It has been said that the lungs are the forest that guards your ventilation. Indeed, it is the only organ that interacts directly with the external environment 24 hours a day. Its importance cannot be overstated, as a six-minute strike can lead to death. Every day, it breathes in and out 10,000 liters of gas, the equivalent of 250 standard medical oxygen tanks. At the same time, a variety of pathogenic bacteria, dust particles, chemicals, viruses, also riding on the breathing “windmill” invasion, damage to our delicate lungs. Due to the attack of various risk factors, modern people’s lungs have become very fragile, the age of chronic obstructive pulmonary disease has also greatly advanced. 30-year-old people, 50-year-old lungs, more and more common in the clinic, which deserves people’s attention. Climbing three floors to gasp badly A domestic forum has a post titled “do a game, test your lung capacity”. Posters called on netizens, “while holding down the keyboard ‘0’, while holding their breath, press out the number of the most people, their lung capacity is also the strongest.” Some people exclaimed, “I am 90 years old, sometimes only run two or three hundred meters, can not breathe, lung function is really weak ah!” Netizen message said, “Usually climbing stairs, more than 3 floors is difficult to breathe. The amount of air that you try your best to exhale after inhaling deeply is the lung capacity. This is one of the common indicators for testing lung function, which can provide a preliminary and quick understanding of lung function. The lung capacity of a normal adult is about 2400-3400 ml. However, a growing number of surveys show that a decline in lung capacity beyond normal levels has become a common trend across all age groups. Compared with 1985, in 2010 China’s lung capacity for urban and rural primary and secondary school students between the ages of 7 and 18 declined by 11.4 percent, and for college students by nearly 10 percent. According to the results of the 2011 National Student Physical Fitness Standard test for primary and middle school students in Shanghai, lung capacity scored at the bottom of both the attainment and excellence rates compared to other indicators, and the higher the grade, the worse the lung capacity. With this, respiratory diseases are increasing. There are many lung diseases that jeopardize health, and common ones include chronic obstructive pulmonary disease (hereinafter referred to as chronic obstructive pulmonary disease (COPD)), bronchial asthma, lung cancer, and cardiopulmonary and vascular diseases, all of which are increasing in incidence. Currently, chronic obstructive pulmonary disease (COPD) has become the second largest disease in China in terms of single disease mortality rate, killing an average of 2.5 people every minute and causing about 5 million disabilities. There are also predictions that by 2025, China will have more than 1 million lung cancer patients per year, making it the world’s number one lung cancer country. Lung function should be checked annually after the age of 45 Lung function reaches its peak in one’s twenties and declines year by year thereafter. People should take the initiative to protect their lungs from a young age. So, how is your lung function? You can find out the changes in your lung function by careful observation in your life. If you have shortness of breath when climbing stairs, you should first consider whether you have a reduced heart function; if you have shortness of breath when walking on level ground, it may be caused by a decline in lung function. A simple lung function test – a blow test – is a key tool for determining lung health. Unfortunately, however, people are not screened and seen as well as they should be. Surveys at home and abroad have shown that there is a general lack of awareness of lung function tests among general practitioners or primary care doctors, which delays the early diagnosis and treatment of chronic respiratory diseases. Among patients clinically diagnosed with chronic obstructive pulmonary disease (COPD), only 34% have received pulmonary function tests. In China’s grassroots hospitals, the relevant examinations are almost blank. If the area of lesions in the lungs is less than 50%, the body does not feel; if it is more than 50%, there are symptoms, and then go to the doctor, it is already too late. Medical experts remind that people over 45 years of age should be like monitoring blood pressure, at least once a year to the hospital to check lung function. Long-term smokers, recurrent respiratory infections, long-term exposure to indoor pollution, occupational dust exposure, on the other hand, from the age of 40 years old, every six months to check lung function. Quitting smoking, avoiding second-hand smoke and reducing dust inhalation are the most effective means of protection. The fall and winter seasons are the most frequent period of haze, once the air visibility is low, you should avoid opening windows, reduce early morning and evening outings to reduce the chances of inhaling toxins.