Is Eating Too Full Can Cause Fainting?

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HealthReplies.com, yesterday a few minutes after breakfast I suddenly felt nauseous, dizzy, tingling then passed out. I have checked blood pressure to the clinic, the results are normal, the doctor said he said fainting can occur without cause, but I am not satisfied with the conclusion because what I felt was just the right time before yesterday to eat until full, and then fainted. I am not the type of person who likes to eat, sometimes one meal a day depends on the activity. So, can eating out cause fainting?

1 Answer:

Good evening, thanks for the question


The condition of decreasing blood pressure to cause syncope or fainting after eating is called postprandial hypotension. Postprandial means the period of time after eating, whereas hypotension is low blood pressure.


The main symptoms are dizziness, the head feels light, until fainting 20-60 minutes after eating. When eating, the digestive system requires more blood flow than the condition before eating. In normal conditions the heart will work harder to supply blood to the digestive tract which is controlled by the autonomic nervous system. Failure of the autonomic nervous system causes blood flow to the digestive tract does not increase, causing a decrease in blood flow to other organs so that the digestive system still gets adequate blood flow. As a result, blood pressure will drop suddenly but is temporary.


Postprandial hypotension can be diagnosed if there is a decrease in systolic blood pressure of at least 20 mmHg within 2 hours after eating.


If you take blood pressure-lowering drugs regularly, your doctor will advise against taking them before eating. Other prevention efforts such as eating small portions but are often better than eating 3x but in large portions.


If you experience symptoms of postprandial hypotension, pay close attention to what kind of food you have consumed before. If you previously ate a high-carb diet, consider reducing the amount of carbohydrate in your diet. Eat more frequently but smaller portions with fewer carbohydrates are believed to prevent postprandial hypotension.


That's all, hope you can help


Wassalam, Dr. Farah

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