Why does watermelon make you burp?

In this brief guide, we will answer the question, “why does watermelon make you burp,” and discuss if it is normal to burp after eating watermelon, and how to reduce the burping after eating watermelon.

Why does watermelon make you burp?

There are many reasons why you might burp after eating watermelon:

Watermelons have a high level of soluble fiber, which are resistant to digestion and not absorbed in the human small intestine. Instead, partial or complete fermentation of the fibers occurs in the large intestine, generating gas. 

As a consequence, depending on the amount ingested and the personal characteristics of the individual, such as sensitivity and composition of the gut microbiota, the ingestion of fibers and its fermentation can cause flatulence, diarrhea, abdominal distension and discomfort (1).

In addition, watermelons also contain fructose. Fructose belongs to the FODMAPs category (short-chain carbohydrates such as fructose, lactose, polyols such as sorbitol and mannitol, and fructans and galactans). 

FODMAPs are reported to cause disturbing gastrointestinal symptoms, such as bloating and flatulence, especially in individuals suffering from irritable bowel syndrome (2).

Is it normal to burp after eating watermelon?

Yes, it’s normal to burp after eating watermelon, especially when eaten in large amounts. Watermelon contains 0.4 g of fibers per 100 g (4) and fiber can be fermented by the colonic microflora to gases such as hydrogen and carbon dioxide (3).

Burping is a natural form of the body to eliminate the gas that is produced after the fermentation process that occurs in the intestines resulting from digestion.

Are there any positive aspects about burping after eating watermelon?

There are positive aspects of burping after eating watermelon. Burping after eating watermelon means the production of gas due to fermentation of fibers and fructans (the long chained form of the fructose), which result from the digestive processes (1).

The positive effects of eating fibers in the human health are many (1,2,3):

  • A diet rich in fibers is related to lowering body fat and body weight
  • The ingestion of fibers reduce the risks of constipation by the increase in the volume of the fecal bolus 
  • By the digestion of fibers the body produces short chain fatty acids (SCFA) which can positively influence the physiology of the colon and participate in different host signaling mechanisms 
  • Fibers improve the gut microbiota, having beneficial effects to the immune system
  • A high-fiber diet is related to decreased risk of colorectal cancer, type 2 diabetes and cardiovascular disease
  • The ingestion of fibers can also modulate cholesterol levels
  • The ingestion of fibers can improve mineral absorption (e.g., calcium, iron and magnesium)

How can you reduce burping after eating watermelon?

To reduce the negative symptoms related to the ingestion of watermelon and  other fruits and foods rich in fibers and fructans, the periodic consumption of probiotics is recommended (6).

Probiotics are foods containing live microorganisms, such as lactic acid bacteria and bifidobacteria that are present in dairy products or other fermented foods.

 Yogurt, kefir and sauerkraut are some examples of probiotic foods. Probiotic microorganisms are able to colonize the intestine and change the gut microbiota, resulting in many health benefits. 

Several studies have shown that a regular consumption of probiotics may reduce gastrointestinal symptoms, including flatulence, bloating, diarrhea and even constipation. In addition, probiotics can help improve the immune system and prevent diseases. 

Who should not eat watermelon?

Individuals suffering from irritable bowel syndrome are not advised to eat watermelon, due to the high amount of fructose of this fruit. Watermelon contains 3.36 g of fructose in every 100 g of fruit pulp (4). 

Fructose is included in the FODMAP (short-chain carbohydrates such as fructose, lactose, polyols such as sorbitol and mannitol, and fructans and galactans) and is highly fermentable, resulting in the production of gas in the intestines.

Irritable bowel syndrome is a chronic gastrointestinal disorder characterized by disordered bowel habits that are typically present (i.e. constipation, diarrhea or a mix of constipation and diarrhea), as well as symptoms of abdominal bloating/ distention and flatulation (2). 

The National Institute for Health recommends a diet of low FODMAPs for individuals suffering from IBS. 

What are the benefits of watermelon?

There are many benefits related to the ingestion of watermelon. Watermelon contains a high amount of water and helps you stay hydrated.

Watermelon contains minerals, such as potassium, which is important for maintaining a healthy blood pressure, calcium, which is essential for maintaining bone health and preventing osteoporosis and to reduce body weight. 

Besides, watermelon is a source of vitamin C, B, E and A and has a strong antioxidant potential, due to the presence of phytochemicals such as lycopene andβ-carotene, which are related to helping reduce diseases and inflammations, including hypertension and arthritis (5).  

In addition, watermelon contains considerable amounts of citrulline, an amino acid that was found to have beneficial effects to the immune system, the neurological functions and to be useful in the treatment of erectile disorders. It has been reported that citrulline can improve sexual stamina.

Conclusion

In this brief guide, we have addressed the question, “why does watermelon make you burp,” and other questions related to the subject, such as is it normal to burp after eating watermelon, and how to reduce the burping after eating watermelon.

Citations

  1. Slavin, Joanne L., and Beate Lloyd. Health benefits of fruits and vegetables. Adv nutrition, 2012, 3, 506-516. 
  2. Lockyer, S., and S. Stanner. Prebiotics–an added benefit of some fibre types. Nutrition Bull, 2019, 44, 74-91. 
  3. Salvatore, Silvia, et al. Dietary Fibers in Healthy Children and in Pediatric Gastrointestinal Disorders: A Practical Guide. Nutrients, 2023, 15, 2208. 
  4. Watermelon. Food Data Central. United States Department of Agriculture.
  5. Maoto, Makaepea M., Daniso Beswa, and Afam IO Jideani. Watermelon as a potential fruit snack. Int J food prop, 2019, 22, 355-370.
  6. Hoveyda, Nourieh, et al. A systematic review and meta-analysis: probiotics in the treatment of irritable bowel syndrome. BMC gastroenterol, 2009, 9, 1-11.

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