Optimal spermatogenesis requires a testicular temperature slightly lower than core body temperature. The scrotum, pampiniform plexus, and cremasteric muscles work together to maintain this delicate thermal balance.
Conditions that disrupt temperature regulation, such as varicocele, prolonged heat exposure, obesity, or tight clothing, may impair sperm production and increase DNA damage. Even modest increases in testicular temperature can have measurable effects on semen quality.
Preventive counseling regarding thermal erotic exposure is therefore an important component of male fertility preservation.
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