Last Updated on 10 July 2025 by Brisbane Livewell Clinic
Stomach Issues That Cause Weight Gain: Digestive Problems Leading to Increased Weight
Chronic inflammation and problems with your digestion can lead to weight gain due to the inability of your digestive system to properly break down foods. Nutrients may be insufficiently absorbed, and your body may inefficiently process waste and toxins, leading to bloating and constipation, excess body fat, poor eating behaviors, other GI symptoms and Leaky Gut.
Leaky Gut Syndrome – At the Root of All Digestive Problems?
A common cause of digestive problems is Leaky Gut Syndrome. It’s becoming more and more well-known amongst traditional medical practitioners (including GPs and Specialists), and it’s definitely a good idea to learn about it so you can then consult with a Naturopath to determine whether Leaky Gut affects you.
Discovering whether you have Leaky Gut, or whether you are at increased risk of this condition, can also help with pain management and reducing inflammation, and it can help you understand whether you need to make lifestyle modifications and dietary changes.
Addressing Leaky Gut Syndrome is crucial for optimising intestinal health and can help prevent weight gain associated with gut dysfunction.
Understanding Digestive Problems: A Key to Managing Your Digestive Health
Digestive problems, or gastrointestinal issues, often play a pivotal role in how our day unfolds. Issues stemming from our digestive system, including gastrointestinal symptoms, can quickly sour our daily experience.
These problems can often be influenced by our dietary choices.
Experts in Gastroenterology suggest that digestive issues can lead to various complications, including weight gain.
Maintaining a healthy digestive system and understanding the different between good and bad bacteria is crucial for overall wellbeing.
Could Digestive Problems Be Behind Your Unexplained Weight Gain?
If you’re suffering from unexplained weight gain, digestive problems may be the cause. Read on to find out some of the digestive issues that can cause weight gain, or book a consultation with one of our skilled Naturopaths.
What are the Digestive Problems that can lead to weight gain?
1. Acid Reflux Disease
Known as Gastroesophageal Reflux Disease (GERD), sufferers experience acid reflux symptoms such as a burning sensation inside their stomach and lower chest. This burning sensation often feels like your stomach acid is rising upwards in your chest.
GERD often prompts individuals to eat to alleviate discomfort. Yes, eating does reduce the burning sensation, but once you’re done eating, and the stomach starts digesting, the burning sensation relapses.
This vicious eating cycle can lead to overeating, causing bloating, nausea, and hiccups, and potentially contributing to weight gain.
2. Ulcers
Peptic ulcer disease refers to sores that form along the lining of the stomach, small intestine, or oesophagus. Ulcers are a result of excessive acid production, and similar to GERD, eating food may feel like it’s improving the painful sensation in the lower stomach.
However, frequent overeating as a response can result in bloating and weight gain.
3. Constipation
A common misconception is that constipation directly leads to weight gain. While not directly causative, frequent constipation can indicate a slower metabolism, which may affect weight.
Additionally, delayed gastric emptying, a condition where the movement of food from the stomach to the small intestine is slowed or stopped, can contribute to constipation and impact weight.
4. Overgrown Bacteria
An imbalance in intestinal bacteria within the digestive tract can disrupt digestion and bowel function. This imbalance can influence weight management and overall digestive health.
Small intestinal bacterial overgrowth (SIBO) is a common health issue amongst many patients who come and see our Naturopaths. Because it’s not commonly tested for by the medical profession, it can often go unnoticed for many years, causing digestive disorders, food sensitivities, abdominal pain, chronic inflammation, abdominal bloating, abdominal distension and poor absorption of nutrients as well as many other symptoms.
These symptoms can often lead to weight gain.
5. Irritable Bowel Syndrome (IBS)
Irritable Bowel Syndrome occurs when the stomach goes through digestive issues like food sensitivities, diarrhea, and an imbalance in good and bad bacteria. A primary symptom is abdominal pain, often accompanied by bloating and exacerbated by constipation. Bloating may cause its sufferer to feel like they have put on weight.
IBS shouldn’t be confused with inflammatory bowel disease, which is discussed in the next point.
6. Ulcerative Colitis
Inflammatory bowel disease, such as Ulcerative Colitis or Crohn’s Disease, typically results in decreased appetite and weight loss. Medical treatments involving steroids can reverse these symptoms, leading to increased appetite and weight gain, as well as poor gut health.
FAQs
1.What is the connection between digestive problems and weight gain?
