On the right side of the image, there is a man suffering from diarrhea. A roll of toilet paper and a soap dispenser are hovering over his head. On the left, there is a pile of pistachios. (Pistachios-diarrhea)

Can pistachios give you diarrhea?

Pistachio nuts

Pistachio causes diarrhea?

Let’s say you tried pistachios once and you fell in love with their buttery taste. I know, they taste delicious, which makes them an awesome choice for snacks. However, some people experience diarrhea after eating pistachios. In this post, we’re going to talk about why pistachios may cause diarrhea, and what is in them that makes some people cautious about eating them. 

Why do pistachios cause diarrhea?

This is a tricky question because sometimes we are not sure that what we are experiencing is due to eating pistachios, and not something else. However, if you are sure that it is the pistachios that are causing diarrhea, then keep reading to get to the bottom of this!

There are multiple reasons one might experience diarrhea after eating pistachios. In order to understand them, let’s first have a look at the nutrition facts of pistachios and what they contain. This is important because then you can understand how healthy they are and why is it important to include them in your diet, and on the other hand, why they might be the reason that you have to camp in the bathroom after eating them. 

Nutrition facts of pistachios

A serving of one ounce or about 50 kernels, contains about 150 calories. Eating 50 pistachios may only take about half an hour, yet you will get about 6 grams of protein in return. Also, you won’t have to worry about your cholesterol levels as they are filled with good fats. 

Pistachios are great sources of fiber, vitamins, and minerals. Pistachios include manganese, copper, phosphorus, and vitamin B6. If you are not still amazed by the nutritional powers of pistachios, then allow me to tell you that only 2 ounces of pistachios can provide more potassium than a small bowl of broccoli or a large banana. 

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Now, that you know how nutritious pistachios are, let’s discuss the reasons why pistachios may become laxative.

What causes diarrhea after eating pistachios?

Diarrhea happens when the body wants to limit the severity of infection. Therefore, diarrhea happens in order to clear out the digestive tract from harmful pathogens. You may now ask what are the “harmful pathogens” that can cause diarrhea? 

In the following, you can read about the two common reasons why people may experience diarrhea after eating pistachios. The two reasons are fructan intolerance and having tree nut allergies

Pistachio and tree nut allergy

Pistachios are not nuts! Yup, they are actually drupes, but they are categorized as “culinary nuts”. However, people who have tree nut allergies show allergic reactions to all of the nuts that are categorized as tree nuts, such as almonds, hazelnuts, walnuts, and peanuts. You can find more information in our posts about walnut allergy symptoms and hazelnut allergy symptoms

Tree nut allergy is a common condition among people around the world. The symptoms are not usually life-threatening. Yet, there is the possibility of going through anaphylaxis shock. People with tree nut allergies have to stay away from eating tree nuts forever, as tree nut allergy can be a life-long condition. 

Let’s imagine that you may be allergic to pistachios. What happens is that the immune system of your body mistakes the proteins in pistachios as harmful pathogens and substances. The immune system then produces specific antibodies that cause the digestive system to produce histamine. Histamine is responsible for fighting off infections in your body. However, if your body produces high amounts of histamine, then it can cause inflammation. Diarrhea and other digestion problems can be the result of inflammation and swelling in the intestines. 

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You should pay attention that if you are allergic to pistachios or tree nuts, there are other symptoms that can signal your allergic situation. Other allergic reactions may include vomiting, nausea, flatulence, and abdominal pain.

Fructan intolerance and pistachio

The other reason you may have diarrhea after consuming pistachios is that they contain fructan. Fructans are necessary and responsible for maintaining good bacteria in the intestines. Fructans confer antioxidant benefits and maintain the immune system. Fructans also support healthy blood sugar levels. 

Fructan-intolerance, on the other hand, is a condition that causes those who have it to bloat, or experience flatulence, abdominal pain, or diarrhea. These symptoms are the body’s reactions in order to eliminate the fructans. 

In a pistachio shell

Pistachios are delicious and healthy, however, some people may experience diarrhea after eating them, which can have multiple reasons. Either, you are fructan intolerant, or you have pistachio allergy. Both of these conditions may cause your digestive system to react. Diarrhea after eating pistachios can be a sign that you need to eat less, or maybe none at all! Comment your thoughts about this condition, and tell us if you know anything that can help the situation. Also, share our post with your friends and family!

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