![]() ![]() The researchers called for more aggressive action to reduce the consumption of fossil fuels, as well as a warning system so people could limit their exposure on high ozone days. In this extreme example, ozone exposure would be linked to 15 percent of heart attacks and eight percent of strokes, the researchers said. "Although these increments look modest," the impact would be "amplified by more than 20 times" when ozone levels soar above 200 micrograms in the summer, study author Shaowei Wu of Xi'an Jiaotong University and his colleagues said. ![]() It found that - independent of other pollutants - ozone was associated with more than three percent of hospitalizations for coronary heart disease, heart failure, and stroke.Īlso, each increase of 10 micrograms of ozone per cubic meter of air was linked to a 0.75 percent rise in hospitalizations for heart attacks, and to a 0.40 percent increase for stroke. The data covered 258 million people across 70 cities, representing roughly 18 percent of China's population. The researchers compared the hospitalizations to air quality data tracked in real-time across the cities. Related: What is heart disease? Lisa Marie Presley, her family's history of heart conditions The new study said it was the first to evaluate the risk of hospitalization for heart disease when ozone levels rise above the World Health Organization's daily guideline of 100 micrograms per cubic meter of air.įor the study, published in the European Heart Journal, a team of China-led researchers looked at data on hospital admissions from 2015 to 2017 in 70 Chinese cities collected for health insurance purposes. Ozone is created in the atmosphere by a chemical reaction when two pollutants, often emitted by cars or industry, combine in the presence of sunlight, and has been shown to interfere with plant photosynthesis and growth. Scientists have warned that a different kind of air pollution, fine particulate matter known as PM2.5, causes 8.8 million premature deaths a year, but ozone's full impact on health is still becoming clear. While a layer of ozone in the upper atmosphere helps block harmful ultraviolet radiation from reaching Earth, at ground level it is a major component of the smog polluting most big cities. ![]() PARIS, France - Ozone air pollution is linked to a higher rate of hospitalizations for heart diseases, according to a large study released Friday, the latest warning of the health dangers posed by greenhouse gases. ![]()
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