Cannabis is the most widely used illicit drug (a controlled drug which is prohibited if not used medicinally) globally. The rising global acceptance of cannabis for both recreational and medicinal use has been driven by its widespread legalisation and therapeutic potential. However, dependence and withdrawal symptoms present a range of challenges for a significant number of users who try to quit or reduce consumption. These challenges emphasise the critical role of mental health support during the withdrawal process.

In this article, we will explore cannabis withdrawal, the importance of addressing mental health during this period and discuss effective strategies for managing the psychological and emotional aspects of recovery.

Understanding cannabis withdrawal

Although cannabis is often considered a “soft drug”, a sudden reduction or cessation after prolonged use can lead to cannabis withdrawal syndrome (CWS), a diagnosis listed in the American Psychiatric Association’s Diagnostic and Statistical Manual of Mental Disorders- Fifth Edition (DSM-5).¹  Symptoms usually include mood and behavioural disorders and range in severity from mild to moderate.¹ Common symptoms include:

• Irritability
• Anxiety
• Sleep disturbances
• Loss of appetite or weight loss
• Depression
• Other physical symptoms (e.g. nausea, headache, stomach pain, tremors, twitching, sweating, chills or fever)

CWS is diagnosed if at least three of the above symptoms arise within a week of stopping or reducing cannabis consumption abruptly.¹ Other symptoms of CWS include:

• Restlessness
• Aggression or anger
• Trouble concentrating
• Fatigue
• Sweating, chills or fever
• Runny nose or eyes
• Mood swings
• Cannabis cravings

Withdrawal symptoms stem from the brain’s adaptation to the presence of THC, tetrahydrocannabinol (THC), cannabis's psychoactive compound.² Chronic use alters the brain’s endocannabinoid system, which regulates mood, sleep, appetite and stress response by hindering endocannabinoid signalling.² When cannabis use stops abruptly, the brain struggles to restore its natural balance, leading to withdrawal symptoms.

Symptoms typically begin 24–48 hours after stopping and are most severe 2–6 days later, with some symptoms lasting up to 3 weeks or even longer with heavy cannabis usage.⁶ 

Though cannabis withdrawal is generally not life-threatening and can be safely carried out in an outpatient setting, it can be highly distressing and disruptive, especially for those with pre-existing mental health issues. There is also an increased risk of use of other substances, such as alcohol or nicotine, to relieve withdrawal symptoms.³ Without adequate support, individuals may relapse or develop more severe psychological complications.

The psychological impact of cannabis withdrawal

The mental health challenges of cannabis withdrawal can be profound. Anxiety, depression and irritability often intensify during this period. For individuals who use cannabis as a coping mechanism for stress, trauma or mental health conditions, the absence of this "self-medication" can magnify underlying issues and potentially disrupt important aspects of daily life, such as work or relationships.

Anxiety and mood dysregulation

Anxiety, depression and the inability to regulate mood and emotions are common symptoms of cannabis withdrawal. Studies show that cannabis use alters the amygdala, hippocampus and pallidum– areas of the brain associated with emotion regulation, memory, as well as reward and addiction processes.⁴ During withdrawal, these areas exhibit heightened sensitivity, making individuals more prone to emotional distress, irritability, anger and anxiety, as cannabis use can provide temporary relief for anxiety and emotional disorders.⁴ The absence of cannabis, which some individuals use to numb or manage emotions, leaves them vulnerable to overwhelming feelings of stress, sadness, or anger. Long-term use may contribute to worsened symptoms during withdrawal.

Sleep disturbances

Insomnia and vivid dreams are hallmarks of cannabis withdrawal. Sleep disorders tend to be severe during withdrawal.⁵ Sleep disruptions further exacerbate anxiety and irritability and can, in turn, lead to a range of physical and mental health issues. This results in a cycle of poor rest and potential mental health issues. Research suggests that sleep disruptions during withdrawal are linked to errors in endocannabinoid signalling and a high chance of relapse.⁷ There are even documented instances of poor sleep during cannabis withdrawal being linked to suicidal ideations and self-harm.⁵  

Hallucinations and psychosis

Hallucinations, psychosis and delirium during cannabis withdrawal, though rare, can occur in individuals with a history of heavy or prolonged use. These symptoms arise as the brain adjusts to the absence of cannabinoids, which it had become dependent on, leading to abnormal signalling.⁹ Hallucinations may include vivid visual or auditory experiences, while psychosis can involve paranoia, delusions, or disorganised thinking. Such episodes are typically temporary, lasting a few days to weeks, and are more common in those with preexisting mental health conditions.⁹ 

Click here to read a detailed account of psychosis during cannabis withdrawal.  

Cravings and relapse risk

Cannabis cravings during withdrawal can be intense and are often worsened by psychological triggers after sudden cessation. Relapse remains the greatest risk to individuals in recovery, with the added risk of turning to other potentially more harmful or addictive substances to cope.⁶ Stressful situations, depression, anxiety, psychosis, social cues or environmental associations with cannabis use can spark cravings, making relapse a significant risk without adequate mental health support.⁶

Why mental health support is essential during cannabis withdrawal

Mental health support is essential for successful cannabis withdrawal as it not only addresses withdrawal symptoms but also equips individuals with tools to manage underlying psychological conditions and maintain long-term recovery after withdrawal.

