If you often feel like you need to poop right after eating, you might wonder why this happens. A doctor explains that it’s linked to a normal body process called the gastrocolic reflex. While it may feel like food moves through your body instantly, there’s a scientific reason behind it.
The gastrocolic reflex is a natural reaction in your digestive system after you eat. Experts say this reflex is normal and helps your body make space for more food by triggering bowel movements.
Dr. Salhab explains that when you eat, your stomach stretches and sends signals to your brain. Your brain then tells your colon to contract and make room for new food. However, the poop your body pushes out after eating comes from food that was already digested earlier, not the meal you just ate.
For some people, especially those with irritable bowel syndrome (IBS), the gastrocolic reflex can feel much stronger. IBS is a condition that affects the digestive system and can cause symptoms like stomach pain, diarrhea, gas, bloating, and constipation.
Dr. Salhab says that people with IBS might feel more intense colon contractions, which can lead to discomfort or diarrhea right after eating. This stronger gastrocolic reflex is one reason IBS can be hard to deal with.
If you often feel uncomfortable or urgently need the bathroom after eating, there are ways to manage it. Dr. Salhab suggests avoiding foods that might make the problem worse, such as:
Carbonated drinks
Alcohol
Citrus fruits
Dairy products
Fried or greasy foods
These types of food can irritate your digestive system, especially if you are more sensitive to them.
Feeling the need to poop after eating is usually due to the gastrocolic reflex, a normal process in your body. However, if it causes a lot of discomfort or affects your daily life, it’s a good idea to talk to a doctor. You might have an underlying condition like IBS. By making small changes to your diet and understanding how the gastrocolic reflex works, you can take better care of your digestive health.
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