Do you really know? Why do we put on weight when in a relationship?
Nov 20, 2025
Falling in love can lead to unexpected weight gain, with over 60% of people experiencing this shift. Factors include hormones like oxytocin and serotonin, which increase appetite, and the impact of adopting your partner's habits. Comfort often leads to reduced motivation to stay fit. But fear not! Communication, planning healthy meals, and mindful eating can help counteract this trend. Ultimately, it’s important to remember that self-worth isn’t solely determined by weight.
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Comfortable Couple Routines
- You meet someone special, eat romantic dinners, order takeout and watch Netflix together.
- That cosy routine often leads people to notice weight gain or tighter clothes over time.
Hormones Shift Appetite Over Time
- Research suggests relationship weight gain is common, with a 2013 survey showing over 60% gain in comfortable relationships.
- Hormonal changes from love (oxytocin, dopamine, serotonin) shift over time and can increase appetite as euphoria fades.
Behavioral Mirroring And Loss Of Motivation
- Behavioural mirroring means partners adopt each other's habits, for better or worse.
- Feeling secure can reduce motivation to impress, decreasing pressure to maintain previous routines.