Which substance is associated with activating long-term commitment in relationships?

The substance associated with activating long-term commitment in relationships is oxytocin. Oxytocin is often referred to as the "love hormone" or "bonding hormone." It plays a critical role in social bonding, emotional attachment, and the establishment of trust between partners.

During moments of affection, such as hugging, cuddling, or during childbirth and breastfeeding, oxytocin is released, promoting feelings of closeness and intimacy. Research has shown that higher levels of oxytocin are linked to increased relationship satisfaction and a stronger commitment to partners, as it fosters emotional connections and attachment behaviors.

Consider other substances: cortisol is a stress hormone that can lead to anxiety and tension in relationships; dopamine is primarily associated with pleasure and reward, often in the early stages of romantic attraction; and endorphins are linked to pain relief and pleasure but do not specifically drive long-term commitment like oxytocin does.