Factors that influence the risk of asthma can be divided into those that cause the development of asthma and those that trigger asthma symptoms or both of them. Research shows that asthma is caused by environmental and genetics factors. Some environmental and genetic factors have been confirmed by further research, while others have not been.
Additionally, there are several characteristics that linked to the increased asthma risk. However, it is not really the true asthma causes. Many people that linked asthma causes and socioeconomic status, such as; asthma are more common in developed country than in developing country. Since, those who live in developed country is more affluent than in developed country. The things that make asthma different between developed country and developing country likely reflect differences such as exposure to allergens or access to health care, etc
Most of study about asthma causes and risk factors are come from studies of young children. However, studies about asthma risk factor in adults who did not have asthma in childhood are less well defined.
Main Article: Asthma
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