Be careful of "dehydration", which has a high risk of heat stroke but no subjective symptoms.

In the midst of intense heat, heat stroke requires special attention.

Experts call attention to a condition called "shadow dehydration," in which the body's water content is low and the risk of heat stroke is high, but there are no subjective symptoms.

According to Professor Masuji Hattori of Hyogo College of Medicine, who is familiar with heat stroke, the amount of water in the body is usually about 60% for adults and about 50% to 55% for elderly people aged 65 and over.

Even if the amount of water in the body decreases, the symptoms of dehydration do not appear clearly, and the condition without subjective symptoms is called "shadow dehydration", and the risk of heat stroke increases at the stage just before dehydration. is.

In particular, elderly people who have less water in their bodies than adults and are less likely to feel thirst should be careful.

In addition, Korona-ka reduces the chances of exercising, weakens the muscles that store water in the body, and makes it difficult to feel thirst in the mouth by wearing a mask. It means that the risk is increasing.

Professor Hattori said that it is effective to pinch the back of the hand to quickly notice such "dehydration", and if the return is poor, there is a possibility that there is a lack of water.

The measures for "dehydration" are "frequent hydration" and "meal". Even if you are not thirsty, you can rehydrate with a glass of water per hour as a guide, and you can also rehydrate with meals. It is important to eat as many as three meals as possible because it can be replenished.

In addition, it is important to move your body by crouching or standing up within a reasonable range in an air-conditioned room so that you do not lose muscle mass due to lack of exercise.

Professor Hattori, a specially invited professor, said, "The new corona will continue to refrain from self-restraint, and as muscles weaken, even if the body wants water, it will soon become dehydrated. Anyway, be aware of diligent hydration. I want you to be careful about "Kakure dehydration," which can be called the "heat stroke reserve army."