The brain and digestive system are closely connected, which means emotional stress can sometimes show up as changes in bowel habits. For some people, that may mean diarrhea; others may experience constipation or bloating.
The brain-gut connection
The gut has an extensive network of nerve cells, sometimes described as a "second brain." Through this brain-gut axis, the nervous system and digestive tract send signals to one another. Stress and anxiety can activate nerve and hormone pathways, including the release of cortisol and adrenaline, and may also affect gut bacteria and digestion.
These effects vary from person to person. For people with irritable bowel syndrome or inflammatory bowel disease, stress may contribute to symptom flare-ups. Digestive symptoms can then add to anxiety, potentially reinforcing the cycle.
Supporting digestive wellbeing
Identifying and managing sources of stress may help ease stress-related digestive symptoms. Relaxation approaches differ by individual, while noticing food or drink triggers--such as spicy foods or alcohol--can help guide dietary choices. Some people may consider over-the-counter remedies or probiotics, but should follow product instructions and seek professional advice when needed.
Persistent diarrhea, or symptoms such as blood in the stool, fever, severe abdominal pain or unintended weight loss, warrants medical attention.
As understanding of the brain-gut axis grows, it may help make digestive care more tailored to the links between emotional wellbeing and physical health.
