Traditional Culture Encyclopedia - Weather forecast - Cold winter is a high incidence of colds. Why is it easy to catch a cold in cold winter?

Cold winter is a high incidence of colds. Why is it easy to catch a cold in cold winter?

Cold winter is a high incidence of colds. Why is it easy to catch a cold in cold winter? Cold winter is a high incidence of colds, especially influenza. The only mild symptoms are runny nose, sneezing, cough, sore throat and weakness of limbs. In severe cases, it can lead to multiple organ failure, which is life-threatening. Why is it easy to catch a cold in cold winter?

Why is it easy to catch a cold in winter? 1, catching cold will reduce immunity.

When the temperature is low in winter, once you catch a cold, your immunity will be reduced, and you can't better fight against pathogenic bacteria, thus inducing colds or other infections. Under normal circumstances, energy is in a state of dynamic balance, all physiological activities in the body are inseparable from energy, and the immunity against pathogen infection also needs enough energy. When the weather is cold, more energy is needed to maintain normal body temperature. Relatively speaking, the immune system's energy against pathogenic bacteria is reduced, which makes the immune system inactive and low. At this point, pathogenic bacteria take advantage of the situation and cause respiratory tract infection.

People's living habits have changed.

In the cold winter, in order to keep the indoor temperature, most families close their doors and windows, and outdoor activities are reduced. This is because of the change of living habits and behaviors, which increases the risk of catching a cold. Staying in a closed environment with no air circulation, a large number of microorganisms are suspended in the air, which reduces the air quality, and bacteria will invade the body and induce colds.

3. The cold virus replicates on the nasal mucosa at low temperature.

In cold winter, the cold environment in the nasal cavity is suitable for rhinovirus reproduction and replication, and rhinovirus is the main factor causing colds.

How to reduce the number of colds in cold winter? 1, keep warm.

People with weak immunity need to pay attention to keep warm, especially children and the elderly over 65, and increase or decrease clothes according to the weather changes to prevent the cold from invading. In addition, children's metabolism is fast, and they need to increase or decrease clothes according to the temperature. If children wear too many clothes and catch cold after sweating, they are prone to catch a cold.

2. Wear a mask when going out.

After the coronavirus storm, people realized the importance of wearing masks. Wear a mask whenever you go out, which can prevent the spread of cold virus and reduce the risk of respiratory infection. In addition, wearing a mask is also conducive to keeping the nasal cavity warm and reducing the number of colds.

3. Take more physical exercise.

You can't stay indoors all the time because of the cold weather, even if you want to take part in outdoor activities in winter. Regular exercise can improve heart and lung function, enhance cold tolerance, improve resistance and immunity, and better cope with cold viruses. However, after sweating, you should pay attention to keeping warm, and you can't take off your coat at once.

4. Pay attention to personal hygiene

The cold virus can be spread by air droplets or touching the nose and mouth with hands. Therefore, we should pay attention to personal hygiene, develop the good habit of washing hands frequently, wash hands with soap and tap water before and after meals, and wash hands for no less than 20 seconds at a time.

5. Pay attention to window ventilation.

In sunny conditions, open the window for ventilation 2~3 times a day, and each time should not be less than 30 minutes. Paying attention to indoor air circulation can reduce indoor microbial concentration and reduce the number of colds. In addition, people with poor immunity try not to go to crowded public places.

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People with poor immunity should be vaccinated against influenza as much as possible, which is an effective way to prevent influenza. You can also take antiviral drugs in advance under the guidance of a doctor, which can effectively prevent infection. In addition, the balanced intake of nutrition for the body, can not blindly tonic; Get enough sleep, at least 7-8 hours a day.