It's too hot! The air conditioner does not blow directly. Is it harmful to your health?

Experts say that air-conditioning diseases are mainly manifested in three aspects, especially the respiratory tract, so we should start from these aspects when preventing them, and treat them in time once the corresponding symptoms appear. In addition, most people who suffer from air-conditioning diseases now are young people, especially white-collar office workers who work in companies and often work under central air conditioning, so these people should pay special attention.

First, the respiratory tract is the most "fragile"

Tip-Pay attention to the temperature transition

Myth: Many families are afraid of catching cold by blowing cold air, so they turn on the air conditioner and cover the quilt at night, thinking that this can prevent air-conditioning diseases. In fact, the respiratory tract is the most fragile, and covering the quilt can only keep warm but not prevent diseases. Although the household air conditioner is not suitable for Legionella to grow, it will not get pneumonia, but cold air enters the human body from the respiratory tract, and when you wake up, your nose and mouth are dry, and you will still have cold symptoms. Therefore, it is sometimes impossible to prevent cold air from invading the respiratory tract.

Once the air conditioner breaks through the fragile "defense line" of the respiratory tract, there will be cold symptoms such as cough, sneezing and runny nose, that is, upper respiratory diseases. For Guang 'anmen Hospital, among the medical outpatient visits of nearly 800 people every day, there are 40 to 50 cases of colds caused by air conditioning alone. Director He said that this kind of cold is often called a cold. On the one hand, because of frequent access to air-conditioned rooms, the body can not adapt to the uneven temperature; Second, because the air-conditioned rooms are closed, there are many people in the room and the air circulation is poor. If a person has cold symptoms, it will soon spread to others.

Air conditioning causes serious lower respiratory diseases, especially pneumonia. Especially when working and studying under central air conditioning, central air conditioning is very suitable for the spread of Legionella, and the incubation period is about 2- 12 days. Although the upper respiratory tract is unresponsive, it causes fever, chills, muscle aches, dry cough, no phlegm or less phlegm. If not treated in time, it will continue to have fever, dry cough and chills? Most antibiotics have no effect, and severe cases will die of respiratory failure.

In addition, although the room is cold, the humidity is too low, which is not good for people's eyes and nasal mucosa. A dry environment is suitable for the survival of bacteria and viruses. People should be especially careful when their noses and throats are dry. At the same time, the dust and dust mites at home cannot circulate, and people with allergies are prone to allergic reactions.

Expert tip: If you often go in and out of air-conditioned rooms, there must be a temperature transition, such as turning up the temperature or turning off the air conditioner first, and you must dry your sweat first when you enter the door. Stay in an air-conditioned room for a long time, drink as much water as possible, and often mop the floor with a mop filled with water to moisturize. If you have cold symptoms, you should go to the hospital in time to avoid deterioration and cross infection.

Susceptible population: people who often go in and out of air-conditioned rooms; The elderly, children and other people with chronic diseases or low immunity, especially those who receive hormone drugs and smokers.

Second, the brain nerves will be unbalanced.

Tips-Strengthen air circulation

Myth: We often see young people and overweight people turn on the air conditioner at home all day, or enter the house from the outside sweating and turn the temperature down very low. Some people even run under the air conditioner and blow directly for a while, but they don't know that when blowing directly, the wind speed increases, the temperature will drop by 3℃-4℃, and their heads will faint. Moreover, sudden cold air can easily stimulate sweat pores to contract suddenly, causing headaches.

I often hear people who often sit in air-conditioned rooms say, "I feel dizzy and see stars, and forget things." According to Director He, this is a common brain imbalance reaction caused by air conditioning disease. Director He said that air conditioning will not only catch a cold, but also cause serious damage to the brain. The negative ions contained in the air can inhibit the central nervous system and relieve brain fatigue. But the air conditioner absorbs too many anions, which makes more and more cations in the room. The imbalance of anion and cation also makes the human brain nervous system unbalanced.

If indoor air conditioning only makes you dizzy and sick, then indoor air conditioning adds a little danger to the driver's brain and nerves. Many drivers who are used to turning on air conditioners sometimes feel tired, headache and numbness in their hands and feet. It is easy to get sleepy in summer, lose control of the brain and feel uncomfortable all over, which is easy to cause traffic accidents.

