Let's be careful about heat stroke

2018.07.17

What is heat stroke?
Heatstroke is a condition in which staying in a hot and humid environment for a long period of time disrupts the balance of water and salt in the body and impairs the body's ability to regulate body temperature.It is known that it is more likely to occur not only when the temperature is high, but also when the humidity is high and when it suddenly becomes hot.

Take advantage of WBGT values
Well, do you know the index called "WBGT value"? It is a thermal index that comprehensively incorporates "temperature", "humidity", and "radiant heat (heat emitted from the ground, buildings, and people)", and it is possible to know the environment where heat stroke is likely to occur. Also known as the "heat index," it is also used to prevent heat stroke during sports and at work.Although it is measured with a dedicated thermometer, you can see the current status and predictions of WBGT values ??in various places on the heat stroke prevention information site of the Ministry of the Environment (http://www.wbgt.env.go.jp/).Please find a nearby observatory and use it as a reference.As a guideline, if the WBGT value exceeds 28 degrees, it is said that you are more likely to develop heat stroke, so you need to be more careful than usual when it is high.For those who find it troublesome to visit the site, there is also an email delivery service (http://www.wbgt.env.go.jp/mail_service.php) for information on predicted and actual WBGT values.

Considering individual differences
The susceptibility to heat stroke differs from person to person.People with chronic diseases such as heart disease, brain disease, diabetes, and thyroid disease, and people who are unwell due to colds, lack of sleep, or hangovers are more likely to develop heatstroke.Be careful as it is easy to wake up even if you are not used to the heat.Of course, if you feel unwell, do not overdo it and do not work or play in a hot environment.

Prevention of heat stroke
Key points for prevention are hydration and avoiding heat.Take plenty of water and salt, avoid working outdoors and turn on the air conditioner indoors, avoid the sun by wearing a parasol or hat when going out, wear cool, well-ventilated clothing, and take frequent breaks in cool places. .

signs of heat stroke
Heat stroke can be life-threatening.In 28, 621 people died from heatstroke nationwide.Even if you think it's okay, it progresses rapidly and you can't control it yourself.If you experience headache, nausea, dizziness, cramps, weakness, or fatigue, tell people around you to drink water and rest in a cool place.Also, if you notice someone who is dizzy, pale, slow-moving, or behaving strangely, let them rest.In some cases, take an ambulance to the hospital.
In the summer, there are many practical trainings and outdoor work.Stay healthy and have a fun-filled summer.

　　　　　　　　　　　　　　　Tokyo University of Marine Science and Technology Health Management Center (Etchujima) Naoko Fukuda