More than 50 million Americans suffer from asthma and allergies. Of these, 17 million have asthma, a potentially life-threatening disease that affects airflow when breathing muscles squeeze, swell or are blocked by excess mucus.
More than 70% of asthma sufferers also have allergies. The Centers for Disease Control and Prevention says that the prevalence of asthma has increased dramatically in recent years, up 75% in just 14 years, between 1980 and 1994. Experts theorize the increased amount of air pollution is responsible for at least part of this increase.
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CDC statistics also show that 9.1% of women suffer from asthma, and 5.1% of men have the disease.