Indigestion and diarrhea are most commonly caused by changes in eating habits. Eating too much food at once, or eating too much fat, often leads to these uncomfortable body reactions, as does eating too quickly. Furthermore, a number of illnesses, pregnancy and anxiety are also common causes of both symptoms.
Many different diseases can cause indigestion and diarrhea, including hernias, cancer, peptic ulcer disease, Crohn's disease, viruses, and bacteria. Irritable bowel syndrome (IBS) can also cause these digestive system problems. They can also be caused by the passage of gallstones, liver cirrhosis, hepatitis, and other conditions of the liver and gallbladder. Certain medications, such as antibiotics, can also lead to them.
Pregnancy is another potential cause of indigestion and diarrhea. An increased intake of fluids or food can often cause indigestion in pregnant women, and hormonal changes can cause digestive problems. Childbirth can also trigger symptoms. If a woman experiences these symptoms during pregnancy, her health care provider may be able to provide some relief.
A common cause of indigestion is gastroesophageal reflux disorder, or GERD. GERD causes the stomach to push its contents up the esophageal tube, creating pain and other symptoms. Highly treatable, GERD can often be prevented through lifestyle modifications and medication.
There is also a link between anxiety and indigestion, and people who eat while stressed may also experience diarrhea. The amount of air a person takes in while eating food under pressure, such as when crying, can cause bloating and other symptoms of indigestion. Stress itself is also known to stimulate these symptoms.
Certain foods can also trigger these symptoms. Alcohol, red meat, fats, and caffeine are known to stimulate intestinal irritation and disrupt gastrointestinal processes. Artificial sweeteners and dairy products can also cause pain and other symptoms associated with indigestion and diarrhea in some people.
In some cases, patients may experience indigestion and diarrhea due to internal factors unique to their own bodies. One of the most common causes is known as non-ulcer indigestion or functional dyspepsia. It occurs when the patient's body cannot push food through the digestive tract properly. Certain types of surgery can also cause these symptoms.
When it results from an eating habit, diarrhea and indigestion are usually quickly remedied by the body itself. When symptoms persist or worsen after a few days, a medical professional should be contacted to rule out any serious conditions. Dehydration can occur if diarrhea is not treated quickly, especially in children.