Loose Stools and Weight Loss: Digestive Issues - Gastroenterology and Hepatology

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Loose stools + continuous weight loss?


I have been experiencing loose stools for two consecutive months, where the stool disperses immediately upon flushing.
I consulted a doctor who suggested that I might have eaten something that caused this, and after taking medication, it was normal for a week, but now the issue has returned.
I often see food remnants, especially vegetables, in my stool, even though I chew them thoroughly and do not eat a lot; they are just not being completely digested.
Regarding my weight, I was 40 kg last November, but now I have dropped to 37 kg, even though my food intake has not decreased.
Could this be related to the nutrients from food not being absorbed? As for the inability to fully digest vegetables, could there be an issue with my small intestine? I also have a lack of appetite; is it possible that this could be cancer? Which specialist should I see?

Lin, 20~29 year old female. Ask Date: 2020/05/15

Dr. Lin Minghui reply Gastroenterology and Hepatology


Hello! A 21-year-old female presents with loose stools and ongoing weight loss.
Despite medication improving her condition, she continues to experience good appetite and indigestion, leading to further weight reduction.
It is advisable to consult with internal medicine, family medicine, or gastroenterology to investigate any gastrointestinal or metabolic issues.
Wishing you health and safety! Sincerely, Dr.
Ming-Hui Lin, Attending Physician, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare.

Reply Date: 2020/05/15

More Info


It sounds like you are experiencing significant digestive issues, including loose stools and unintended weight loss, which can be concerning. The symptoms you describe—frequent loose stools, undigested food remnants in your stool, and a notable decrease in weight despite a normal or increased food intake—suggest that your body may not be absorbing nutrients effectively. This condition is known as malabsorption, and it can stem from various underlying health issues.

First, let's address the potential causes of your symptoms. Malabsorption can occur due to several factors, including:
1. Gastrointestinal Disorders: Conditions such as celiac disease, Crohn's disease, or irritable bowel syndrome (IBS) can lead to malabsorption. These disorders affect the intestines' ability to absorb nutrients properly.

2. Infections: Gastrointestinal infections caused by bacteria, viruses, or parasites can disrupt normal digestion and absorption, leading to diarrhea and weight loss.

3. Enzyme Deficiencies: The pancreas produces enzymes that are essential for digesting food. If your pancreas is not producing enough enzymes (a condition known as exocrine pancreatic insufficiency), you may experience malabsorption.

4. Structural Issues: Any structural abnormalities in the intestines, such as strictures or tumors, can impede the digestive process and lead to symptoms like yours.

5. Dietary Factors: Sometimes, certain foods can trigger digestive issues, especially if you have an intolerance or allergy to them. For example, lactose intolerance can cause diarrhea and bloating after consuming dairy products.

Given your symptoms and the significant weight loss, it is crucial to seek medical attention. You should consider visiting a gastroenterologist, a specialist in digestive system disorders. They can perform a thorough evaluation, which may include blood tests, stool tests, imaging studies, or endoscopic procedures to determine the underlying cause of your symptoms.

In the meantime, here are some general recommendations:
- Keep a Food Diary: Document what you eat and any symptoms that follow. This can help identify potential food intolerances or triggers.

- Stay Hydrated: Loose stools can lead to dehydration, so ensure you are drinking plenty of fluids.

- Balanced Diet: Focus on a balanced diet rich in nutrients. If certain foods seem to worsen your symptoms, consider eliminating them temporarily and reintroducing them one at a time to identify any triggers.

- Probiotics: These can help restore the natural balance of bacteria in your gut, which may improve digestion and stool consistency.

- Avoid Self-Diagnosis: While it’s natural to be concerned about serious conditions like cancer, it’s essential to avoid jumping to conclusions without proper medical evaluation. Many gastrointestinal issues can be treated effectively once diagnosed.

In summary, your symptoms warrant a thorough investigation by a healthcare professional. Malabsorption can lead to significant health issues if left untreated, so seeking medical advice is the best course of action. Remember, early intervention can lead to better outcomes and help you regain your health.

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