Digestive issues, like impaired metabolism, gastrointestinal disorders, or an imbalance in gut bacteria, can lead to weight changes, often manifesting as unexplained weight gain.
2. Can acid reflux or GERD cause weight gain?
GERD (Gastroesophageal Reflux Disease) can contribute to weight gain. Abdominal discomfort, a common symptom of acid reflux, may lead to eating patterns that alleviate GERD symptoms but result in increased calorie intake.
3. How does irritable bowel syndrome (IBS) affect body weight?
IBS can impact weight. Fluctuations in bowel habits and bloating associated with IBS, especially in cases where constipation is predominant, can lead to temporary weight gain. Changes in eating habits as a result of IBS (eg eating more carbohydrates because they seem gentler on the stomach) can also result in weight gain.
4. Do ulcers influence weight changes?
Ulcers, particularly in the stomach or duodenum, are caused by excessive acid in the stomach, and patients may often eat certain foods such as carbohydrates to alleviate symptoms. However, frequent overeating as a response can result in bloating and weight gain.
5. Is there a link between bacterial overgrowth in the gut and weight gain?
There is a link between bacterial overgrowth in the gut and weight gain. An imbalance of gut flora, like small intestinal bacterial overgrowth (SIBO), can disrupt digestion and nutrient absorption, potentially leading to weight gain. This is one of the many reasons why gut health is so important.
6. Can treating constipation help with weight management?
Addressing constipation can aid in weight management by improving metabolic health and nutrient absorption and reducing bloating (though treatment of constipation doesn’t directly result in weight loss).
7. How does ulcerative colitis treatment affect weight?
Treatment for ulcerative colitis, especially with steroids, can lead to increased appetite and potential weight gain, contrasting with the weight loss often seen in untreated cases.
8. Are digestive enzyme deficiencies linked to weight gain?
Deficiencies in digestive enzymes can lead to malabsorption and digestive discomfort, which may alter eating habits and contribute to weight gain.
9. Can a high-fiber diet help with weight management in digestive disorders?
A balanced diet rich in high-fiber foods can be beneficial for digestive health and weight management, aiding in regular bowel movements and potentially alleviating symptoms of digestive disorders.
10. Should I see a Doctor or a Naturopath for unexplained weight gain?
It is always better to consult your GP first if you have any unexplained weight gain. Once they have ruled out causes in the “traditional” medical realm, or diagnosed an issue, you can then consult with a Naturopath to help with healing the digestive problem and improving your gut health. This may also help you lose weight.
11. Should I consider DNA testing to find out the cause of my weight gain?
If you’re seeking personalised insights into your weight management that go beyond general health advice, DNA testing can be a valuable tool. Finding out whether you have the MTHFR Gene mutation, for example, can give you significant insights into your health and how to improve it.
However, it’s important to view DNA testing as a complement to, not a replacement for, traditional approaches like diet and exercise. Consulting a healthcare professional for a treatment plan is crucial before seeing your Naturopath for DNA Testing.
12. What are the steps involved in DNA testing for weight gain?
Typically, the process involves collecting a DNA sample (usually through a saliva swab or a blood test), which is then analysed in a lab to identify genetic variations. The results can provide insights into how your genetics may affect your weight and help your Naturopath come up with a treatment plan that best suits your specific needs.
Fix Your Weight Gain Challenges
So if you have unexplained weight gain, GI symptoms, or suspected bacterial infections or digestive conditions, and you want to feel healthier and heal your gut microbiome, make sure you book in with our Naturopaths using the button below.
Our Naturopaths can help you get to the root of the problem, and they (or our Clinical Nutritionists) can recommend the types of foods, eating behaviours, and a healthy diet that will help you reverse your weight gain, reduce inflammation, regain normal digestion, heal your digestive problems and achieve optimal health.
13. Is the Genetic Methylation Test complicated?
The itself is straightforward, involving a simple sample collection process. However, interpreting the results and understanding their implications for your health and diet can be complex, requiring professional guidance. Our skilled Naturopaths can help you with this.
14. Can DNA testing provide a definitive answer to weight gain issues?
While DNA testing can offer valuable insights into genetic factors that may influence weight, it’s not a definitive solution. Weight gain is influenced by a combination of genetic, environmental, and lifestyle factors. DNA testing should be part of a comprehensive approach to health and weight management.
15. Where can I get more information on the Genetic Methylation Test?
For detailed information on the Genetic Methylation Test and its relevance to weight management, visit Brisbane Livewell Clinic’s page on Genetic Methylation Testing.
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