Why Does My Poop Smell Like Weed?

We’ve all experienced unique and sometimes puzzling scents emanating from our bathroom after using the toilet. One such peculiar occurrence is the smell of weed in our poop. While it may be an uncomfortable topic to discuss, it’s important to understand the possible reasons behind this phenomenon. In this article, we’ll explore ten potential causes for why your poop may smell like weed, shedding light on both benign and more serious explanations. So, let’s dive in and unravel the mystery.

Why Does My Poop Smell Like Weed?

Diet and Food Choices

The food we consume has a significant impact on our body’s functions, including the odor of our poop. Certain foods, such as asparagus, garlic, and onions, contain sulfur compounds that can produce strong smells when broken down in the digestive system. Additionally, consuming large amounts of spices or heavily seasoned foods can also lead to changes in poop odor.

Cannabis Consumption

The most straightforward explanation for poop smelling like weed is the consumption of cannabis. When THC (the active compound in marijuana) is ingested, it undergoes metabolic processes in the body, which can result in the odor being excreted through the feces. This occurrence is especially noticeable if you’ve recently consumed or smoked marijuana.

Medications and Supplements

Certain medications and supplements can alter the composition and smell of your stool. For example, antibiotics can disrupt the balance of bacteria in the gut, leading to changes in odor. Additionally, iron supplements or medications containing bismuth can cause dark-colored stools that might resemble the smell of weed.

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Gastrointestinal Infections

Infections caused by bacteria, viruses, or parasites can affect the digestive system and result in changes in stool odor. Conditions like gastroenteritis or bacterial overgrowth in the intestines can lead to foul-smelling feces. If you suspect an infection, it’s important to consult a healthcare professional for diagnosis and appropriate treatment.

Malabsorption Issues

Problems with the absorption of nutrients in the digestive tract can cause changes in the smell and appearance of your stool. Conditions like celiac disease, lactose intolerance, or pancreatitis can result in foul-smelling poop. If you suspect malabsorption issues, seeking medical advice is crucial to manage the underlying condition effectively.

Intestinal Blockages

Partial or complete blockages in the intestines can disrupt normal digestion and lead to changes in stool odor. Conditions like bowel obstructions, tumors, or even ingested foreign objects can cause this issue. If you experience persistent changes in poop odor accompanied by other symptoms like abdominal pain or constipation, it’s vital to seek immediate medical attention.

Liver or Gallbladder Problems

The liver and gallbladder play important roles in digestion, and issues with these organs can manifest in changes in stool odor. Conditions like liver disease, hepatitis, or gallstones can cause malfunctions in the digestive process, leading to unusual smells in the feces. Consulting a healthcare professional is essential for proper diagnosis and treatment.


Inadequate hydration can affect the consistency and smell of your poop. When the body lacks sufficient fluids, it absorbs more water from the colon, resulting in dry, hard stools that can emit stronger odors. Maintaining proper hydration levels by drinking an adequate amount of water each day can help prevent this issue.

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Digestive Disorders

Various digestive disorders, such as irritable bowel syndrome (IBS) or inflammatory bowel disease (IBD), can contribute to changes in poop odor. These conditions often involve inflammation and abnormalities in the gastrointestinal tract, leading to altered bowel movements and foul-smelling feces. Proper diagnosis and treatment by a healthcare professional are crucial for managing these disorders effectively.

Other Health Conditions

In some cases, poop smelling like weed could be a symptom of an underlying health condition not directly related to the digestive system. Metabolic disorders, such as trimethylaminuria (fish odor syndrome), or certain genetic conditions can lead to unusual smells being excreted through bodily fluids, including feces. If you suspect an underlying health condition, consult a medical professional for an accurate diagnosis.


The smell of weed in your poop can stem from various factors, ranging from benign dietary choices to underlying health conditions. Understanding the possible causes outlined in this article can help you navigate potential concerns and decide whether medical advice is necessary. Remember, if you experience persistent changes in poop odor accompanied by other unusual symptoms or concerns, consulting a healthcare professional is always the best course of action.

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