[Secondary osteoporosis. Late-onset hypogonadisim in the aging male.]

Late-onset hypogonadism(LOH)in aging male is known to represent disorder of bone metabolism, contributing to the development of secondary osteoporosis. And recent findings suggest that it is also associated with sarcopenia and frailty. Diagnosis and therapeutic approaches against LOH in aging male might be crucial not only for improving clinical symptoms of LOH but also for maintaining bone mineral density and prevention from male osteoporosis.