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Can Smoking Medical Marijuana Cause Diarrhea

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Dr-Weedy Medical Team Chromometer 5 min

Marijuana uses are numerous, people smoke weed to have fun, to relax, for many it is a plentiful source of inspiration, and there are lot of those who take medical cannabis to treat various health conditions. Both recreational and medical marijuana is legalized in many states, and doctors prescribe joints and edibles for many purposes:

  • first of all, to ease pain caused by cancers, digestive disorders, surgical interventions, to mitigate migraines and chronic persistent pains of uncertain etiology;
  • to relieve spasms of muscles related to multiple sclerosis, and epilepsy-induced seizures;
  • to restore healthy sleep and treat insomnia;
  • to get rid of anxiety and depression;
  • to normalize appetite and gain weight, etc.

Medical weed, both natural and synthetic one, can also be used to treat diarrhea and constipation. However, there are reports online that it can cause both, too. Let’s see where the truth lies.

Diarrhea And Weed — Is There Any Connection

Сan weed cause diarrhea?

Сan weed cause diarrhea?

The mechanisms of how marijuana induces diarrhea and other stomach problems are unclear. But these effects are proven by several studies. The Marijuana Doctors online resource says that using marijuana can lead to upset stomach and bad stool. And it does not matter if you prefer smoking weed, use oils or edibles, anything can be the reason behind sudden diarrhea.

Gastrointestinal tract is strongly influenced by the endocannabinoid system, and the substances contained in marijuana alter the functioning of ECS. Cannabinoids, THC and CBD in particular, influence the digestive system, it can cause diarrhea and be the reason for some people to stay close to the bathroom. Moreover, if you like cannabis-infused oils, you have to remember that they are sometimes very irritating for your guts.

Positive Effects of Weed

Positive Effects of Weed

In most cases, weed improves the work of our digestive system. Cannabis is very helpful in treating the inflammatory bowel disorder, ulcerative colitis, ileitis, nausea, vomiting, etc. There are several studies that provide evidence for these positive effects of weed. Scientific research showed that some patients could stop taking other drugs after marijuana administration for their GI disorders. Most of examinees reported about rarer bowel movements, lower number of daily loose stools, and alleviated abdominal pain.

Negative Effects of Weed

Negative Effects of Weed

Along with common adverse reactions to cannabis, like abnormal heart rate, dizziness, altered thinking, hallucinations, appetite changes, low blood pressure, bad mood, panic attacks, etc., in some cases we observe such gastrointestinal side effects as:

  • repeated vomiting and diarrhea;
  • nausea;
  • constipation;
  • abdominal cramps;
  • tender and painful stomach;
  • slow gastric motility, which is associated with unpleasant and painful sensations in the stomach.

All these side effects can be related to either cannabinoid hyperemesis syndrome or acute pancreatitis induced by marijuana. In both cases, it can happen only after daily heavy weed use for many years.

How to Recognize Weed-Induced Diarrhea and Constipation

Try to make observations and track your body responses to cannabis.

The symptoms of diarrhea from weed are:

  • bad stool;
  • stomach cramps;
  • frequent need to use the bathroom;
  • nausea;
  • meteorism.

Constipation from pot manifests itself as:

  • rare and hard stool;
  • going to the toilet less than thrice a week;
  • inability to empty your bowels;
  • appetite loss;
  • blocked feeling in the abdomen.

If the symptoms occur regularly, the best advice is to call for medical assistance. It is a possible reason to change your treatment plan and cease cannabis use.

Is It Serious And What Can I Do

Facing regular and bad diarrhea or constipation from weed, you should first of all make sure that these disorders are not related to other severe health problems:

  • anal fissure;
  • gastrointestinal cancer;
  • inflammatory bowel disease;
  • Crohn’s disease, etc.

When loose or hard stool is caused by weed, and there is no underlying malady, your doctor will advise you to change your diet, lower your dose of weed, or think about another form of using it — smoking instead of edibles, or vice versa. Do not forget to stay in touch with your healthcare provider and report about all changes in your body and health condition.


The cases of severe adverse effects of marijuana are very rare. There are no reported deaths caused by weed, and all side effects usually pass away with time. Problems with stool are not an exception. Diarrhea may occur, but most probably it is just a sign that you use too much weed. Talk to your doctor and follow the professional recommendations about the dosage, try to change the strain, or another form of medical cannabis. It will help you avoid the runs and enjoy weed without any negative consequences.

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  • David 2021-05-31 02:07:49
    Diarrhea was invented by the devil himself =) Thanks for the article - it was quite useful.
  • Girly Girl 2020-10-30 04:41:18
    What a greaty and insightful blog post! adding this to follow! straights ups

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