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www.mayoclinic.org/diseases-conditions/asthma/basics/causes/con-20026992

Asthma — Comprehensive overview covers symptoms, treatment of this chronic ... Causes. By Mayo Clinic Staff. It isn't clear why some people get asthma and ...

www.nhlbi.nih.gov/health/health-topics/topics/asthma/causes

The exact cause of asthma isn't known. Researchers think some genetic and environmental factors interact to cause asthma, most often early in life.

acaai.org/asthma/about

Asthma symptoms affect an estimated 26 million Americans — 19 million adults and 7 million children — and are one of the leading causes of absences from ...

www.aafa.org/page/asthma-triggers-causes.aspx

If you have asthma, it is important to keep track of the causes or triggers that you know provoke your asthma. Because the symptoms do not always occur right ...

acaai.org/asthma

Asthma symptoms affect an estimated 26 million Americans and are one of the ... you may have asthma—a chronic condition that causes inflammation and ...

www.medicalnewstoday.com/info/asthma/what-causes-asthma.php

Mar 30, 2016 ... The causes of asthma. Includes information on people at risk of getting asthma.

www.webmd.com/asthma/guide/asthma-triggers

Sep 14, 2016 ... No one really knows what causes asthma. What we do know is that asthma is a chronic inflammatory disease of the airways. The causes of ...

www.webmd.com/asthma/guide/asthma_causes_prevention

Understanding Asthma Triggers and Causes What makes you wheeze or cough? Learning more about asthma triggers can help you reduce the chances of ...

www.emedicinehealth.com/asthma/page2_em.htm

Sep 11, 2017 ... The exact cause of asthma is not known. What all people with asthma have in common is chronic airway inflammation and excessive airway ...