After clearing the smoke on common cannabis misconceptions in our last blog, it’s only fair we dive deeper into what science and real-world data actually say. Myths continue to shape public perception—even after years of legalization and countless studies proving cannabis can be a safe and effective treatment when used properly. This time, we’re setting the record straight with facts backed by Health Canada and clinical research.

Myth: Cannabis isn’t addictive — it’s perfectly safe.
Fact: Regular or frequent use of THC, especially daily, can lead to cannabis dependence or a mild use disorder. Health Canada notes that about 1 in 11 users may develop dependency symptoms, such as cravings, restlessness, or sleep issues when trying to stop. This is why medical users are encouraged to consult cannabis educators and licensed physicians before starting or changing doses.

Myth: Cannabis use doesn’t affect mental health — it only helps with anxiety or depression.
Fact: While many patients find relief, heavy or frequent cannabis use can increase risks of anxiety, depression, or even psychosis in vulnerable individuals. Those with a family history of schizophrenia or mental health conditions should always seek medical guidance. At GrowLegally, patient educators help create safe treatment plans tailored to individual health needs.

Myth: Smoking cannabis is harmless to the lungs.
Fact: Cannabis smoke contains many of the same harmful toxins as tobacco smoke. Long-term smoking can cause chronic bronchitis, coughing, or lung irritation. Vapourizing or using oils are safer alternatives. You can learn more about this in our related blog, Safe Ways to Consume Medical Marijuana.

Myth: Cannabis makes people lazy and unproductive.
Fact: This is a stereotype. Many medical cannabis patients in Canada lead active, productive lives. When prescribed correctly and used under supervision, cannabis can help patients manage pain, sleep, or mental health conditions without affecting motivation.

Myth: Medical and recreational cannabis are the same.
Fact: Medical cannabis is grown and tested under strict Health Canada regulations. Products are standardized, doses are controlled, and use is supervised by healthcare professionals. Recreational cannabis lacks this level of oversight. Patients seeking legal, medical-grade cannabis can apply for a Personal Grow Licence under Health Canada’s ACMPR framework.

Myth: Cannabis is safe for everyone — even youth and pregnant women.
Fact: Cannabis use during pregnancy or adolescence carries higher risks. THC can cross the placenta and enter breast milk, which may impact fetal development. For youth, cannabis may affect brain development and memory. Medical authorization should only be granted by a qualified doctor after reviewing all health factors.

Myth: Using cannabis won’t impair driving.
Fact: Cannabis slows reaction time, affects coordination, and reduces attention span. Driving under the influence is illegal in Canada, even for medical users. Always plan ahead if medicating before travel.

Myth: You can freely travel with cannabis, even for medical use.
Fact: Travelling internationally with cannabis, including medical cannabis, is illegal. You need an official Health Canada exemption to cross borders with it. GrowLegally helps patients apply for cannabis travel permits for special medical cases.

Myth: Cannabis is a gateway drug.
Fact: Research shows no causal link between medical cannabis use and harder substances. In fact, many patients reduce dependence on opioids and other prescription drugs with cannabis therapy. Veterans, in particular, have found success through the Grow Vets program, which provides free application help for PTSD-related treatment and grow licences.

Final Thoughts

Misinformation can prevent patients from accessing safe, legal treatment. Education and professional support are key. If you’re considering medical cannabis, speak with a cannabis-trained doctor or educator. GrowLegally’s medical cannabis clinic in Toronto and network across Canada can guide you through your authorization, renewal, or licence application. Visit GrowLegally.ca to learn how to access medical cannabis safely, legally, and confidently.