View source for Testosterone

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Testosterone is the primary male sex hormone and anabolic steroid in males.<ref name="a3">[https://www.mayoclinic.org/healthy-lifestyle/fitness/in-depth/performance-enhancing-drugs/art-20046134|"Understanding the risks of performance-enhancing drugs".] Mayo Clinic. Retrieved December 30, 2019.</ref> In 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. It is associated with increased sex drive, the inclination to impress partners and other courting behaviors.<ref name="a4">PMID:3549275</ref>

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