According to the Southern Hydrometeorological Station on February 27, the heat wave continues to spread in Ho Chi Minh City. It is forecasted that in the next 10 days, up to March 8, the heat wave will continue in Ho Chi Minh City with the highest daily temperature ranging from 34 - 36 degrees Celsius.
According to the warning of the Southern Hydrometeorological Station, hot weather combined with high UV index affects people's health when participating in outdoor activities for a long time. Along with that, low humidity in the air, dry weather, easily leads to fire and explosion.
Many people still have to work and move continuously for many hours under the hot sun. When returning home, some people apply some ways to cool down quickly such as turning on low air conditioning, pouring water on their face, letting the fan blow directly on their face... However, according to experts, these cooling methods will be dangerous to health.
Workers work under the scorching heat
Close the door, turn on the air conditioner at low temperature to cool quickly
Specialist Doctor 2 Nguyen Viet Hau, Head of the Emergency Department, University of Medicine and Pharmacy Hospital, Ho Chi Minh City, said that the habit of immediately entering a room after being in the sun, closing the door and turning on the air conditioner at the lowest level to cool down quickly poses many potential health risks.
"Because when the body releases heat, blood vessels dilate and are returning from heat, a sudden drop in temperature causes blood vessels to constrict, which can easily cause headaches, dizziness, lightheadedness, and heat shock," Dr. Hau analyzed.
In addition, according to Dr. Hau, regularly closing the door when using the air conditioner also causes some harm. Because the air in a closed room can become 2-5 times more toxic than the air outside if you often close the door. About 15-30 minutes, you should open the door to let the room "breathe", replacing the air in the room.
Sudden temperature changes can easily cause heat shock.
Splash cold water on your face immediately after sun exposure.
Master - Doctor Ta Quoc Hung, Department of Dermatology - Cosmetic Dermatology, University of Medicine and Pharmacy Hospital, Ho Chi Minh City, said that when a person works outdoors in the hot sun for many hours or comes home from the sun, suddenly pouring cold water on the face will affect the autonomic nervous system, causing heat shock and low blood pressure.
Bathe immediately after coming back from the sun
Specialist Doctor Nguyen Minh Thuan, Nam Sai Gon International General Hospital, said that in the current hot weather conditions, many people have the habit of going to the bathroom after being in the sun to clean off sweat and cool down their bodies.
"Taking a bath right after coming back from the sun will cause the body temperature to drop suddenly, the pores and micro-vessels under the skin to contract, thereby hindering blood circulation, leading to colds. This can even affect the heart rate, blood pressure and lead to a stroke soon after," Dr. Thuan shared.
Doctor Thuan recommends sitting and resting for 15 - 20 minutes after coming back from the sun to stabilize body temperature, then wiping the body first to let the body adapt to the water temperature before starting to bathe the whole body.
Taking a bath right after coming in from the sun will cause your body temperature to drop suddenly.
Put the front of the fan, mist fan
According to Dr. Thuan, many people after being in the sun often put their faces in front of a fan or mist sprayer to cool down quickly. However, this is not a good habit, because at this time the body sweats a lot, causing the blood vessels under the skin to dilate to release heat. If large gusts of wind blow directly on the body, the sweat will evaporate even more strongly, thereby reducing the skin temperature and the blood vessels will suddenly contract while the body's internal temperature is not stable. "This is the cause of the temperature imbalance between the inside and outside environment. As a result, after standing up, you will easily experience dizziness, lightheadedness or stroke on the spot," Dr. Thuan noted.
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