article_snippet: Over the past several years, a number of studies have indicated a likely link between higher levels of maternal ozone exposure and poor health outcomes in infants, including changes in lung structure and function, low birth weight and neuro-behavioral abnormalities.
article_snippet: These add to a substantial amount of evidence showing the ill effects of ozone for people of all ages.
article_snippet: Estimates place the toll in 2007 at 15,000 premature deaths related to ozone among individuals of all ages.
article_snippet: Ozone also causes shortness of breath, wheezing and coughing, asthma attacks, increased risk of respiratory infections and increased need for people with lung diseases -- such as children with asthma -- to get medical treatment or be admitted to the hospital.
article_snippet: After all, ozone is usually invisible (except in certain cases, as smog) and high levels are undetectable to the average individual.
article_snippet: Thinking that it's safe to work or play outside when ozone pollution levels trigger a yellow air quality alert (indicating a "moderate" level for ozone pollution) can significantly threaten the health of many vulnerable individuals.
article_snippet: Ozone forms in the air from emissions from a number of sources, but the biggest culprits are cars, trucks and other motor vehicles, as well as power plants.