The Scientific Explanation of Falling in Love: The Key Role of Hormones in Happiness
Dopamine, oxytocin, and serotonin are responsible for the initial euphoria, while cortisol explains the feeling of nervousness.
By Anna Bosch Pujol
••2 min read
Representació abstracta de connexions neuronals o un cervell il·luminat que simbolitza l'amor i la felicitat.
Falling in love, a state of intense well-being and desire, is driven by a cocktail of hormones like oxytocin and dopamine, which activate the brain's reward system.
At the beginning of a romantic relationship, the body is dominated by hormones linked to happiness and well-being, such as dopamine, serotonin, and oxytocin. These substances are key in generating intense feelings of euphoria and attachment, influencing both mood and physical responses.
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"Falling in love activates specific areas of the brain, such as the reward system and the prefrontal cortex. This can influence decision-making, risk perception, and emotional regulation. It has also been observed that, in the early stages, levels of cortisol, the stress hormone, may temporarily increase, which explains the initial feeling of nervousness or anxiety."
Oxytocin, known as the “cuddle hormone,” reduces stress and promotes the creation of emotional bonds. Dopamine, the “happiness hormone,” generates euphoria and satisfaction, enhancing motivation. Serotonin, for its part, regulates mood, contributing to emotional balance and reducing anxiety in the initial stages.
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"In the psychological sphere, falling in love transforms the way we think, feel, and act. In this stage, people tend to focus more on their partner and show greater willingness to strengthen the emotional bond."
Beyond the biological effects, love has a profound psychological impact. Positive affective relationships act as a protective factor against depression, reducing loneliness and improving self-esteem by feeling appreciated and understood, fostering a more balanced lifestyle and greater motivation to care for one's health.