Preventing Heat Stroke in the Blazing Summer Sun

Summer in Japan typically spans from June to August, and each month has its own characteristics:

Period
June: This is the rainy season, characterized by high humidity and frequent rain.
July: After the rainy season ends, the full heat of summer begins, with temperatures steadily rising.
August: This is the hottest month, with consistently high temperatures and humidity across the country.  

During this period, temperatures often exceed 30°C (86°F), making for hot and humid days.

• Table of Contents
• What is Heat Stroke?
• Preventing Heat Stroke
• What to Do When Heat Stroke Strikes

What is Heat Stroke?

Heat stroke ("necchusho") is a general term for health problems caused by an imbalance of fluids and sodium in the body due to the inability to regulate temperature in a high-temperature environment. It occurs particularly frequently in summer.

Causes

Hot and Humid Environment: Being in a hot and humid environment for an extended period makes it difficult to control body temperature.

Dehydration: Without sufficient hydration, the body loses fluids through sweating, making it hard to regulate body temperature.

Poor Physical Condition or Exhaustion: If you are in poor physical condition or exhausted, your body's ability to regulate temperature is impaired.

Symptoms

Preventing Heat Stroke

Proper Hydration

Drink water regularly, even before you feel thirsty. Staying hydrated is especially important during outdoor activities.

It is also recommended to drink sports drinks or eat salt candy to supplement the sodium and minerals lost through sweating.

Dress Appropriately

Wear light and breathable clothes. Cotton fabrics that absorb sweat easily and quick-drying materials are suitable.

Avoid direct sunlight by wearing a hat or using a sun umbrella.

Managing Physical Condition

Do not overexert yourself and take breaks when you feel tired. Elderly people, children, and those with low physical stamina should be especially cautious.

If early symptoms of heat stroke appear, immediately take a break in a cool place and drink plenty of water and sports drinks to replenish electrolytes.

What to Do When Heat Stroke Strikes

Go to a Cooler Place

Immediately relocate to a shaded or air-conditioned area.

Hydration

Drink water or a sports drink to rehydrate and replenish fluids and electrolytes in the body.

Cool Your Body

Cool down by applying cold towels or ice packs to your neck, armpits, and the base of your thighs.

Call an Ambulance in Case of Emergency

If you experience severe symptoms or feel dazed, call 119 immediately for an ambulance.

By knowing how to prevent and prepare for heat stroke in advance, you can enjoy the Japanese summer safely and with peace of mind.