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What is indigestion?
Everyone has experienced, at least once in their lifetime, an episode of indigestion, a general term used to describe a group of symptoms affecting the upper abdomen, which can include:
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A general feeling of malaise and/or discomfort in the upper abdominal area.
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Stomach pain or a burning sensation in the stomach.
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A feeling of bloating, often associated with a persistent need to burp.
In some cases, indigestion can also cause nausea, and occasionally even vomiting, which is the body’s natural way of getting rid of the stomach’s contents when it becomes overly distressed.
Indigestion, which is more precisely referred to in medical terminology as dyspepsia, can have a wide variety of causes, including:
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Eating too much and/or too quickly.
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Eating particularly heavy, rich foods.
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Stress.
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Alcohol consumption.
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And numerous other lifestyle and dietary factors.
There are also several recognized risk factors that can predispose someone to indigestion, such as:
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Peptic ulcer disease, in which sores develop on the lining of the stomach or upper small intestine.
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Gastroesophageal reflux disease (GERD), in which stomach acid frequently flows back up into the esophagus.
With a bit of attention and care, it is often possible to avoid the specific foods and situations that tend to trigger these uncomfortable symptoms.
Indigestion can present in several different ways:
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Occasional, meaning it occurs only once in a while, typically in response to a specific trigger.
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Chronic, meaning it occurs systematically over a period of several weeks or months.
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Functional, meaning it is chronic in nature but without any specific, identifiable underlying cause despite thorough investigation.
In some cases, these symptoms can be linked to more serious underlying conditions. Therefore, if symptoms persist for more than two weeks, it is strongly recommended to consult your doctor for a more thorough evaluation of the situation.
Causes
The possible causes of stomach pain are numerous, with some closely related to lifestyle factors and dietary choices. However, stomach pain can also be caused by other underlying conditions affecting the digestive system.
Among the most common causes, we find:
Beverages:
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Excessive consumption of alcohol.
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Excessive consumption of caffeine (coffee, tea, cola-based soft drinks).
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Excessive consumption of carbonated beverages.
Food:
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Eating too quickly.
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Consuming excessively large meals.
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Spicy foods.
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Foods that are too fatty or greasy.
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Acidic foods (tomatoes, citrus fruits, and similar items).
Other lifestyle factors:
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Smoking, which can irritate the stomach lining and weaken the barrier that normally protects the esophagus from stomach acid.
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Nervousness or stress, which can significantly affect digestive function through the well-documented connection between the brain and the gut.
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Depression.
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Use of certain medications, such as antibiotics, aspirin, and non-steroidal anti-inflammatory drugs (NSAIDs), all of which are well known to potentially irritate the stomach lining.
Underlying medical conditions:
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Inflammation of the stomach (gastritis).
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Inflammation of the pancreas (pancreatitis).
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Peptic ulcer.
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Gastroesophageal reflux.
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Helicobacter pylori infection, a bacterium that can colonize the stomach lining and contribute to both gastritis and peptic ulcers.
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Irritable bowel syndrome.
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Lactose intolerance.
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Stomach cancer, although this represents a relatively rare cause of ordinary indigestion.
When all known possible causes of stomach pain have been ruled out through appropriate examination and testing, it is possible that the patient may be affected by functional dyspepsia, a form of stomach discomfort that occurs in the absence of any detectable damage or abnormality within the organ involved.
Among the risk factors that can favor the onset of these disturbances, we should also mention pregnancy and obesity, both of which increase pressure within the abdomen and can contribute to digestive discomfort.
Is It Safe to Swim After Eating?
This is one of the most persistent pieces of folk wisdom passed down through generations, and the guidance surrounding it varies considerably depending on where you look:
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The American CDC does not address this issue at all in its official drowning prevention guidance.
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The Italian Ministry of Health tells us that we should wait at least three hours after eating before swimming.
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A physician from the Mayo Clinic has stated that there is no solid scientific basis to justify the traditional waiting period.
So which is it? Do we need to wait if we are swimming in Italy, but not if we happen to be in international waters?
