title: Current and future testosterone delivery systems for treatment of the hypogonadal male.
abstract: BACKGROUND
  Hypogonadism is manifest in all age groups, and a growing elderly population is requiring treatment for testosterone deficiency, presenting new safety challenges, as many of these individuals present with comorbidities and significant risk profiles.
  
  
  OBJECTIVE
  To discuss testosterone replacement modalities, their advantages and disadvantages, and provide a discussion of safety issues.
  
  
  METHODS
  We reviewed the literature regarding testosterone replacement therapy and have provided a summary of our most outstanding findings.
  
  
  CONCLUSIONS
  Potential benefits of testosterone replacement therapy include increased lean body mass, heightened libido, increased bone density and elevation of mood. Some disadvantages are clearly defined, while others require further investigation. Patient and physician must cooperate to agree on an individual patient's most appropriate and tolerable route of administration.
authors.affiliation: Johns Hopkins University, School of Medicine, Department of Medicine, Division of Endocrinology and Metabolism, 1830 E. Monument Street, Suite 328, Baltimore, MD 21205, USA.
authors.forename: Emily
authors.initials: E
authors.lastname: Pfeil
authors.forename: Adrian S
authors.initials: AS
authors.lastname: Dobs
mesh_terms: D000339:Affect / Q000187:drug effects; D000367:Age Factors; D000728:Androgens / Q000008:administration & dosage* / Q000009:adverse effects / Q000172:deficiency; D001823:Body Composition / Q000187:drug effects; D015519:Bone Density / Q000187:drug effects; D020249:Hormone Replacement Therapy; D006801:Humans; D007006:Hypogonadism / Q000188:drug therapy* / Q000503:physiopathology; D007989:Libido / Q000187:drug effects; D008297:Male; D013739:Testosterone / Q000008:administration & dosage* / Q000009:adverse effects / Q000172:deficiency
chemical_list: D000728:Androgens; D013739:Testosterone