Freephone Advice Line
Free from mobiles & landlines
Confidential Impartial Accredited

Cannabis facts and statistics

Cannabis is the most widely used illegal drug in the UK. In this blog, Port of Call takes an in-depth look at a wide range of cannabis facts and effects in order to answer some of your most frequently asked questions surrounding marijuana.

Although the number of those using cannabis is falling, it is still the most popular illegal drug in the United Kingdom. Which is why we’ve produced this blog to educate you about current cannabis facts and statistics in the UK.

cannabis facts and statistics UK

Last year less than one in eight adults (aged 16-59), and one in five young people (aged 16-24), admitted to using cannabis. While the number of cannabis users has decreased, we still think it is important to arm you with all the latest cannabis facts and statistics, including facts about cannabis addiction.

What is cannabis abuse?

Tetrahydrocannabinol (THC) is the active chemical found in cannabis. Because it is stored in fat cells it takes longer than any other common drug to leave the body. Research shows that regular cannabis abuse tends to lead users to store the drug as body fat. That means it is flushed out much slower than in light or occasional users who seem to flush out the drug much quicker.

Infrequent cannabis smokers might find that the drug has left their bodies within a matter of days. Whereas, longer-term users are likely to still have the drug in their systems two to three months after their last smoke.

What are the side effects of cannabis?

• It can make some people feel faint or sick, known as a “whitey”.
• It might make others feel sleepy and lethargic.
• Some people find it affects their memory.
• Some people feel confused, anxious or paranoid.
• Some experience panic attacks and hallucinations.

Why is cannabis illegal?

Cannabis is illegal due to its potential long-term, detrimental health effects. It can increase the risk of developing a psychotic illness, especially if users begin smoking in their teens and have a family history of mental illness. Joints containing cannabis and tobacco are believed to contain 50 per cent more cancer-causing toxins than cigarettes made from tobacco alone. Plus, cannabis can reduce motivation and concentration and can be harmful to fertility and pregnant women, whose babies may be born smaller or prematurely if they smoked cannabis during pregnancy.

To find out more information and facts about cannabis addiction, or how to access drug rehab, please do not hesitate to get in touch with us by calling 08000029010. At Port of Call we have been there so if you, or a loved one, are dealing with addiction we can help you to access the right addiction help at the right time. Alternatively, you can email us at

Call today for free & confidential advice on 08000029010 (International: +44 161 674 9049)

Call back request

Call back Widget - Rehabs

“I wanted somewhere caring and compassionate. Not a boot camp approach. I’m sober 6 months on”

Susan from Wolverhampton

Our Promise

  • Help with the next step in tackling your addiction.
  • Support in helping a family member or colleague with an addiction.
  • The right help at the right time based on your needs.
  • A confidential assessment by an addictions specialist.
We work with all the major insurers:
Call us now