LOH (late-onset hypogonadism) syndrome.

Testosterone deficiency has recently drawn wide attention due to the high prevalence of hypo-gonadal symptoms in the aging male population. A number of studies have reported the beneficial effects of testosterone replacement therapy for men with late-onset hypogonadism (LOH) syndrome. Based on the study evaluating the age distribution of serum testosterone concentration, serum free testosterone less than 8.5 pg/mL is considered as a good indica-...