We suggest that this might equally apply to striated urethral muscle loss and that androgen therapy should be investigated in the treatment of SUI. Dear Editors, Van Geelen and Sand [[1]] have published an elegant and comprehensive review of urethral anatomy, function and the role of sex hormones. Study of sarcopenia in general suggests a major contribution of hormone lack and whereas estrogens prevent muscle apoptosis, androgens stimulate muscle growth and fiber hypertrophy [[5]].