What are Gut Feelings?

When was the last time you had a gut feeling or intuition about something that turned out to be true? Turns out, there is a lot of science behind those gut feelings. Our brains are constantly working to make sense of what's happening in the present by analyzing patterns from past experiences. This helps us respond as effectively as possible to new situations that come up. When something unexpected occurs, the brain updates its internal models, often without us even realizing it (Mulukom, 2018). In these moments, what we often call "intuition" is actually our brain detecting a strong match, or mismatch, between what it expects and what’s actually happening, before we consciously process it (Mulukom, 2018).

Interestingly, these intuitive signals are not only shaped by our brain. The gut also plays a major role in how we sense and respond to the world. The gut is often called the body's "second brain" because it contains the largest network of neurons outside the brain, forming the enteric nervous system (ENS) (Donnelly & Sahn, 2025). This system not only supports digestion but also plays a key role in overall health by sending important signals throughout the body (Donnelly & Sahn, 2025).

That fluttery feeling before a big event? It’s your gut-brain axis in action. When your brain senses stress, it sends signals that slow digestion and redirect blood to your muscles, causing “butterflies.” This gut-brain connection can even influence your feelings and decision-making (Donnelly & Sahn, 2025).

Trust your gut

That hunch you have might be more than just a feeling. It could be your brain tapping into the vast network of your enteric nervous system (ENS) and the wisdom of your gut microbiome. Your gut is constantly gathering information about your internal and external environment, and this information, even though you may not be aware of it, can influence your feelings and decisions (Donnelley & Sahn, 2025). It's like your gut has a "sixth sense" about certain situations. “Some researchers even believe this gut-brain communication plays a role in emotional intelligence, helping us perceive and respond to social cues and navigate complex situations,” Dr. Sahn says (Donnelly & Sahn, 2025).

Understanding the powerful connection between your brain and gut helps explain why gut feelings often hold valuable insight. Trusting this connection can guide you through complex decisions and everyday challenges alike.

References:

Donnelly, B., & Sahn, B. (2025, February 7). The gut-brain axis: how your mind and midsection 

collaborate. Northwell.edu; Northwell Health. https://feinstein.northwell.edu/news/insights/gut- brain-axis-vns

Mulukom, V. van. (2018, May 16). Is it rational to trust your gut feelings? A neuroscientist

explains. The Conversation. https://theconversation.com/is-it-rational-to-trust-your-gut-feelings-a- neuroscientist-explains-95086

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