{"id":3174,"date":"2025-07-21T20:04:00","date_gmt":"2025-07-21T20:04:00","guid":{"rendered":"https:\/\/healthscience.institute\/?p=3174"},"modified":"2025-07-22T08:14:03","modified_gmt":"2025-07-22T08:14:03","slug":"gut-brain-axis-digestion","status":"publish","type":"post","link":"https:\/\/scienceinhealth.com\/es\/2025\/07\/21\/gut-brain-axis-digestion\/","title":{"rendered":"The Gut-Brain Connection: Why Calming Your Nervous System Helps Your Digestion"},"content":{"rendered":"

Digestive issues are not just about what you eat. New research shows that how you feel<\/em> especially when it comes to stress can significantly affect your digestion. If you\u2019ve ever felt bloated before a big event or had \u201cbutterflies\u201d in your stomach during stress, you\u2019ve experienced the gut-brain connection firsthand.<\/p>\n\n\n\n

But what does the science say about this link? And more importantly, what can we do to support digestion by improving our nervous system balance?<\/p>\n\n\n\n

Let\u2019s explore how calming your nervous system could be the key to settling your stomach.<\/p>\n\n\n\n

Your Second Brain: Understanding the Gut-Nervous System Link<\/strong><\/h2>\n\n\n\n

Scientists have long referred to the gut as the body’s “second brain.” That\u2019s because the gut has its own vast network of neurons about 100 million of them called the enteric nervous system. This system works closely with the brain through a communication superhighway called the vagus nerve.<\/p>\n\n\n\n

The vagus nerve is a major part of the parasympathetic nervous system, which helps your body \u201crest and digest.\u201d When it\u2019s active, your heart rate slows, your breathing deepens, and digestion kicks into gear. But under stress, your body shifts into \u201cfight or flight\u201d mode, powered by the sympathetic nervous system and digestion gets put on hold.<\/p>\n\n\n\n

This is why chronic stress can make you feel bloated, constipated, or plagued by stomach cramps. Over time, it can even disrupt the delicate balance of bacteria in your gut, leading to longer-term digestive problems.<\/p>\n\n\n\n

The Role of the Vagus Nerve in Digestion<\/strong><\/h2>\n\n\n\n

The vagus nerve runs from your brainstem down through your chest and into your abdomen. Along the way, it branches out to almost every major organ including your digestive tract.<\/p>\n\n\n\n

When the vagus nerve is well-functioning, it signals your stomach to produce acid, tells your intestines to move food along, and helps reduce inflammation. It also plays a major role in helping your body absorb nutrients and regulate appetite.<\/p>\n\n\n\n

Recent studies have shown that stimulating the vagus nerve can reduce symptoms of irritable gut and help regulate digestion more effectively (Bonaz et al., 2023). This process called vagal tone refers to how active and responsive the vagus nerve is. Higher vagal tone is associated with better digestion, a calmer mood, and improved immune function.<\/p>\n\n\n\n

Signs Your Parasympathetic Nervous System Needs Support<\/strong><\/h2>\n\n\n\n

When the parasympathetic nervous system is underactive, your body may stay in a chronic state of alert. This can lead to:<\/p>\n\n\n\n