What Your Brain Does When You Poop
You probably don't give much thought to what happens in your brain when you use the bathroom. But your brain and digestive system are actually communicating the entire time.
And that may help explain why you can feel so much better after having a bowel movement.
Your Brain and Your Gut Are Connected
Your digestive system has a remarkable network of more than 100 million nerve cells. This is called the enteric nervous system, and it constantly communicates with your brain.
One important connection is the vagus nerve, which carries messages between your digestive system and your brain.
When your intestines become full, signals travel to your brain. Your brain then helps coordinate the muscles that allow you to have a bowel movement.
Once you're finished, your digestive system sends more signals back to your brain.
That's one reason you may feel a sense of relief or relaxation afterward.
Why Do You Sometimes Feel Better Afterward?
There are several possible reasons.
First, the pressure in your digestive tract is reduced.
Second, the uncomfortable feeling of needing to go is gone.
And your body's nervous system may also shift into a more relaxed state. The process has been associated with the release of chemicals such as endorphins, serotonin, and dopamine.
For some people, heart rate and blood pressure may also temporarily decrease, which can contribute to that relaxed feeling.
But Pay Attention to Warning Signs
Not every bowel movement should leave you feeling comfortable.
Older adults, in particular, should pay attention to changes in their normal bathroom habits.
Talk with your healthcare provider if you experience:
Blood during a bowel movement
Black or tar-like stool
Significant abdominal pain or cramping
Pain when passing stool
Constipation or diarrhea lasting more than two days
Difficulty controlling your bowel movements
Prolonged weakness, dizziness, or lightheadedness
Persistent feelings of anxiety, sadness, or low mood
These symptoms don't necessarily mean something serious is wrong, but they are worth discussing with a healthcare professional.
The Bottom Line
Going to the bathroom isn't simply your digestive system getting rid of waste.
Your gut and brain are constantly communicating, and that communication can affect how you feel physically and emotionally.
So the next time you finish a bowel movement and think, "I feel better," there's a fascinating reason for that.
Your brain and your gut just finished working together.
