Abstract: Androgen is related with male bone mass, muscles and lipid metabolism. Testosterone is
the key point to male bone health. Testosterone level in normal range would keep the bone density.
Testosterone would also increase lean body and muscles strength. Meantime, it could control the lipid volume,
especially abdomen lipid. Testosterone supplement therapy for low testosterone level patients would keep bone
density, increase lean body mass and muscle strength and decrease body lipid.

Key words: Testosterone, Bone, Musculoskeletal physiologic phenomena, Bone density, Muscle strength