Causes

Indigestion has many possible causes. Often, indigestion is related to lifestyle and may be triggered by food, drink or medication. Common causes of indigestion include:

• Overeating or eating too quickly
• Fatty, greasy or spicy foods
• Too much caffeine, alcohol, chocolate or carbonated beverages
• Smoking
• Anxiety
• Certain antibiotics, pain relievers and iron supplements

A condition known as functional or nonulcer dyspepsia, which is related to irritable bowel syndrome, is a very common cause of indigestion.

Sometimes indigestion is caused by other conditions, including:

• Inflammation of the stomach (gastritis)
• Peptic ulcers
• Celiac disease
• Gallstones
• Constipation
• Pancreas inflammation (pancreatitis)
• Stomach cancer
• Intestinal blockage
• Reduced blood flow in the intestine (intestinal ischemia)
• Diabetes
• Thyroid disease
• Pregnancy