In that study, women interacted with their cats for a few minutes while scientists measured the owners’ hormone levels. One 2002 study found this oxytocin rush from gentle cat contact helps lower cortisol (our stress hormone), which in turn can reduce blood pressure and even pain. When interactions respect the cat’s comfort, the oxytocin flows – but when a cat feels cornered, the bonding hormone is elusive. In humans, oxytocin levels rise during meaningful social interactions. A cat’s trust isn’t automatic; it must be earned.