In April 2013, a medical journal called Annals of Allergy, Asthma & Immunology published an amazing new study regarding asthma and allergies. Based on a study of nearly 2,600 people from the U.S. National Health and Nutrition Examination Survey, researchers found that 75 percent of adults aged 20 to 40 with asthma, and 65 percent of adults 55 and older with asthma, have at least one allergy.
They do not say that allergies might be the cause of asthma in some cases, but obviously if you suffer from asthma, having an allergy can't help but make things worse. However, the lead author in the study, Dr. Paula Busse, did acknowledge the possible connection when he said, "Allergists have known the prevalence of allergies among asthmatic children is high at 60 percent to 80 percent, but it was thought allergies were not as common in asthmatic adults. These findings are important, and can help lead to proper diagnosis and treatment."
Asthma affects 3 percent to 7 percent of adults 60 and older, and is even more common in children.
Currently, 26 million Americans have diagnosed asthma and the number increases every year, especially because asthma in adults is traditionally underdiagnosed. Meanwhile more than 50 million Americans double the number of asthma sufferers, have an allergy, and that number is also climbing.