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What is the relationship of cold weather to the spread of diseases? Does cold weather really cause illness?

طقس العرب GO 2021-01-16 2021-01-16T12:35:43Z
رنا حسن
رنا حسن
محرر أخبار - قسم التواصل الاجتماعي
cold weather can r

Arab Weather - Centuries ago, this idea prompted mothers to insist on children wearing hats and layers of clothes to protect them from the cold, insisting not to go out after bathing with wet hair, and to keep children away from cold air currents, but if this is a myth, then why do colds and flu arrive Winter climax?

 

Many people associate cold weather with the common cold, while cold weather is not directly responsible for making people sick, viruses that cause colds may spread more easily at lower temperatures, and exposure to cold and dry air may negatively affect the immune system. In the body .

 

The pathogen

With regard to infectious diseases, germs are the ones that cause the disease, not the cold weather itself, so even you have the flu or a cold, you must be in contact with these viruses, as rhinoviruses usually spread through: direct contact from person to person, or through inhaling air that contains In small droplets, or a virus-laden spray, the virus then attaches to the cells within the nasal passages and begins to multiply and spread throughout the upper respiratory tract.

It is known that cold viruses reach their peak in spring and autumn, and influenza viruses reach their peak in winter, and although cold cannot be the only cause of disease, there is a relationship between cold and the spread of diseases, as cold air contributes to creating the conditions that Lead to disease.

 

Viruses and the immune system

Some viruses spread more in cold weather, such as the rhinovirus that causes colds, which reproduce better at temperatures lower than the temperature of the human body, so that these degrees are usually found in the nose, as the temperature in the nasal cavity usually ranges from 33-35 degrees Celsius. It is lower than the basic human body temperature of 37 ° C, which makes the nose a fertile environment for viruses to reproduce.

 

Studies have also found that the cells of the immune system start a stronger anti-virus defense in the lung at the basic human body temperature, versus the lower nasal cavity temperature, this means that the body may not resist the virus if the temperature in the nose and upper airway is lowered in cold weather, which The likelihood of disease increases.

 

Among the other reasons that affect the immune response of the human body in cold weather are:

  • Sudden changes in temperature.
  • Vitamin D levels drop during the winter months due to less exposure to sunlight.
  • Spending more time indoors, which brings people closer together.
  • Narrowing of the blood vessels in the airway due to inhaling the cold and dry air, which prevents white blood cells from reaching the mucous membrane, making it difficult for the body to fight germs.

 

 

The air inside and the lack of ventilation

Cold weather may push most people to stay indoors where the weather is warm, but the air is more dry, making it easier for cold and flu viruses to reach the dry nasal passages, and the lack of ventilation in the winter increases the risk of disease spreading and transmitting it from person to person due to the remaining spray Sneezing laden with viruses in the air, researchers have found that good ventilation, as well as high relative humidity indoors, reduces the activity of the influenza virus.

 

The air outside

Winter air outside can also be linked to the spread of influenza, the cold, dry air allows the influenza virus to survive and transmit itself. Research has found that the outer shell of the influenza virus becomes more durable at temperatures near freezing, making it more active, more flexible and easier to transmit in season Winter, in addition, the cold air outside reduces the ability of mucus and capillaries in the nose to clear pathogens from the nose.

 

Cold weather and asthma patients

If you have a history of asthma or upper respiratory disease, cold weather may cause some health complications, but you can still run outside after taking precautions, warm up gradually before you start running outdoors, and wear a neck tie over your mouth to help In heating the air entering your lungs, plan your course to avoid potential asthma triggers, such as exposure to smoke.

 

So the transmission of viruses is responsible for colds and influenza infection, not cold weather, however, exposure to cold weather can increase a person's risk of infection with the virus, as these viruses may live and multiply more effectively in cold temperatures, making it easier for them to spread and infect more People, cold weather also reduces the immune response and reduces the body's ability to fight germs.

 

protection

It is good that there are multiple methods people can take to avoid getting sick during the winter, and here are some of them:

 

1. Take a vitamin D supplement, or eat foods high in vitamin D, such as fatty fish, mushrooms and eggs.

2. Get plenty of sleep.

3. Avoid cold and dry air.

4. Wash your hands regularly.

5. Always sneeze and cough in clean tissues, and if a tissue is not available, it is better to use the elbow instead of the hands, because contaminated hands spread viruses.

6. Not to share food, drinks and food tools with people who have a cold or the flu.

 

This article was written originally in Arabic and is translated using a 3rd party automated service. ArabiaWeather is not responsible for any grammatical errors whatsoever.

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