The harm caused by indoor air pollution?

In daily life, poor indoor air can cause physical discomfort and poor health (such as headache, itchy eyes, difficulty breathing, skin allergies, fatigue or vomiting, etc.), and in the work environment, it can cause high absenteeism and Low production efficiency. 

But the harm of indoor air pollution is not only that, many diseases and even deaths are related to it. The "Indoor Air Pollution and Health" article published by the World Health Organization in September 2011 shows that 4% of the world's diseases are related to indoor air quality, including pneumonia, chronic respiratory diseases, and lung cancer. The global health risk overview published by the authoritative medical journal The Lancet also pointed out that in 2010 3.2 million people died prematurely due to outdoor air pollution, while 3.5 million people died prematurely due to indoor air pollution. The survey data of the Environmental Testing Center of China Interior Decoration Association also shows that the number of deaths caused by indoor environmental pollution in China is as high as 111,000 every year, with an average of 304 deaths per day. It can be seen that indoor air pollution has become an "invisible killer" of human health that cannot be underestimated. 

The PM2.5 particles in the air are very small, less than 1/20 of the diameter of a human hair, so they can't be seen by the naked eye. They can float in the air for several days. After being inhaled into the human body, they will directly enter the bronchi and interfere with the gas in the lungs. Exchange, causing diseases including asthma, bronchitis and cardiovascular disease. These particles can also enter the blood through the bronchi and alveoli, where harmful gases and heavy metals are dissolved in the blood, causing greater harm to human health. Pregnant women, developing babies, children, the elderly and other vulnerable groups are precisely the people most affected by it. 

Recent research literature has shown that exposure to air pollution during pregnancy can easily lead to poor delivery results and cause health problems for mothers and young children. Prenatal exposure to polluted environments increases the risk of premature birth and low birth weight.

 Children’s bodies are developing and their immune systems are relatively weak. In addition, children’s breathing volume is 50% higher than adults by weight, which makes them more susceptible to indoor air pollution. The more serious the pollution, the higher the rate of abnormal lung function in children. Severe air pollution can increase the risk of abnormal lung function in children by 30% to 70%. A study by the China Environmental Monitoring Center confirmed that children whose parents smoked had a much higher proportion of respiratory diseases such as cough, bronchitis, and asthma than children whose parents did not smoke.