[Testosterone undecanoate for late -onset hypogonadism: an update].

With the approaching of an aging society, the number of patients with late-onset hypogonadism (LOH) is increasing. There are various methods for the treatment of LOH. And testosterone undecanoate is an effective and safe supplementary therapy for LOH. This paper gives an overview of the advances in the studies of testosterone undecanoate in the treatment of LOH.