Expert tip: Try to avoid staying in an air-conditioned room for a long time. If possible, it is best to keep the room temperature around 24℃, and the temperature difference between indoor and outdoor exceeds 7℃. Always open the window for ventilation to ensure indoor and outdoor air convection. 1-3 hours after startup, it is best to turn off the air conditioner for a period of time and open the window to breathe fresh air. Natural cold air is the best. If conditions do not permit, it is best to go to outdoor corridors and other places with windows for air exchange every hour, especially during lunch break. The most important thing is not to blow directly under the air conditioner because of the heat. Once you feel dizzy, you must leave the air-conditioned room in time and breathe fresh air.

For the driver, if the car is extremely hot, don't turn on the air conditioner immediately. Open the window to exhaust the hot air before turning on the air conditioner. The temperature can't be too low, so it's best not to smoke. Besides, don't sleep in the car with the air conditioner on. If you catch a cold, the carbon monoxide emitted by the engine leaks into the car and is easily poisoned.

Susceptible population: people who work and study in offices and office buildings under central air conditioning for a long time; Patients with neurological diseases such as migraine; Young men; Fat people who are afraid of heat and drivers.

Third, joints and intestines and stomach are easy to catch cold.

The trick-take a hot bath and exercise more.

Myth: Many people don't realize the harm caused by blowing air conditioners for a long time, and think that they just have a cold, dizziness and headache, especially young and strong people don't care. As we all know, cold air does great harm to joints. If you don't pay attention to keep warm, you will easily get arthritis in old age, and it is difficult to cure it again.

Young people often don't pay much attention to joint pain caused by air conditioning, but long-term air conditioning will cause such problems. In summer, the outdoor air is hot, and people generally wear less. But the indoor air conditioner blows badly and the clothes are so thin. Such a low-temperature environment will stimulate the rapid contraction of blood vessels and poor blood circulation, leading to joint injury and cold pain, such as stiff neck and back, soreness of waist and limbs, and numbness of hands and feet.

In addition, too "cold" in the room can easily lead to weakened gastrointestinal movement. In addition, people often eat cold drinks in summer, and both inside and outside the intestine are controlled by "cold". It's not surprising that many people pull and vomit.

In fact, this kind of autonomic nervous disorder caused by sympathetic nerve excitation is most likely to occur in young women, mainly manifested as menstrual disorder. Nowadays, many white-collar women work in the company office, under low temperature air conditioning all day and wearing short skirts at the same time. Originally, their physique was relatively weak, and their hands and feet dissipated heat quickly, leading to vasomotor disorders. Such cold stimulation is likely to affect ovarian function, causing ovulation disorder, menstrual disorder or severe abdominal pain.

Expert tip: People who have worked in offices and office buildings for a long time, especially those who often sit in offices, may wish to prepare a set of long-sleeved trousers in the company, especially young women. It is best to protect the joints of the knees with towels or thick clothes, and at the same time stand up and exercise at intervals to improve the peripheral blood circulation. If there are old people and children at home, don't turn on the air conditioner too low, turn it off for half an hour to an hour, or try to use natural wind for refrigeration.

When you come home from work, take a warm bath first, and the water should not be overheated, so as not to stimulate nerves and joints, and then massage yourself, or apply a warm towel to the joints. It is certainly better if you can do proper exercise, such as running, playing ball and doing yoga.

Susceptible population: young women who have been working and studying in air-conditioned environment for a long time; Old people or immature children with poor resistance, weak constitution and osteoporosis.

Air conditioning use skills

● The air conditioning temperature should not be too low. Generally, it is advisable to control it at around 25℃, and it is advisable to keep it 3℃-5℃ lower indoors than outdoors.

● Drink plenty of boiled water in the air-conditioned room. Boiled water such as honeysuckle, chrysanthemum and rehmannia can be used as tea to clear away heat and detoxify.

● Limit air conditioning time. Even if the weather is very hot, don't leave the air conditioner on all day, let alone let it blow.

● Pay attention to keep the indoor air fresh. Ventilation the room regularly, at least once in the morning and evening, each time 10-20 minutes. At the same time, avoid smoking in air-conditioned rooms. Even if the air conditioner is on, it is best to open a small gap in the window for ventilation. .