a resident's home, about 70% of victims slept in cars, according to a national survey. Doctors note an increase in economy class syndrome (thromboembolism) due to prolonged immobility with legs lowered.
According to research, after the 2016 Kumamoto earthquake, 51 people were hospitalized with this syndrome, and more than 60 of the 223 disaster-related deaths occurred among those who slept in cars.
Japan's Ministry of the Environment published recommendations on its official X account to prevent heatstroke and economy class syndrome. The ministry advises regularly replenishing water and salt, avoiding prolonged static postures, and monitoring cabin temperature.
Prevention tips
- Ventilate the cabin every hour, use insect screens on windows.
- Perform exercises: rotate ankles, massage calves toward the heart, march in place, swing arms, stretch neck and shoulders.
- Drink a glass of water every hour, avoid alcohol and caffeine.
- Avoid staying in one position for long, especially in cramped spaces; move toes, walk, and take deep breaths.
- Park in shaded, well-ventilated areas; use air conditioning or a fan.
- Wear breathable clothing and cool the body with cooling gels.
The Ministry of the Environment of Japan has called on drivers who sleep in their cars to take measures to prevent heatstroke and economy class syndrome. The ministry recommends regularly ventilating the cabin, taking breaks to stretch, and maintaining adequate hydration.
