Against cold, wear a face mask in cap 
 
 
Su Xinmin Shandong college of traditional Chinese medicine 
 
 
China's traditional Chinese medicine to 

        In winter, because of the cold and air pollution, used when a lot of people go out for a long time wu wear nose and mouth with a face mask or scarf. Admittedly, wearing a mask to prevent polluted air, such as sand has very good efficacy, but this kind of practice can reduce human cold-resistance, are more likely to develop a cold. 
 
        In the human nasal cavity is rich in capillaries, mucous membrane and nose hair, is the body's first line of defense system. The capillary is one of the important hub of nasal blood flowing, many cavernous smooth vascular network can make blood circulation more exuberant. Mucous membrane covering the surface of the nasal cavity and the respiratory tract, play a protective role. Against cold air is human body normal physiological function of the outside world, as long as by proper exercise, the body's ability to hardy will be increased. LaoDai masks easily cut nasal natural fight cold ability, increase the risk of colds. When others in the cold, like the scarf when the mask, think they can "dual-use" thing, actually this is not health, because the scarf of raw materials is more wool and chemical fiber fabric, often with harmful substances, if the scarf round mouth, when the person is breathing, fiber and bacteria, such as easy to inhale lung, very adverse to human body health. Of course, walking in the wild, to resist wind and cold, or in the air pollution of the environment, is the need to wear masks, but time shoulds not be too long. People who are allergic to cold air, such as chronic bronchitis or asthma and respiratory system disease, should pay attention to keep warm, while going out to wear a mask. In addition, the flu season, go there may be a large number of pathogenic bacteria in public places, should wear masks. 
 
        Because of increasingly serious air pollution, respiratory disease, asthma, allergic rhinitis, chronic obstructive pulmonary disease patients. For asthma, rhinitis, patients with copd, air quality requirements higher than the average person, the ash haze environment, tiny particles in the air is very easy to load the virus, make patient resistance drops, sensitivity increases, and therefore susceptible to disease. This kind of person in the ash haze weather, go out wearing masks have certain disease prevention role. But can't afford to mask the main role, is still the most direct method to improve air quality, or avoid the environmental air quality is not high. Especially in asthma and allergic disease patients to avoid going out in the ash haze weather, or select the ash haze relatively little time, wear masks out for the best. 
 
        The expert reminds, prevent colds and wearing a mask, it is better to wear a hat. Because a person's head skin than other parts of the skin is thick and dense, head of the vascular and lymphatic tissue is extremely rich, and contains a lot of the sebaceous glands, sweat gland, etc. Head often appear, pore also is bigger, the most easy to loss of heat. In heat loss at the same time, due to air convection, cold to take advantage of a loophole through head invading the body. In winter, the temperature is low, even in a stationary state, if you don't wear a hat, from the head loss of heat also is very considerable. Research shows that people who do not wear a hat and don't often exercise, when outside temperature 15 ℃, through the head heat lost about a third of the total body heat; 4 ℃ when they lost 50% of the total quantity of heat; At 0 ℃ can be lost 60% of the total quantity of heat. So, in the winter, if you don't wear a hat to go out, heat from escaping through the head out very quickly, at the same time, the people are susceptible to cold invasion and illnesses such as colds.
 
 
 
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