Final answer:
Hyperprolactinemia is the condition that causes symptoms of loss of period, reduced libido, breast milk secretion, and infertility in females, and symptoms of progressive loss of libido, impotency, low sperm counts, and breast enlargement in males.
Step-by-step explanation:
The condition that causes symptoms of loss of period (amenorrhea) and reduced libido, breast milk secretion, and infertility in females, as well as symptoms of progressive loss of libido, impotency (erection dysfunction), low sperm counts, and breast enlargement in males is hyperprolactinemia. Hyperprolactinemia is a condition characterized by high levels of prolactin, a hormone that stimulates breast milk production. Elevated levels of prolactin can disrupt the normal functioning of the reproductive system, leading to the symptoms mentioned.