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5 Reasons You Feel Nauseous Inside and How to Calm It Down

Sinchon Dain Dental Hospital · 신촌다인치과병원 · December 13, 2023

5 Reasons You Feel Nauseous Inside and How to Calm It Down After finishing a meal, nausea can suddenly appear and it may feel like you have indigestion and feel nauseous inside. Ev...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: Sinchon Dain Dental Hospital

Original post date: December 13, 2023

Translated at: April 24, 2026 at 5:02 AM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

5 Reasons You Feel Nauseous Inside and

How to Calm It Down

5 Reasons You Feel Nauseous Inside and How to Calm It Down image 1

After finishing a meal, nausea can suddenly appear

and it may feel like you have indigestion and feel nauseous inside.

Even if it is not right after a meal, if your stomach feels tight and

nauseated at random times, you should suspect a gastrointestinal

condition.

Today, let’s look at the reasons why this feeling of nausea occurs,

and also how to calm it down.

5 Reasons You Feel Nauseous Inside and How to Calm It Down image 2 Reflux Esophagitis Reflux esophagitis is one of the most common gastrointestinal

diseases among modern people, and it occurs when stomach acid

refluxes and irritates the esophagus, causing various discomforts.

It is accompanied by a burning sensation of heartburn in the upper

abdomen and chest pain, and you may feel sour fluid coming up

from the stomach. You may also have a sore throat or a rough,

foreign-body sensation in your throat.

In addition, compared to other people, digestion may not go well,

and you may continuously feel nauseated and as if you have

indigestion, which can worsen due to the habit of lying down right

after eating.

5 Reasons You Feel Nauseous Inside and How to Calm It Down image 3 Poor Eating Habits Poor eating habits among modern people can cause indigestion,

nausea, and sudden indigestion symptoms. Among them, the most

common are overeating and late-night snacks.

If you eat a large amount of food at once in a single meal, or if you

eat quickly because you are short on time, it is easy to get indigestion.

Also, if you eat late at night and then lie down while still not fully

digested, you may wake up in the morning feeling nauseated and

uncomfortable.

Also, if you usually eat spicy, salty, or oily foods often, the stomach

lining can be irritated, which may cause heartburn and nausea, so

it is best to be careful.

5 Reasons You Feel Nauseous Inside and How to Calm It Down image 4 Stress When you feel nauseated inside, stress can also be a major cause,

because stress activates the sympathetic nervous system, which is

part of the autonomic nervous system.

When the sympathetic nervous system is activated, blood vessels

dilate, the heart rate increases, and blood concentrates toward the

brain, heart, and muscles, which relatively reduces digestive

function.

If you are exposed to continuous stress, the sympathetic nervous

system remains activated, indigestion can become chronic, and

the symptoms of indigestion may appear frequently.

5 Reasons You Feel Nauseous Inside and How to Calm It Down image 5 Caffeine Intake If people whose stomachs are usually sensitive, or who are sensitive

to caffeine, consume too much caffeine, their heart may beat faster,

nausea may occur, and symptoms of indigestion may appear.

Also, if you consume it on an empty stomach, heartburn may become

strong, so it is better to reduce your caffeine intake. Pregnancy During pregnancy, morning sickness can occur, with symptoms such

as nausea and vomiting. It usually appears in the early stages of

pregnancy and is accompanied by loss of appetite.

When you feel nauseated inside during pregnancy, it is better to

reduce fatty foods, and you should avoid spicy, salty, and irritating

foods. It is also best to eat small amounts of food more often if possible.

5 Reasons You Feel Nauseous Inside and How to Calm It Down image 6 How to Calm It Down To ease the feeling of bloating in the stomach, gently press and

acupressure the pressure point between the index finger and thumb,

which can be effective.

Also, sitting down to rest or falling asleep is one way to ease

nausea.

Today, we looked at the reasons why you may feel tight and

nauseated inside, and how to calm the symptoms down. I hope the

information above was helpful.

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