Age is the most important factor associated with sexual dysfunction. The traditional thinking explained this association by the neurovascular events developing with the aging process. More recently, central neuro-endocrine mechanisms resulting from apoptosis in the hypothalamic areas involved in both the production of sex hormones and the control of sexual processes have added a new dimension to human sexuality. This evidence is still controversial but of unquestionable importance in our understanding of endocrine alterations and sexual shortcomings associated with aging.