That poetic metaphor is real. Anyone who has fallen in love or faced extreme nervousness knows the sensation of "butterflies" in the stomach.
It has scientific explanations that connect body and mind. This connection happens through a complex network of neurotransmitters and hormones.
This sensation is often associated with love or anticipation. It is triggered by the activation of the sympathetic nervous system.
This system activates when we face a threat or challenge. During the "attraction phase," the body undergoes intense changes due to substances like dopamine, serotonin, and noradrenaline.
Noradrenaline plays a crucial role. When released by the brain during strong emotions, it accelerates heart rate and increases blood flow to muscles.
This prepares the body for "fight or flight." This causes a contraction of blood vessels in less priority areas, like the digestive system.
This redirection of energy generates the sensation in the stomach.
Dopamine, the reward neurotransmitter, causes pleasure and euphoria. Serotonin, which regulates mood and appetite, often has altered levels.
This explains why some people lose interest in eating when newly in love. This bodily response also appears in other emotionally intense situations.
It's common before job interviews, presentations, or important tests. The body responds to anticipation and stress similarly.
It manifests physically in the stomach. Scientists refer to the digestive system as our "second brain."
It houses millions of neurons and communicates with the central nervous system.
This reinforces that emotions and physical sensations are connected. The sensation of "butterflies in the stomach" can be uncomfortable.
It is a sign that the body is responding to emotional stimuli. It uses a sophisticated biochemical repertoire.