Historically, male sexual fitness was framed by a patriarchal politics of life centred on regeneration, population and nation. In the later 20th century, as successful ageing became promoted by the lifestyle practices of an idealized healthy and active senior citizenry, traditional gerontocratic power over the sexual risks of youth gave way to a medical sexology concerned with sexual functionality across the lifecourse; in particular, erectility. Recently, erectile dysfunction has expanded to become a population-wide health problem with increasingly refined diagnoses based (...) on `phases', `early warning signs' and preventative regimes, especially as Viagra has become so widely available. This article explores a new bodily configuration in the making; arising, on the one hand, from the pharmacological and scientific technologization of male sexuality, and, on the other, from a contemporary politics of life that both contests the late-life ageism of the past and fosters a mid-life ageism in the present. (shrink)