Imagine you’ve eaten a delicious edible, nature calls and you get a whiff of something familiar. No, you’re not imagining things, your poop smells like weed. Naturally, the next thing on your mind is Why does my poop smell like weed?

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Why Does My Poop Smell Like Weed?

So, why does your poop smell like weed? There isn’t a lot of scientific studies about weed and poop but we have some guesses based on what we do know.

Everyday Health says that your poop can smell different based on your diet. For instance, our takeaway was that if you take hits from a bong or some other method, your poop can smell like weed. 

Did you know that most of the weed you consume is excreted in your poop?

According to a study, more than 65% of weed is excreted in feces. Within about 5 days up to 90% of the weed you consumed is excreted.

FYI poop may not be the only thing smelling like weed. Some stoners also report that their BO or their armpit starts to smell like marijuana. There are people who have quit smoking weed and still report having that smell.

Dr. Matan Shelomi, a researcher at Germany’s Max Planck Institute for Chemical Ecology, quoted in Vice said, “It wouldn’t surprise me if heavy weed intake could alter your smell,”

Can Weed Turn My Poop Green?

Not only do stoners say their poop smells like weed, but it also looks a little like it too! 

While there isn’t much information on weed and poop, we know that what you eat affects poop color. 

Rick and Morty glow in the dark bong

According to Reno Gazette Journal, “The color of stools can change day to day, depending on what was consumed.”

Weed is not the only thing that can turn your poop green. A UC San Diego Health article, says that green leafy vegetables, green food coloring, and iron supplements can cause green poop. In addition to that, if your food moves through your digestive tract too quickly, you may end up with green poop too.

Does Weed Make You Poop?

Not only does weed affect your poop’s smell and look, it affects pooping in general. The endocannabinoid system actually regulates bowel movement. Since cannabinoids bind to endocannabinoid receptors, they may have some say on the matter too.

To be more specific, a study notes CB1 receptors are found on neurons most abundantly found in the gut. On the other hand, CB2 receptors are found in epithelial cells in the GI tract (and other places). The researchers also mentioned that weed slows down GI motility and reduces cramping. 

So, if you notice that nature calls after you finish using weed, you’re not imagining things. According to another study, recent recreational marijuana use was associated with a 30% decreased odds of constipation. 

Using Weed to Treat IBS

We’ve established a link between weed and your bowel movements. That’s why experts think that maybe weed can be used for IBS. 

In case you’re not familiar, IBS stands for Irritable Bowel Syndrome. IBS affects about 12% of the US population. 

Some of the symptoms of IBS are diarrhea, cramping, and bloating. 

According to Healthline, CBD may help to relieve IBS symptoms. CBD products with THC may actually be most effective due to the entourage effect. If you need help working out the ideal dose for you, check out our guide on CBD dosing.

It’s worth mentioning that weed may not work. A study that examined the link between cannabis and IBS says, “Despite the promising preclinical data, the efficacy of cannabinoids modulating IBS-associated abdominal pain has been difficult to prove in a clinical context at least as it relates to the use of tetrahydrocannabinol [THC and dronabinol]”

FYI some people experience diarrhea when using CBD so watch out for that as well.


Your poop probably smells like weed because you consume a lot of it and that’s how it’s excreted. Weed seems to affect poop in so many different ways. That makes sense since the endocannabinoid system affects bowel movements. Weed seems to affect the smell of your poop (and maybe your armpits), the color, and your whole pooping experience. Weed may provide you with less painful and more regular bowel movements according to science.

Do you have more burning questions around cannabis?

Email us at [email protected] with your questions/topic suggestions and we will get back to you! 


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