Addressing emotional instability

Professional support helps individuals process the emotional dysregulation which accompanies withdrawal. Therapeutic techniques, such as cognitive-behavioural therapy (CBT), teach individuals to identify and alter negative thought patterns and emotions as well as learn coping mechanisms to use when faced with the temptation to relapse.⁹ 

Preventing relapse

Mental health support offers relapse prevention strategies, such as:

• Mindfulness
• Stress management
• Symptom recognition and management
• Problem-solving techniques
• Social skills and positive lifestyle/environmental changes
• Assertiveness in high-risk situations  

Treating pre-existing mental health disorders

Many individuals who struggle with cannabis dependence have pre-existing mental health disorders, such as anxiety, depression or post-traumatic stress disorder (PTSD). Adequate support ensures that these conditions are not overlooked during withdrawal, which significantly improves outcomes during recovery.¹⁰

Strategies for supporting mental health during withdrawal

Therapeutic interventions

Therapies Including:

• Cognitive-behavioural therapy (CBT): Address and manage thoughts and behaviour
• Motivational enhancement therapy (MET): Addresses motivation to change habits

CBT and MET help individuals to manage cannabis withdrawal and dependence with the support of a trained professional. These methods focus on changing thought patterns, finding motivation for change and addressing emotional challenges.¹¹ 

Peer support groups

Peer support programs, such as Marijuana Anonymous UK, provide a sense of community and shared experience. They offer a platform for individuals to express their challenges and learn from others in similar situations.

Mindfulness and stress reduction techniques

Mindfulness-based stress reduction (MBSR) and meditation can help reduce withdrawal-related anxiety and improve emotional regulation. Studies suggest that mindfulness practices enhance the brain’s ability to manage stress and cravings.¹²

Pharmacological support

While there are no approved medications specifically for cannabis withdrawal, certain medications, such as pain relief for aches and pains, selective serotonin reuptake inhibitors (SSRIs) for anxiety or sleep aids for insomnia, may be prescribed on a case-by-case basis to alleviate symptoms.⁶ It is advised that this be done under the supervision of a medical professional.

Lifestyle adjustments

A balanced diet, quality sleep, regular exercise, and adequate hydration can help improve mood during withdrawal. Moderate physical activity, in particular, has been shown to boost endorphin levels and reduce cannabis cravings.¹³

Addressing stigma and encouraging help-seeking behaviour

Despite increasing awareness of cannabis dependence and withdrawal, stigma remains a barrier to seeking help. Many people underestimate the challenges of quitting cannabis, believing it to be harmless with minimal withdrawal effects. This misconception can discourage individuals from reaching out for the support they need. Public education campaigns and open dialogue can help normalise seeking help for cannabis-related challenges. Additionally, policies which decriminalise seeking help for cannabis addiction would encourage a shift from thinking of addiction as a personal failure to thinking of it as a medical condition.

Improving access to care

Education is the key to reducing stigma. Public health campaigns should highlight the reality of cannabis withdrawal and emphasise the importance of mental health support. Normalising conversations about cannabis dependence can encourage more people to seek help. Mental health resources must be accessible and affordable. Examples of ways to improve access to care include:

• Online rehabilitation programs
• Community-based programs
• Financial support during recovery

Summary

Mental health support during cannabis withdrawal is vital for effective, long-lasting outcomes. The psychological challenges of withdrawal, combined with underlying mental health conditions, make professional support and therapeutic interventions essential for a successful recovery. By addressing the emotional and psychological aspects of withdrawal, individuals not only overcome dependence but also create a healthier, more fulfilling life for themselves.

As society continues to embrace the complexities of cannabis use, it is crucial to extend compassion and understanding to those navigating withdrawal. Seeking help should not be considered a sign of weakness or a crime, but a bold step toward growth and healing.

Frequently asked questions

Can cannabis withdrawal cause psychosis?

Though rare, psychosis can develop during cannabis withdrawal following abrupt cessation, especially if cannabis use was heavy before withdrawal.

What are the common mental health implications of cannabis withdrawal?

Anxiety, irritability and depression are common mental health disorders which may arise during cannabis withdrawal

Can medical cannabis help with mental health?

Medical cannabis, obtained through a healthcare professional, can be used to improve mental health conditions such as anxiety, sleep disorders and depression.

How to cope with withdrawal symptoms?

• Seek help: It is important to have support, whether you are dealing with withdrawal on your own or under medical supervision
• Prioritise a healthy lifestyle: Sleep, proper nutrition, and good hydration can all potentially help improve withdrawal symptoms
• Get medication: Over-the-counter medication for symptoms like headache, nausea or stomach ache, or prescription medication for more serious symptoms can help with coping during withdrawal

When do withdrawal symptoms peak?

Symptoms usually begin 24–48 hours after cessation and are most severe after 2–6 days. Some symptoms last up to 3 weeks or even longer in heavy cannabis users.