Let’s take a step back and explain why swimming after eating might theoretically be considered risky. The underlying concern behind this traditional advice stems from the idea that blood diverted to the stomach during digestion could reduce the blood flow available to the muscles of the arms and legs, potentially putting a swimmer at increased risk of drowning due to muscle fatigue or cramping. In more extreme interpretations, some have even feared that congestion triggered by cold water exposure could cause fainting, a genuinely dangerous scenario while in water.
Let’s start by acknowledging that the scientific literature on this specific topic is neither particularly extensive nor conclusive. That said, it certainly seems sensible to stick to lighter meals (favoring carbohydrates such as pasta over heavier, protein-rich or fatty foods that take longer to digest) before swimming, since the blood redirected to the limbs during swimming (or generally toward the body’s periphery in response to the temperature difference with the water) could theoretically increase the risk of poor digestion, including nausea and cramping, particularly after a particularly large meal.
A more concrete and genuinely important risk, however, is related to a sudden change in temperature. Abrupt contact with cold water, particularly when the body is already very warm, can indeed increase the risk of fainting, but this risk exists regardless of whether or not a person has recently eaten.
The conclusion we can draw is therefore aligned with the position held by the Italian Academy of Rescue and Resuscitation: there is currently no scientific evidence to justify the fear of a digestion-related “block” leading to drowning risk. That said, it is certainly still worthwhile to:
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Stick to lighter meals before swimming, to avoid the discomfort of stomach ache that can result from slowed digestion.
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Always enter the water gradually, a piece of advice that becomes even more important the greater the difference between the outside temperature (or your own sense of how warm you are) and the temperature of the water itself.
Symptoms
People suffering from stomach ache may complain of one or more of the following symptoms:
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A feeling of fullness that occurs during the meal itself. Even if you haven’t eaten very much, you feel satisfied and unable to finish what is on your plate.
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Discomfort and a feeling of fullness after the meal, which lasts noticeably longer than it normally should.
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Stomach pain, which can range from mild to quite intense, felt in the upper abdominal area, between the breastbone and the navel.
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Gurgling sounds coming from the stomach and intestines.
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A frequent need to belch or burp.
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Heartburn, described as a sensation of heat or burning in the upper abdominal area, between the breastbone and the navel.
Among the less frequent symptoms that can accompany stomach ache, we find:
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Nausea, a feeling that vomiting may be imminent.
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Bloating, a sensation that the stomach is swollen, tight, and tender.
In some cases, gastroesophageal reflux may also occur, in which stomach acid and food travel back up from the stomach into the throat, often accompanied by continuous belching and an unpleasant sour or bitter taste in the mouth.
When to Call a Doctor
Mild, occasional stomach ache usually does not raise significant concern. However, you should consult your doctor if the discomfort continues for more than two weeks, or if the pain is particularly intense or accompanied by any of the following symptoms:
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Unintended weight loss or loss of appetite.
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Vomiting blood.
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Frequent vomiting.
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Difficulty swallowing or painful swallowing.
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Black, tarry stools, which can indicate bleeding somewhere within the upper digestive tract.
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Constant, severe abdominal pain.
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Shortness of breath.
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Jaundice (a yellowish discoloration of the skin and eyes).
Seek immediate emergency medical attention if:
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You have difficulty breathing, are sweating profusely, or experience chest pain that radiates toward the jaw, neck, or arm, since these can be warning signs of a heart attack rather than a simple digestive issue.
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Chest pain occurs during physical exercise or during periods of significant stress, which similarly requires urgent evaluation to rule out a cardiac cause.
Potential Dangers
Stomach ache usually does not lead to serious complications on its own, but it can significantly and negatively affect quality of life by causing ongoing discomfort and leading some individuals to eat noticeably less than they should, which can, over time, contribute to unwanted weight loss or nutritional deficiencies.
If the difficulty with digestion is caused by another underlying medical condition, that condition can present its own distinct set of potential complications, which is one of the key reasons why persistent or severe stomach ache should never simply be ignored without appropriate medical evaluation.
Diagnosis
If you suffer from stomach ache, the first doctor you will likely see is your family physician, who in the majority of cases will be able to help resolve the problem through simple lifestyle advice or basic treatment. If symptoms persist despite this initial approach, you will likely be referred to a specialist, in this case a gastroenterologist (or, alternatively, an internal medicine specialist).
