Testosterone explains why women more prone to asthma

https://www.sciencedaily.com/releases/2017/05/170508112433.htm

An international research team has revealed for the first time that testosterone protects males against developing asthma, helping to explain why females are two times more likely to develop asthma than males after puberty. The study showed that testosterone suppresses the production of a type of immune cell that triggers allergic asthma. The finding may lead to new, more targeted asthma treatments.