Known Street Names
Most commonly abused drug in Nigeria, reduces IQ by up to 8 points when used before age 18.
⚠️ If you or someone you know needs help now: Call 112 (emergency, free).
Cannabis (also called marijuana, weed, or "igbo" in Nigerian slang) is derived from the Cannabis sativa plant and contains the psychoactive compound THC (tetrahydrocannabinol). It is the most widely abused illicit substance in Nigeria and accounts for the majority of NDLEA seizures nationwide. In Southeast Nigeria — particularly Imo, Anambra, and Enugu states — cannabis is deeply woven into social settings among male youth, frequently shared at gatherings, "studies" sessions, and street corners. Its normalisation in popular music and peer culture makes it especially dangerous: young people often underestimate its capacity for addiction and long-term harm.
The adolescent brain is particularly vulnerable to cannabis. The brain continues developing until age 25, and THC directly disrupts the endocannabinoid system — a network of receptors responsible for memory formation, motivation, learning, and emotional regulation. Studies published in the Proceedings of the National Academy of Sciences found that persistent cannabis use beginning before age 18 was associated with an average IQ decline of 8 points by age 38 — a drop that was not recovered even after stopping use in adulthood. For a student preparing for WAEC, JAMB, or university examinations, this is a devastating consequence.
Progression from casual to dependent use is faster than most users expect. Approximately 9% of all cannabis users develop Cannabis Use Disorder — a figure that rises to 17% for those who begin in adolescence, and as high as 50% for daily users. Dependency manifests as an inability to concentrate, study, or relax without using the substance. Withdrawal symptoms — insomnia, irritability, appetite loss, and anxiety — make quitting without support extremely difficult. Many users trapped in this cycle move to stronger substances to escape the discomfort of cannabis withdrawal.
Cannabis also functions as a gateway drug in the Nigerian context. NDLEA data consistently show that the majority of hard drug users in Nigeria began with cannabis. The networks used to purchase cannabis routinely expose users to dealers who also supply tramadol, codeine, and in some regions, crystal methamphetamine. The social normalisation of cannabis use desensitises users to drug-taking behaviour broadly, lowering psychological barriers to experimenting with more dangerous substances.
Cannabis is a Class B controlled substance in Nigeria under the NDLEA Act. Possession carries up to 25 years imprisonment. Trafficking carries a minimum of 15 years. Cannabis accounts for over 60% of all NDLEA seizures nationally. Despite some international decriminalisation trends, Nigerian law remains strict and enforcement is active.
Key Statistic
“Cannabis is the most seized drug in Imo State — accounting for over 60% of all NDLEA seizures in Southeast Nigeria”
Source: NDLEA Annual Report 2022
If you recognise these signs in someone you know, approach with care and support, not judgment.
🌿 Body Impact — Before & After
Cannabis Dims Your Mind — Permanently
Alert, motivated, full brain function
Motivation gone, memory fading, IQ declining
Visible Changes After Regular Use
Visual Guide
How Cannabis Attacks Your Body
Every glowing region is being actively damaged. Tap the timeline stages to see what happens over time.
Addiction Speed
Moderate–HighBrain Regions Attacked
Reward System
Hijacks dopamine — creates intense craving and compulsion
Decision Making
Impairs judgment, impulse control, and risk assessment
Memory Centre
Disrupts learning, recall, and memory formation
Brainstem (Vital)
How Damage Progresses Over Time
Tap any stage to see what happens
The Fact That Changes Everything
“Regular cannabis use before age 18 is linked to an average permanent IQ loss of 8 points — not recovered after quitting.”
— Source: Proceedings of the National Academy of Sciences, 2012
Talk to someone you trust — a counsellor or a doctor. Stopping suddenly after heavy use can cause anxiety, insomnia, and irritability — professional support makes it significantly easier. This is a medical issue, not a character flaw.
Emergency, Medical Crisis
Call 112Call 112 if this is a medical emergency right now, unconscious, stopped breathing, or seizure.
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