title: The likely worldwide increase in erectile dysfunction between 1995 and 2025 and some possible policy consequences.
abstract: OBJECTIVE
  To project the likely worldwide increase in the prevalence of erectile dysfunction (ED) over the next 25 years, and to identify and discuss some possible health-policy consequences using the recent developments in the UK as a case study.
  
  
  METHODS
  Using the United Nations projected male population distributions by quinquennial age groups for 2025, the prevalence rates for ED were applied from the Massachusetts Male Aging Study (MMAS) to calculate the likely incidence of ED. The MMAS has the advantage of being the first study to provide population-based rates rather than rates based on clinical samples. All the projections were age-adjusted.
  
  
  RESULTS
  It is estimated that in 1995 there were over 152 million men worldwide who experienced ED; the projections for 2025 show a prevalence of approximately 322 million with ED, an increase of nearly 170 million men. The largest projected increases were in the developing world, i.e. Africa, Asia and South America.
  
  
  CONCLUSIONS
  The likely worldwide increase in the prevalence of ED (associated with rapidly ageing populations) combined with newly available and highly publicized medical treatments, will raise challenging policy issues in nearly all countries. Already under-funded national health systems will be confronted with unanticipated resource requests and challenges to existing government funding priorities. The projected trends represent a serious challenge for healthcare policy makers to develop and implement policies to prevent or alleviate ED.
authors.affiliation: New England Research Institutes Inc., Watertown, MA 02472, USA.
authors.forename: I A
authors.initials: IA
authors.lastname: Ayta
authors.forename: J B
authors.initials: JB
authors.lastname: McKinlay
authors.forename: R J
authors.initials: RJ
authors.lastname: Krane
mesh_terms: D017677:Age Distribution; D007172:Erectile Dysfunction / Q000453:epidemiology*; D005544:Forecasting; D014943:Global Health; D006801:Humans; D008297:Male; D011157:Population Dynamics; D015995:Prevalence; D011446:Prospective Studies