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Health Today

Having an upset stomach can undoubtedly be one of the most irritating and painful symptoms. Gas, bloating, nausea, vomiting, and diarrhea are terrible, and it can sometimes feel as if it will never end. However, before you can deal with the issue at hand, you need to understand why you are feeling this way.

Below, we are going to discuss six reasons why you might have an upset stomach.

Let’s get started.


You might have heard of the term before, but you may still be asking yourself, what is gastro? Well, in short, it’s a condition that causes infection and inflammation of the digestive system. Another more common term for it is the stomach flu or bug. Viruses, bacteria, and parasites can all be its cause, but luckily it usually resolves itself within 24-48 hours.

Food Poisoning

Food poisoning is the result of eating contaminated or toxic food. You’ll usually notice symptoms of an upset stomach around a few hours after eating the spoiled item. However, in some cases, it can take a few days. Like gastro, it can usually resolve itself, but if you have a high fever or symptoms of severe dehydration, it’s essential to seek medical help immediately.

Celiac disease

Celiac disease is a severe condition that triggers an immune response when the individual ingests gluten. This causes damage to the small intestine, and nutrients can’t be absorbed into the body. If you suspect that this is the cause of your upset stomach, it’s important to see your doctor. A variety of tests will need to be done to get a proper diagnosis.


Morning sickness from being pregnant is another reason why you may be feeling unwell. It’s one of the most common pregnancy symptoms, but luckily, it usually fades by the end of the first trimester. You can find some tips to help manage it here.

Lactose Intolerance/Food Allergy

Food intolerances and allergies are another reason why you might be feeling sick in the stomach. However, before you determine if you have one, it’s essential to learn the difference between the two.

Food intolerance = A chemical reaction that doesn’t involve the immune system. Gluten, dairy, and caffeine are some of the most common causes.

Food allergy = Occurs when the body reacts to the protein in a specific food. They are much more severe and can lead to anaphylaxis. Cow’s milk, eggs, nuts, and seafood are some of the most common causes.

If you have concerns, speak to your doctor about getting a prick test. This will help you determine what you need to avoid, and you may receive an epi-pen in the case of a severe allergic reaction.


Lastly, indigestion occurs from overeating or eating too quickly. Heartburn, nausea, bloating, and vomiting are few symptoms you may experience. It happens to almost everyone but can also be a symptom of more serious digestive issues. If changing your eating habit doesn’t elevate this condition, it’s best to visit your local GP.

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