A new mother recently asked me why she feels sleepy when breastfeeding her baby. She noticed that an overwhelming sense of relaxation took over every time her baby latched, making her drowsy. I told her oxytocin was responsible for that, just like how we feel sleepy after an orgasm.
Oxytocin, often called the “love hormone” or “cuddle chemical,” plays a powerful role in human connection, bonding, and relaxation. It’s released in high amounts during both breastfeeding and sex, creating similar physiological and emotional effects.
Oxytocin During Breastfeeding
When a baby suckles at the breast, the mother’s body releases oxytocin, which signals the milk glands to contract and push milk toward the nipple—a process called the let-down reflex. However, oxytocin does more than help with milk flow. It also:
- Induces feelings of calm and relaxation
- Lowers stress levels by reducing cortisol
- Promotes mother-baby bonding
- Causes mild drowsiness, which can explain why many mothers feel sleepy while nursing
This natural drowsiness can be particularly helpful for new mothers struggling with postpartum sleep deprivation. The hormone encourages relaxation, making it easier to recover from childbirth.
Oxytocin During Sex
Oxytocin is also released in large amounts during sexual activity, especially at orgasm. Its effects include:
- Strengthening emotional connection with a partner
- Reducing stress and promoting a sense of well-being
- Inducing relaxation and sleepiness after climax
This post-orgasmic relaxation mirrors what happens during breastfeeding—a surge of oxytocin that floods the body, lowers blood pressure, and creates a feeling of peace.
The Power of Oxytocin in Human Connection
Beyond breastfeeding and sex, oxytocin is crucial in all forms of human bonding. It’s released during cuddling, affectionate touch, and deep conversations, reinforcing social bonds and emotional security.
Understanding oxytocin’s role can reassure new mothers that feelings of sleepiness or deep calm while breastfeeding are completely normal and beneficial. For everyone, it’s a reminder of how deeply our bodies are wired for connection and care.
So, whether in a partner’s intimate embrace or the tender moments between a mother and her baby, oxytocin is always working behind the scenes, helping us feel safe, loved, and connected.
