Reviewed and updated: August 2026
Yes, cannabis can be addictive. Continued frequent or heavy use can cause tolerance, physical dependence and cannabis use disorder. Not everyone who uses cannabis develops a problem, but risk rises with daily use, high-THC products and starting during adolescence. Withdrawal can occur when a regular user stops or sharply reduces use.
What is cannabis addiction?
Cannabis use disorder is a pattern of use that causes significant impairment or distress. Warning signs include using more than intended, unsuccessful attempts to cut down, cravings, giving up important activities, continuing despite harm and failing to meet responsibilities at home, school or work.
Health Canada estimates that about 1 in 11 people who use cannabis will develop an addiction. The estimate rises to about 1 in 6 among those who started as teenagers and can be substantially higher among daily users.
What is cannabis dependence?
Physical dependence means the brain and body have adapted to regular cannabis exposure. When use stops, withdrawal symptoms may appear. Dependence and addiction overlap but are not identical: someone may experience withdrawal without meeting every criterion for cannabis use disorder.
What is tolerance?
Tolerance is the need for a larger dose to produce effects previously achieved with less. Increasing the dose or moving to higher-THC products can increase adverse effects and reinforce problematic use.
What happens when a regular user stops?
Possible withdrawal symptoms include irritability, anxiety, restlessness, sleep problems, vivid dreams, reduced appetite, depressed mood, headache, sweating, chills and stomach discomfort. Symptoms often begin within the first few days. Their duration and intensity vary with frequency, dose, product potency and the individual.
Withdrawal is usually not medically dangerous in the way withdrawal from alcohol or benzodiazepines can be, but it can be distressing and can contribute to relapse. People with severe symptoms, mental-health concerns, pregnancy or other medical conditions should seek professional advice.
How can someone lower their risk?
- Delay initiation, especially during adolescence.
- Avoid daily or near-daily use.
- Choose lower-THC products and avoid escalating potency.
- Track dose and frequency.
- Do not use cannabis as the only way to manage sleep, stress or mood.
- Ask a healthcare or addiction professional for help if cutting down is difficult.
Frequently asked questions
Is cannabis only psychologically addictive?
No. Health Canada states that continued frequent and heavy use can cause physical dependence and addiction.
Does a tolerance break prove someone is addicted?
No. Tolerance alone does not establish addiction, but rapidly rising tolerance can be a reason to reassess use.
Where can Canadians get help?
A family doctor, nurse practitioner, pharmacist, local addiction service or provincial health line can help. Call 911 for an immediate safety emergency.
Primary sources: Health Canada, “Addiction to cannabis”; Health Canada, “Is cannabis addictive?”
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