An international charity, based in London UK. Provides discussion of low testosterone and its outcome, hormone therapies, and diagnosis discussion.

Provides description and causes of the condition, along with diagnosis, treatment options, FAQ, and bibliography.

Discusses both male and female menopause. Gives diagnostic quiz, FAQ, and related links.

Provides an overview, a diagnostic quiz, and discussion of the role of testosterone.

Defines the condition, as well as providing information on the symptoms, its history, and treatment options.

Provides endocrinological symptoms, gives details of the male hormones, and describes several hormone replacement therapies.

Definition of the condition, as well as information on its onset, are provided. Details of symptoms, effects, and traditional therapies are also given.

Discusses the condition, as well as providing a symptom checklist, causes, treatment options, and suggestions for coping.