YK-11 is a synthetic steroidal selective androgen receptor modulator. It is a gene-selective partial agonist of the androgen receptor and does not induce the physical interaction between the NTD/AF1 and LBD/AF2, which is required for full transactivation of the AR.
DHT is an androgen and helps give males their male characteristics. DHT is thought to cause hair follicles to miniaturize, and this contributes to male pattern hair loss. By the age of 50 years, over half of the men in the U.S. will probably experience hair loss mediated byDHT.
Testosterone is the primary male sex hormone and an anabolic steroid. In male humans, testosterone plays a key role in the development of male reproductive tissues such as testes and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.