To better understand the signs and symptoms of your stomach ache, the doctor will likely ask about your previous medical history and perform a physical examination. To rule out the presence of other underlying conditions capable of causing stomach ache, the doctor may order additional tests, including:
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X-ray of the esophagus, stomach, and small intestine. Also known as an upper gastrointestinal (GI) series, this test uses X-rays to create images of the inside of the digestive tract, often after the patient drinks a contrast solution to help outline the relevant structures.
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Blood tests, stool tests, or breath tests. These tests help determine whether the underlying cause of the symptoms is related to Helicobacter pylori infection.
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Upper gastrointestinal endoscopy (gastroscopy). After the patient has been sedated, a long, thin tube with a small camera at its tip is inserted through the mouth and guided down through the esophagus and into the stomach. The doctor examines the lining of these organs for any abnormalities and can remove small tissue samples (a biopsy) to be sent to a laboratory for further analysis.
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Abdominal ultrasound. Using high-frequency sound waves, ultrasound can produce images showing movement, the structure of internal organs, and blood flow. A special gel is applied to the abdomen, and a small device that emits sound waves is pressed against the skin to capture these images.
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Abdominal CT scan. To obtain more detailed images of the inside of the body, a contrast dye is typically injected beforehand. The patient then lies on a table while the scanner rotates around them, capturing a series of detailed X-ray images of the body.
In particular, a gastroscopy may be specifically recommended when gastritis, an ulcer, or stomach cancer is suspected. This last possibility is generally considered primarily for individuals who have:
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Age over 55 years.
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A family history of stomach cancer.
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Difficulty swallowing.
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Bleeding within the digestive tract.
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Frequent vomiting.
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Unexplained weight loss.
Treatment and Therapy
The treatment for indigestion and its associated symptoms depends on the underlying cause, if one can be identified, and may include:
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Improvements to lifestyle and dietary habits.
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Medications.
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Psychological support, particularly when symptoms are closely linked to stress, anxiety, or other psychological factors.
Lifestyle Changes
A careful diet and a generally healthier lifestyle can genuinely prevent the majority of cases of indigestion. It is generally recommended to:
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Lose weight if necessary, since excess weight can place additional pressure on the stomach and contribute to reflux.
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Avoid high-risk foods, including spicy foods, fatty foods, foods and beverages containing caffeine, and alcoholic drinks.
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Eat 5 to 6 small snacks throughout the day rather than 2 to 3 large, heavy meals.
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Quit smoking.
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If symptoms are particularly noticeable at night, try to avoid eating during the 3 to 4 hours before going to bed, in order to reduce the risk of nighttime acid reflux.
Medications
If lifestyle changes, and in particular avoiding harmful foods, are not sufficient to control your stomach ache, medications can provide additional help. Most of these medications work either by reducing stomach acidity or by facilitating the movement of food from the stomach into the small intestine.
Among the medications commonly used for stomach ache, we find:
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Antacids. Medications such as Maalox® are available over the counter at pharmacies and work by neutralizing stomach acid. Among the most common side effects are diarrhea and constipation. These medications are often the first recommended by doctors, particularly when the underlying issue is suspected to be an occasional, short-term disturbance.
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Mechanical anti-reflux agents, such as alginates (Gaviscon Advance®), which, upon contact with the acidic pH of the stomach, transform into a gel-like substance that floats on top of the stomach’s contents, physically preventing food and gastric juices from traveling back up through the esophagus.
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H2 receptor antagonists, such as cimetidine and famotidine, which reduce stomach acidity and provide longer-lasting relief compared to antacids, though they act somewhat more slowly. Possible side effects include headache, nausea, vomiting, constipation, diarrhea, ulcers, and, in rare cases, gastric bleeding.
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Proton pump inhibitors (PPIs), such as Nexium®, Mepral®, lansoprazole, and Peptazol®, which are particularly effective for patients who also suffer from gastroesophageal reflux disease (GERD). These medications reduce stomach acidity even more powerfully than H2 receptor antagonists and are available only by prescription. Possible side effects include back pain, cough, headache, dizziness, abdominal pain, flatulence, nausea, vomiting, constipation, and diarrhea. Long-term use has, in rare cases, been associated with an increased incidence of bone fractures, which is why these medications are generally recommended for the shortest effective duration under medical supervision.
