What Causes Nausea and Vomiting After Eating

What causes nausea after eating? Nausea after eating can be caused by many things, including stress, food poisoning, digestive problems, GERD, or other medical conditions.

The following is an explanation of the various possible causes of nausea after eating.

1. Food Allergies

Everyone has allergies to certain types of food. Some are allergic to peanuts, eggs, shellfish, shrimp, and others.

When you eat foods that trigger allergies, your immune system releases histamine and other chemicals.

These chemicals will produce allergy symptoms in the form of itching, swollen mouth or lips,stomach upset and nausea.

2. Unhealthy Habits

The habit of smoking and drinking alcoholic beverages can also cause stomach problems, so that you often feel nauseous.

In addition to nausea, you can also feel symptoms of abdominal pain, heartburn, vomiting, and lack of appetite due to these bad habits.

3. Food Poisoning

Eating food contaminated with bacteria, viruses, and parasites can make you sick. This happens if the food you consume is not handled properly, starting from the process of selecting food ingredients, the cooking process, and serving.

Symptoms of food poisoning usually appear hours, days, even weeks after consuming food that contains germs or microbes, and will generally be characterized by nausea, diarrhea, stomach cramps, pain after eating.

4. GERD (gastroesophageal reflux disease)

GERD is also known as acid reflux disease. This disease occurs when stomach acid rises up into the esophagus, causing irritation of the mouth and esophagus.

Some of the symptoms that indicate GERD are nausea and vomiting, abdominal pain or heartburn, and chest pain or burning after eating.

5. Stomach ulcer

Stomach ulcers are also one of the causes of nausea after eating. This condition occurs due to an injury to the lining of the stomach wall.

Stomach ulcers can be caused by bacterial infections, side effects of drugs, smoking habits, or excessive consumption of alcoholic beverages.

6. Pregnancy


One of the earliest signs that you are pregnant is feeling uncomfortable and nauseous, which often occurs in the second month of your pregnancy.

A study on the causes of vomiting and nausea in pregnancy found that changes in hormone levels in pregnant women may be associated with feelings of nausea and vomiting after eating.

Sometimes the smell or taste of certain foods is enough to make pregnant women feel nauseous. The good news is that the nausea is temporary and will not harm you or your baby.

7. Stress and Anxiety

Stress not only affects your emotions, but also affects your physical health.

A study published in the journal Cell and Tissue Research found that psychological stress can adversely affect the functioning of your various digestive organs. Therefore, stress and anxiety can be the cause of your nausea after eating.

When should you go to the doctor?

You don’t have to worry if you only experience nausea once after you eat. However, you need to contact your doctor if nausea after eating persists and is accompanied by any of the following symptoms:

  • Chest pain.
  • Diarrhea that lasts more than a few days.
  • Dehydration with symptoms of dry skin and mouth, dizziness, weakness, not urinating, dark urine, and increased heart rate.
  • Fever more than 30 degrees Celsius.
  • Unbearable stomach ache.
  • Fast heartbeat.
  • Frequent vomiting.
  • There is blood in the vomit, marked by vomiting fresh red or black like asphalt.