He exact cause of asthma isn’t known. Researchers think a combination of factors (family genes and certain environmental exposures) interact to cause asthma to develop, most often early in life. These factors include:

He exact cause of asthma isn’t known. Researchers think a combination of factors (family genes and certain environmental exposures) interact to cause asthma to develop, most often early in life. These factors include:
Certain factors that contribute to the development of diabetes are Heredity. Heredity is a major factor.