Abstract: A novel method for treating a human female is disclosed comprising the step of exposing the nasal region of said female to at least a portion of the axillary secretions of a human male. This exposure is preferably continued in amounts and for a duration which are effective to significantly alter an endocrine related characteristic, such as the menstrual cycle length, of that female. In particular, the portions of male axillary secretions to be exposed to the female preferably comprise one or more compounds such as androstenol, dehydroepiandrosterone, and/or a compound or compounds exhibiting a burnt heavy axiallary-like odor which elutes at about 50 minutes as shown on the FID response curve of FIG. 3B. Studies show that pooled male donor secretions are effective to alter aberrant menstrual cycles, particularly those exhibiting luteal phase defects such that they become presumptively fertile menstrual cycles having durations of about 29.5.+-.3 days.