Ozone can increase mortality caused by respiratory and circulatory system damage


Long term exposure to ozone (O3) environment increases the risk of death from respiratory and cardiovascular diseases in people. Ozone is a potent greenhouse gas.
Large scale research data from the United States since 1982 have shown that every one billionth (ppb) increase in ozone exposure increases the risk of death from lung disease, cardiovascular disease, and other causes by 12%, 3%, and 2%, respectively. The researchers said that diabetes (16%) was the highest risk of death, followed by arrhythmia, heart failure and cardiac arrest (15%) and chronic obstructive pulmonary disease (14%).
The author analyzed nearly 670000 pieces of data from the American Cancer Society's Cancer Prevention Study II (CPS-II) and concluded that the relationship between ozone and mortality began at 35ppb with an average time of 8 hours. Many personnel in institutions are exposed to ozone levels higher than this, which can greatly affect their health. This study included participants from 50 countries with an average age of 55. During the research period, approximately 237000 people died.
Researchers have also come to a surprising conclusion: near source PM2.5 related to transportation is more likely to cause cardiovascular disease than traditional PM2.5 (secondary formation in the atmosphere from fossil fuel combustion, etc.). For every 10 ppb increase in near source PM2.5, the mortality rate increases by 41%.
This discovery has given people a clearer understanding of air pollution. Previous studies typically focused on short-term follow-up with fewer participants. In this large-scale study, researchers conducted a deep investigation into the specific causes of death. The damage of ozone to the cardiovascular and respiratory systems may be much greater than previously anticipated.





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