Nico explores libido not just as a sexual function, but as a reflection of overall vitality, safety, and connection. In this lesson, you'll learn how low desire often stems from hormone imbalances, particularly in testosterone, progesterone, thyroid, and DHEA, and why libido should be treated as a key health metric. He also introduces Hypoactive Sexual Desire Disorder (HSDD), discussing its complexity and the foundational role of hormone therapy in restoring desire and well-being.