By definition, a Bipolar Disorder is an illness that causes an abnormal variation in someone’s mood: alternating periods of excitement (mania or in its less severe form of hypomania), depression, and average humour (normothymia).

These phases are out of proportion and can reach incredible and uncontrollable intensities. Even today, researchers still have difficulty explaining the causes of bipolar disorder. Anyway, it associates both genetic and environment factors, such as the use of drugs or stimulants, stress and lack of sleep.

Bipolar disorder Symptoms

There are multiple symptoms, so they are classified into two categories:

  • the symptoms of the depressive phase : feeling of sadness, anxiety, guilt, anger, isolation, despair, concentration disorders, sleep disorders, appetite disorders, fatigue, social withdrawal, loss of interest in pleasure, depersonalization, aggressiveness, lack of concentration, and suicidal thoughts.
  • and symptoms of the excitement or mania phase: increased self-esteem, euphoria, delusions of grandeur, reduced need for sleep, distractively, tendency to have more very ambitious projects, sexual and social disinhibition.

There are two classic main treatments to improve the general condition of patients with bipolar disorder: psychotherapies and psychotropic drugs sometimes combined with antipsychotics, which stabilize mood at a liveable level.

Medical Cannabis and bipolar disorder

The first studies on the effectiveness of therapeutic cannabis in fighting bipolar disorder were not very positive. Indeed, in a 2015 publication, researchers demonstrated that cannabis could increase an early emergence of symptoms, and suicide attempt. However, this was not true for all patients, which made the study not very conclusive.


More recently, other studies have been conducted and have been somewhat more positive. Some people with bipolar disorder have reported that the symptoms of their disorder have actually shrunk, in conjunction with regular cannabis use.[2]

To conclude, it is complicated to establish a truth today about the effectiveness or not of cannabinoids for the treatment of bipolar disorder. Nevertheless, new studies are currently being conducted.

Did you like the post? Give us some feedback! This post has been done based on existent research to the date of publication of the article. Due to the increase in studies based on medical cannabis, the information provided can vary over time and we’ll keep informing in further writings.

[1] Torres, Rafaela et alt. The Use of Cannabis as a Predictor of Early Onset of Bipolar Disorder and Suicide Attempts. Neural Plasticity. Volume 2015, Article ID 434127, 13 pages

[2] Sagar KA, Dahlgren MK, Racine MT, Dreman MW, Olson DP, Gruber SA (2016) Joint Effects: A Pilot Investigation of the Impact of Bipolar Disorder and Marijuana Use on Cognitive Function and Mood. PLoS ONE 11(6): e0157060.