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Selling It Right: Cannabis and health

THC and CBD, product forms, onset of inhaled and edible cannabis, overconsumption, mixing with alcohol, youth and mental health, pregnancy and Canada's lower-risk guidelines.

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Cannabis and health · Question 1Score 0/0

Up to what age does B.C. say the brain develops rapidly, making youth more vulnerable?

Study reference: B.C. cannabis law and LCRB guidance (Oct 2026), Ch. 9 Cannabis and health — gov.bc.ca Cannabis and your health; Health Canada Consumer information; Canada's Lower-Risk Cannabis Use Guidelines

All 13 questions in this test

Every question and its answer choices. The correct answers and explanations appear when you take the test above.

  1. Up to what age does B.C. say the brain develops rapidly, making youth more vulnerable?

    1. 25
    2. 16
    3. 40
    4. 12

  2. How long can it take to feel the full effect of an edible, according to B.C.?

    1. Only the next day
    2. Up to four hours
    3. About five minutes
    4. Exactly 30 minutes

  3. What happens when alcohol and cannabis are combined?

    1. There is no change at all for experienced regular users
    2. The effects of cannabis start later and last less time
    3. Alcohol cancels out the effect of THC in the body
    4. Alcohol can intensify the effects and cause nausea

  4. Which cannabinoid causes the 'high' from cannabis?

    1. Resin
    2. Terpenes
    3. CBD
    4. THC

  5. Do B.C.'s non-medical cannabis rules apply to CBD products?

    1. No, CBD products may be sold at gas stations and grocery stores
    2. Only if the CBD contains THC
    3. No, CBD can be sold to anyone
    4. Yes, all the same prohibitions apply to CBD

  6. A first-time customer asks how to avoid a bad experience. What does B.C. guidance suggest?

    1. Take a second dose right away
    2. Mix it with a drink to feel it faster
    3. Start with a concentrate, since it gives better value per gram
    4. Start with a low dose or a low-THC product

  7. According to Canada's lower-risk guidelines, who should not use cannabis at all?

    1. Anyone who has already used cannabis at least once before
    2. Anyone over 50 who drinks coffee or tea every morning
    3. Anyone who lives with a roommate who does not use cannabis
    4. Pregnant people and those with a history of psychosis

  8. A customer says a friend took too much and feels very unwell. Which resource can you point to?

    1. 1-844-POISON-X, 9-1-1 or the nearest hospital
    2. The LCRB's licensing and inspection office line
    3. The licensed producer's customer hotline only
    4. Waiting it out at home and drinking more water

  9. How quickly can the effects of inhaled cannabis begin?

    1. Only after a full day
    2. After 30 minutes to 2 hours
    3. After about 4 hours
    4. Within seconds to minutes

  10. Which practice lowers risk for someone who chooses to smoke cannabis?

    1. Avoid inhaling deeply or holding the breath
    2. Mix it with tobacco to reduce THC
    3. Smoke daily in small amounts
    4. Hold the smoke in the lungs for as long as possible each time

  11. Which products are more likely to cause dependency and other harms?

    1. Higher-THC products such as concentrates
    2. Cannabis-themed books and printed apparel
    3. High-CBD, low-THC products sold in small packs
    4. Topical lotions that contain no THC at all

  12. Why is illicit cannabis riskier than legal cannabis?

    1. It always contains less THC than legal cannabis does
    2. It is tested more often by Health Canada inspectors
    3. It comes with clearer dosing labels than legal products
    4. It may contain pesticides or mould, and false THC claims

  13. What can daily or near-daily cannabis use increase the risk of?

    1. Better long-term memory
    2. Psychosis and schizophrenia
    3. Faster brain development
    4. Lower anxiety and depression

Cannabis and health: key rules to remember

Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗

Cannabis and your health

  • Cannabinoids become active with heat; THC causes the "high"; unpleasant effects may be greater with higher THC.
  • CBD does not cause a high or intoxication and may have therapeutic effects; in B.C. all non-medical cannabis rules apply to CBD products too.
  • Cannabis can be inhaled, ingested, applied to skin or taken under the tongue; forms include dried flower, pre-rolls, edibles, extracts/vape cartridges, resins (hash, shatter), oils and tinctures.
  • Edibles have a delayed onset and longer effects; it can take up to four hours to feel the full effect.
  • Starting with a low dose or low-THC product helps avoid overconsumption, which can cause anxiety, paranoia and rapid heartbeat.
  • Higher-THC products like concentrates are more likely to cause dependency and other harms.
  • Alcohol intensifies cannabis effects and can cause nausea or vomiting, even in experienced users.
  • Long-term regular use can raise the risk of anxiety or depression; daily or near-daily use can increase the risk of psychosis and schizophrenia.
  • The brain develops rapidly through the first 25 years; youth are at higher risk of psychosis than adults.
  • Cannabis use in pregnancy can harm the baby.
  • Medical cannabis is regulated federally by Health Canada; a health care provider authorizes it.

Consumer information: Cannabis (2025)

  • Inhaled: effects begin in seconds to minutes; ingested: 30 minutes to 2 hours.
  • Delayed onset of ingested cannabis can lead to overconsumption and cannabis poisoning.
  • If someone overconsumes and feels unwell: 1-844-POISON-X (1-800-463-5060 in Quebec), 9-1-1 or a hospital.
  • Store all cannabis out of reach of children and pets, in child-resistant packaging; edibles can poison children.

Canada's Lower-Risk Cannabis Use Guidelines

  • Not using is the most effective way to avoid risk; delay use until after adolescence.
  • Choose low-THC, higher-CBD products; avoid synthetic cannabinoids.
  • Avoid smoking burnt cannabis; avoid deep inhaling or breath-holding.
  • Limit to occasional use; do not drive for at least 6 hours.
  • People with a personal or family history of psychosis or substance use disorder, and pregnant people, should not use.

Buy legal cannabis

  • Illicit cannabis can contain pesticides, mould, bacteria or heavy metals, and THC/CBD claims may be false.

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