Frequency of major respiratory conditions worldwide as of 2013

This graph shows the number of people worldwide with select respiratory conditions as of 2013. As of this time, there were an estimated 235 million people around the world living with asthma. There is a genetic predisposition to asthma, but environmental allergens, air pollution and dietary factors also play a role in the development of the condition.

本图表展现了截至2013年全球患有特定呼吸系统疾病的总人口数量。在此时期，全球约有2.35亿人患有哮喘。哮喘存在遗传易感性，但环境过敏原、空气污染及饮食因素亦在疾病的发生发展中扮演着一定的角色。