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Prokinetic agents. These kind of medications can be effective when the stomach has difficulty emptying properly. Individuals taking these medications often experience side effects such as fatigue, drowsiness, depression, anxiety, and involuntary muscle spasms.
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Antibiotics. If stomach ache is caused by the bacterium responsible for peptic ulcer disease (Helicobacter pylori), the doctor may prescribe a course of antibiotics. Possible side effects include stomach upset, fungal infections, and diarrhea.
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Antidepressants. If, after thorough examination, the underlying cause of the symptoms remains unclear and the conventional treatments listed above have not been effective, the doctor may recommend an antidepressant medication. These prescription-only medications can help alleviate the discomfort caused by stomach ache by reducing the overall perception of pain. Possible side effects include headache, nausea, night sweats, agitation, and constipation.
In some patients affected by psychosomatic disturbances, a psychological support-based approach, such as cognitive behavioral therapy, can prove particularly effective in resolving persistent symptoms, especially when a clear link between stress, anxiety, and digestive symptoms has been identified.
Prevention
To prevent frequent, mild stomach ache, it is possible to adopt a generally healthier lifestyle. Here are some practical recommendations:
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Eat frequent, smaller meals rather than fewer, larger ones.
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Chew slowly, taking time to properly savor your food.
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Avoid exercising immediately after eating.
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Lose weight if necessary, since excess weight places additional pressure on the abdomen, pushing the stomach upward and promoting the backward flow of acidic gastric juices into the esophagus.
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Avoid eating before going to bed and during the night.
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Avoid known trigger foods, such as fatty and spicy foods, carbonated beverages, caffeine, alcohol, and smoking.
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Quit smoking.
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Engage in regular physical exercise. With your doctor’s approval, try to engage in physical activity for at least thirty minutes to an hour on most days. This can be as simple as a walk, though ideally not immediately after meals. By staying more active, you can avoid unwanted weight gain and improve overall digestion.
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Keep stress under control. Try to create a calm, relaxed environment at mealtimes. Practice relaxation techniques, such as deep breathing, meditation, or yoga. Dedicate time to activities you genuinely enjoy, and try to rest as much as possible.
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Reevaluate your use of medications. With your doctor’s approval, consider stopping or reducing the dosage of any medications that may be contributing to your symptoms. This is particularly relevant for aspirin and other anti-inflammatory medications known to potentially irritate the stomach lining. If discontinuing these medications is not possible, try taking them together with food.
Frequently Asked Questions
What should I take for stomach ache?
There are numerous medications available to provide relief from stomach ache, but it is advisable to consult your pharmacist or doctor before choosing one, since it is important to first properly understand the nature of the underlying disturbance. Depending on the specific symptoms involved (burning, bloating, pain, and so on), different medications may be more or less appropriate.
What should I do for stomach ache?
In the case of occasional, mild discomfort, it is generally recommended to eat light meals and favor several small meals over the traditional two large ones. It is also helpful to avoid alcohol and beverages containing caffeine. More specific recommendations can be provided once the particular symptoms experienced have been more clearly identified, ideally with the help of a healthcare professional.
How long does indigestion typically last?
Occasional, mild indigestion usually resolves within a few hours to a day, particularly once the triggering meal has been fully digested. Chronic or functional dyspepsia, on the other hand, can persist for weeks or months and often requires a more structured approach to diagnosis and treatment.
Can stress really cause stomach pain?
Yes, stress and anxiety are well-documented contributors to digestive symptoms, including stomach pain, bloating, and altered bowel habits. This connection is often referred to as the “gut-brain axis”, reflecting the close, bidirectional relationship between emotional and psychological states and digestive function.
Is it normal to have indigestion every day?
No, daily or near-daily indigestion is not considered normal and should prompt a conversation with your doctor. While it may still turn out to be a benign, functional condition, persistent daily symptoms warrant proper evaluation to rule out more significant underlying causes.
Can children experience indigestion too?
Yes, children can experience indigestion, often related to eating too quickly, consuming particularly rich or spicy foods, or experiencing stress or anxiety. If a child experiences persistent or severe stomach discomfort, it is advisable to consult a pediatrician for proper evaluation.
