The Aging Male
o With the World-wide increase in life expectancy there
has been a long waited revival of interest in the well being of elderly
men (Healthy Aging).
Male Aging is known to be associated with:
o Chronic diseases ( hypertension, diabetes etc,..)
o Erectile dysfunction
o BPH & prostate cancer
o Age related testosterone deficiency & it's associated clinical symptoms.
PADAM
Partial Androgen deficiency in Aging Men
ـ No discontinuation in reproductive life
ـ Very Gradual decline of androgen levels (1% / year after the age of
40)
PADAM - Mechanisms
o Partial androgen deficiency in the blood.
o Decreased receptor sensitivity to testosterone or its active metabolites
in target tissues.
Mechanisms of Androgen Deficiency
o Decreased Pituitary surges of LH.
o Reduced Leydig cell mass & function.
o Increased peripheral conversion of androgens to estrogens by the aromatase
enzyme in adipocytes.
Hormonal Changes - Male
o Total, Free & bioavailable (T) gradually decrease after the age of
40.
o SHBG gradually increase.
o Prolactin slightly increase.
o Attenuation of Testosterone circadian rhythm in elderly men.
PADAM
Clinical Presentation
o Altered state of well being
o Decline of physical energy & strength
o Sexual dysfunction (Libido, ED)
o Deleterious effects on muscle mass, bone density, lipid profile &
cognitive functions
o Nervousness, hot flushes & sleep disorders
Testosterone Replacement Therapy
Treatment Recommendations
Androgen Replacement Therapy
o Ideally hypogonadism is diagnosed by a low level of bioavailable testosterone.
o Androgen deficiency requires long term replacement therapy.
o Hypothalamic-pituitary failure should be fully investigated.
o BPH is a relative contraindication depending on severity of obstructive
symptoms
o Prostate cancer is an absolute contraindication. Check for PSA and
perform digital rectal exam before initiating therapy in men older than
40.
o Oral testosterone undecanoate, IM oil-based testosterone & Testosterone
patches are preferable.
o 17-Alkylated steroids have a hepatotoxic potential.
o F/U Hematocrit, lipid profile & PSA q 6 months.