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Key Information



Marijuana (Cannabis)


(DELTA –9) Tetra-hydrocannabinol


Blow, Dope, Grass, Ganga, Hash, Pot, Weed

Cannabis is a depressant with possible hallucinogenic properties. If smoked the effects are quite quick and can last up to 3 hours. If eaten, the drug is absorbed more slowly but it’s effects can last up to 24 hours and the effects are stronger. Cannabis makes people feel more relaxed, cheerful, talkative and lazy. Users can also get the giggles and it can also cause a sudden increase in appetite (known as the munchies).


Cannabis comes in different forms.  Hash is a black or brown lump made from the resin of the plant. It''s quite often squidgy. In the past, this was the commonest form of cannabis in the UK, but this is no longer the case.  Much less common is cannabis oil, made by separating the resin from the cannabis plant using various solvents. It is a sticky, dark honey-coloured oil.  Cannabis can be smoked rolled into cigarettes (joints) or inhaled through pipes and it can be eaten (in hash cakes).                    

HEALTH RISKS (long term) which includes withdrawal & tolerance:

The biggest risk comes from the actual smoking as it can increase the likelihood of cancer by up to 5 times more than that of smoking ordinary cigarettes as well as other respiratory problems. Can also affect concentration and reaction times so it increases the chance of having an accident. Other risks include depression and anxiety. It also has an impact on fertility, the immune system and users memories. Users are often described as lethargic and apathetic.  No physical withdrawal symptoms have been reported but heavy users may experience restlessness and depression. There is also the possibility of psychological disturbance with heavy use but this is rare. Psychological dependence is more likely.


Cannabis is a Class B drug - illegal to have, give away or sell. Possession can get you up to five years in jail. Supplying someone else, including your friends, can get you fourteen years and an unlimited fine.

  1. Cannabis nowadays is over 500 percent more powerful than it was ten years ago, the dangers of smoking Cannabis are much more serious than they were in the 1960s.
  2. Cannabis smoke causes cancer more than cigarette smoke. In fact, because Cannabis smokers try to hold the smoke in their lungs as long as possible, one Cannabis joint can be as damaging to the lungs as four tobacco cigarettes.
  3. There are more than 400 chemicals in the average Cannabis plant.
  4. The active chemical in marijuana can stay in the body 14 days after smoking a joint. Even after a person has stopped smoking, Cannabis stays in their body and can still affect their ability to do things like drive, play sports, or do well on tests in school.
  5. Cannabis is a drug that impairs. For example, it impairs attention and memory and hinders the ability to learn or solve problems. It impairs decision making which can lead users to use bad judgment or get into dangerous situations.
  6. Cannabis is by far the world's most commonly used illicit drug and far more dangerous than most users realise.
  7. Users fall short on memory as well as math and verbal skills.
  8. Cannabis also affects hormones. Regular use can delay the onset of puberty in young men and reduce sperm production.
  9. For women, regular use may disrupt normal monthly menstrual cycles and inhibit ovulation.
  10. Cannabis has been shown to be effective in reducing the nausea induced by Cancer chemotherapy, stimulating appetite in AIDS patients, and reducing intraocular pressure in people with Glaucoma.
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