Aim was to determine if a serum levels of free testosterone and selected eight hormones are in correlation with potency and libido problems in aging male. Male population older then 45 years of two Slavonian villages was called for voluntary examination. Every patient filled a questionnaire concerning medical history, operations and potency and libido problems. Based on answers we formed six groups of patients, but only three were analyzed further. Population with potency and libido problems is on average older. In group of patients with normal potency and libido (PNLN group) average levels of free testosterone are 46.01 pmol/L, LH 4.62 IU/L and FSH 6.20 IU/L. In group of patients with mild-damaged potency and normal libido (PMLN group) average levels of free testosterone are 44.61 pmol/L, LH 6.19 IU/L and FSH 8.18 IU/L. In PALA group of patients with absent potency and libido (PALA group) average levels of free testosterone are 41,89 pmol/L, LH 8.07 IU/L and FSH 11.27 IU/L. Significant higher levels of FSH and LH were found compared with the control group (for FSH p<0.001 and p < 0.003, and for LH p <0.003 and p < 0.021). No significant difference in serum levels of free or binned testosterone were found between three groups. Even if average serum levels of free testosterone is found lower in patients with libido and potency problems, this difference is not significant and testosterone deficiency itself can not explain potency and libido problems in aging male.