Madrid was hit by a rare snowstorm. What harm will the snowstorm do to society?

It's getting colder and colder. Compared with spring and summer, there are more things to pay attention to when traveling in cold weather. Before taking part in outdoor travel, you should check the weather conditions of your destination in advance, but if you encounter sudden weather changes during outdoor travel, the most important thing is to take warm measures.

Severe hypothermia can lead to death. In medicine, low temperature means that people are exposed to cold environment for a long time. After losing too much heat, the body temperature gradually drops, and the physiological function is weakened, which can lead to death in severe cases. The risk of hypothermia is easy to understand. Death caused by hypothermia is usually called freezing to death. There are many reasons for the temperature drop when traveling outdoors in cold weather. For example, at high altitude, the air above the snow line has low oxygen content, which affects the normal metabolism of climbers. If you are exposed to low temperature, strong wind and lack of oxygen for a long time, it is easy to lose temperature. When the body temperature drops below 35℃, the human body has entered a low temperature state. The direct consequences of hypothermia are endocrine disorders, hallucinations and unconsciousness before death. Even if you save a life, you may leave sequelae. Drinking can not only keep warm, but also have negative effects.

In cold weather, tourists consume more protein, carbohydrates and fats, minerals and vitamins than usual, so we can't overemphasize the restriction of fat and carbohydrates as usual. We should correct the wrong idea of drinking to keep warm. Alcohol and water cannot produce heat. On the contrary, alcohol can stimulate blood vessels on the body surface, accelerate blood circulation on the body surface, and make people feel fever. In fact, the human body is losing heat. Therefore, drinking cold medicine will not only have a cold effect, but also cause symptoms such as colds and frostbite. In particular, drinking to keep out the cold is more harmful to the elderly. Because the elderly are not particularly sensitive to temperature changes, if drinking alcohol causes central thermoregulation disorder, it is easy to damage thermoregulation function.

First aid and self-help methods for patients with hypothermia. If severe hypothermia occurs, the safest way is to send a doctor for first aid. But if you can't get emergency treatment, you must learn to save yourself! Stay calm, this is the first condition. A nervous mind will speed up the circulation and heartbeat of the body, thus losing more calories; Keep your body dry, wet clothes will double the heat dissipation rate, so be sure to change into dry clothes as soon as possible, or try to make your body dry; Heating from the center of the body, although the hands and feet are the easiest to feel cold, the fastest way to make the body temperature rise is to heat the center of the body; Lower body temperature and reduce body heat dissipation. In case of a disaster in Shanghai, you must immerse yourself in the water and wait for help. It is best to shrink your body and put your hands on your chest as much as possible to slow down the rate of heat loss; Drink hot drinks instead of alcohol. When you are awake, you can warm your body quickly by drinking moderate temperature drinks, but because of the low temperature, hot drinks are easy to cause burns.