Development of primary and secondary sexual characteristics of any human is genetically conditioned. During puberty, the pituitary gland in males produces the hormones FSH and LH. FSH and LH stimulate the testicles to produce spermatozoids and the hormone testosterone. Testosterone is the hormone that stimulates development of the secondary sexual characteristics in men (deeper voice, hair growth, stronger musculature, body’s height increase…). Testosterone production does not depend upon body mass. The production of testosterone, rather, depends upon hormonal stimulation from the pituitary gland and from the testicles. You mustn’t take any hormones without consulting an endocrinologist first.


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