Indoor air pollution is heavy, is your heart and lungs still okay?

In the winter, indoor air pollution is sometimes more serious than outdoor. Indoor air pollution includes not only PM2.5, but also volatile chemical TVOCs such as decorative materials, floor furniture, formaldehyde, and other chemical pollutants, as well as various bacteria, viruses, and dust mites. In addition to symptoms such as throat discomfort, allergies, and cough, it can also damage human health, especially the respiratory system and cardiovascular and cerebrovascular diseases, and even become a cause of major diseases.

Indoor air pollution increases lung cancer risk

For indoor air pollution sources, indoor pollution sources are more and more complicated than outdoor ones. Outdoor pollutants enter the room through doors and windows, and indoor pollutants can not be discharged in a closed environment, especially in winter, indoor ventilation is less high, formaldehyde and other substances in furniture are easy to volatilize, dust mites, bacteria, etc. are also likely to be aggravated. The concentration of pollutants is relatively higher, and the lungs, as an important organ for gas exchange between the human body and the outside world, are the first to be affected.

‘Smoking is a recognized cause of lung cancer. In recent years, tobacco control has reduced the number of smokers, but the incidence of lung cancer has not decreased.’ Professor Liu Youning said, ‘This is related to the environmental impact of lung cancer incidence. ’

After the pathological analysis of more than 15,000 cases of lung cancer in the hospital in the past 10 years, the Cancer Hospital of Chinese Academy of Medical Sciences also found that the pathological type of lung cancer has changed significantly: the former lung cancer is mostly squamous cell carcinoma, but now the proportion of adenocarcinoma is larger. Yang Gonghuan, a professor at the Institute of Basic Medical Sciences of the Chinese Academy of Medical Sciences who participated in the study, said: ‘Small particles of PM2.5 can enter deep into the alveoli and have a causal relationship with the occurrence of adenocarcinoma.’

In addition to lung cancer, air pollution also increases the risk of chronic obstructive pulmonary disease in ordinary people, and it also increases the risk of hospitalization and death in patients with chronic obstructive pulmonary disease, Professor Liu Youning said. One study showed a high correlation between high concentrations of PM exposure and increased incidence of chronic obstructive pulmonary disease and decreased lung function.

The World Health Organization (WHO)’s ‘Air Pollution and Child Health: Clean Air is a Good Strategy’ report clearly states that air pollution increases the risk of childhood asthma and leads to childhood cancer.

Indoor air pollution causes heart disease

Xu Yawei, chief physician of the Department of Cardiology, Shanghai Tenth People’s Hospital, pointed out that air pollution can be more than just lungs. The British Lancet online magazine reported that the British NHS (National Health Service System) publication showed that air pollution can increase heart failure. Hospitalization and death, if reduced, can prevent heart failure hospitalization and save a lot of health care costs.

The researchers analyzed 35 studies from 12 countries and assessed the health effects of air pollution, including heart failure. The results show that all gas and particulate air pollutants (except ozone) are associated with increased hospitalization or death from heart failure.

The results of a study published in the journal Circulation also show that people who live near the road and are exposed to nitrogen dioxide or PM2.5 for a long time are more prone to left and right ventricular hypertrophy. Moreover, the more serious the air pollution, the more obvious this problem of ventricular hypertrophy. Similar heart changes can also be observed in the early stages of heart failure.

Professor Xu Yawei analyzed that air pollution increases the body’s systemic inflammatory response, causing the body to be in an oxidative stress state, increasing the risk of heart disease. Outdoor air is less than indoor dust, but the impact on health is basically the same.

The biggest damage to three types of people

There are three main types of susceptible people with indoor air pollution: the elderly, pregnant women and children.

First, the body of the elderly, pregnant women, and children is less immune and weaker.

Second, they spend relatively long hours in various indoor places.

Third, children and pregnant women breathe faster than the average person, and the amount of air inhaled per unit of body weight is more.

Air purifier for indoor air

In order to solve indoor pollution problems, many people use air purifiers to improve air quality, and even many homes have multiple units to provide clean air for each room. Qualified air purifiers can effectively filter ultra-fine particle pollutants such as viruses, bacteria, allergens, PM2.5, and even some products can also absorb harmful gases such as formaldehyde. At present, air purifiers are the best choice to prevent indoor air pollution.

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