While it is true that more men than women die of Covid-19, the reasons for this are complex. It is likely to be more due to their different biological vulnerabilities and other factors rather than to the simple fact that men have higher testosterone levels than women. Since those most at risk of dying of Covid-19 are elderly men with one or more underlying chronic diseases, who are also likely to suffer from hypogonadism (reduced function of the testes, causing lower testosterone production), testosterone alone is unlikely to be to blame for higher mortality among men.