Ganja Addiction: What Cannabis Does to the Brain, and How De-Addiction Works

All of them come from the same plant, Cannabis sativa. What changes is the part of the plant used, how it is prepared and how strong it is. In English, ganja is simply cannabis or marijuana, and "weed" is the everyday slang for the same thing.

The active compound in all of them is THC (delta-9-tetrahydrocannabinol). THC produces the high, and THC is also what the brain adapts to once use becomes regular. Bhang is eaten rather than smoked, which changes both how the intoxication feels and what the risks are. It has its own page: bhang side effects and treatment.

Yes, ganja and charas are illegal in India. The Narcotic Drugs and Psychotropic Substances (NDPS) Act, 1985 prohibits producing, possessing, selling and consuming cannabis. The Act defines cannabis as ganja (the flowering tops), charas (the resin) and any mixture of the two.

Bhang is the exception. The Act's definition leaves out the leaves and seeds when they are not accompanied by the flowering tops. Bhang is made from the leaves, so it falls outside the central ban. State excise laws regulate it instead, which is why some states have licensed bhang shops and others ban it outright.

"Traditional" or "legal" does not mean safe: the law regulates trade, not brain chemistry. And fear of the law should not stop a family from seeking help. Asking for treatment is a confidential medical consultation.

Within minutes to hours (intoxication):

• Euphoria and relaxation, laughing easily, a distorted sense of time
• Hunger, red eyes, dry mouth, a faster heartbeat
• Slower reactions and poorer coordination, which makes driving dangerous
• In some people, especially with strong ganja or charas: anxiety, panic, paranoia or frightening changes in perception

Ganja pine se kya nuksan hota hai: the harms of regular use:

• Memory and learning. THC acts on the hippocampus, the brain's memory centre. Studies, work output and recall often suffer.
• Motivation. Clinicians see persistently low drive and flattened ambition in people who use every day.
• Mental health. Regular use is linked to anxiety, low mood and, in vulnerable people, psychosis.
• Lungs. Smoked ganja and charas harm the airways, as any smoked substance does.
• Dependence. Some users lose the ability to choose, and the risk is higher for those who start young or use daily.

The so-called "ganja peene ke fayde", such as relaxing or sleeping better, are short-term drug effects, which is exactly why the brain learns to demand them. Recreational ganja has no medically endorsed benefit, and "it helps me sleep" is a common route into dependence.

The brain keeps developing until the mid-twenties. The last region to mature is the prefrontal cortex, which handles judgement, impulse control and planning. THC interferes with the endocannabinoid system that helps wire this development. A teenager who starts using is therefore more likely to become dependent than someone who starts as an adult. They also face more risk to memory, studies and mental health, including psychosis.

For parents, watch for falling marks or work, new friends and secrecy, red eyes, unexplained spending, and losing interest in things your child used to care about. None of these proves cannabis use. They do justify a calm conversation and, if needed, a professional assessment. For help with that conversation, see our guide for families and caregivers.

Worried about a teenager or family member? Call 96111 94949, 24/7. A triage clinician will listen and tell you honestly whether what you describe needs an assessment.

Yes. "Weed is not addictive" is a myth born of comparing it with the more dramatic withdrawal from alcohol or opioids. Cannabis use disorder is a recognised diagnosis, coded F12 in ICD-10 (see our ICD-10 guide to substance use disorders). Cannabis withdrawal is real too: irritability, poor sleep, vivid unpleasant dreams, restlessness, low appetite and strong cravings, usually worst in the first week after stopping.

Is this you, or someone you love? If three or more of these have been true over the past year, it is time for a professional assessment:

• A strong craving or compulsion to use ganja, charas or weed
• Difficulty controlling when you start, when you stop or how much you use
• Withdrawal symptoms when you stop, which go away when you use again
• Needing more to get the same effect
• Studies, work or relationships steadily pushed aside for use
• Carrying on despite clear harm: failing marks, warnings at work, family conflict, low mood, paranoid episodes

Dependence is about losing control and carrying on despite harm, not about how often friends use or any moral judgement. You can also take our addiction self-assessment.

Cannabis-induced psychosis means paranoia, hallucinations, disorganised speech or fixed false beliefs during or after cannabis use. The risk rises with high-potency charas, heavy daily use, starting young and a family history of psychotic illness.

Psychosis with ongoing substance use is a dual problem, and the order of treatment matters. Where substance use is present, the person starts in Anunitha's Dual Diagnosis Programme. The dependence is treated there while psychiatric symptoms are managed and monitored. If a significant psychiatric illness remains once the person has been abstinent and stable, psychiatric rehabilitation at Cadabams Amitha, Anvita or Ananya (chosen with the family) follows as a step-down. It never replaces de-addiction. Read more on drug-induced psychosis and recovery.

If someone is paranoid, hallucinating or behaving dangerously right now, treat it as a psychiatric emergency. Cadabams Hospitals handles those. Call 96111 94949 and the team will guide you on the next step.

Cannabis dependence seldom comes alone: low mood, anxiety, attention difficulties, early psychosis or alcohol are often found alongside it. Good cannabis addiction treatment looks at the whole person, and the family, from day one.

Step 1: A careful assessment

Everything starts with an assessment of the person's use, physical and mental health, risk, insight and support at home. Our triage team, led by Dr. Anita, uses this to decide the right entry point. If you are unsure whom to see first, our page on which doctor to consult for addiction explains the options.

Step 2: Hospital detox, only if it is needed

Many people with cannabis dependence do not need hospital detoxification. Their withdrawal can be managed within the programme. Detox is advised when withdrawal is severe, when alcohol or other substances are also involved, or when psychiatric symptoms need close watching. In those cases, a medically supervised 5–7 day detox at Cadabams Hospitals comes first, to stabilise sleep, mood and physical health so that rehabilitation can begin. If alcohol is part of the picture, read about alcohol withdrawal symptoms, which, unlike cannabis withdrawal, can be medically dangerous.

Step 3: One of three Anunitha programmes

Cadabams Anunitha has 100 beds: 90 for men and a 10-bed women's centre. The programme is led by Mrs. Raji Raj, Programme Head, and Soujanya, Senior Counsellor and Coordinator, leads the women's de-addiction services. There are exactly three programmes:

How the programme is chosen. The assessment chooses it, not the number of days a family would like. The team weighs the clinical condition, the level of addiction, risk, the person's insight into their use and the support around them, then recommends a programme and explains why.

What happens inside every programme:

• Individual therapy using Cognitive Behavioural Therapy (CBT) and Motivational Enhancement Therapy
• Group therapy with peers working through the same questions
• Coping-skills and cue-management work: recognising the people, places, moods and routines linked to smoking, and planning new responses
• 12-Step work (AA/NA), yoga and relaxation
• An Individualised Recovery Plan that follows the person from admission to discharge

Relapse prevention is not a separate course. It runs through every session and continues into aftercare.

Step 4: Family therapy

In cannabis dependence, and especially with young adults, the family's understanding of the condition carries great weight. Family therapy, guided by Dr. Swarupa, Consultant Family Therapist and Psychiatric Social Worker, helps families step out of the cycle of anger, rescuing and silence. They learn what dependence is, how to set steady boundaries and how to support recovery at home without policing it.

Step 5: A planned discharge

Discharge is never abrupt. Planned leave of absence lets the person rehearse life at home and return to work through what was hard, so triggers surface in rehearsal rather than all at once.

Want to understand which programme might fit? Call 96111 94949, 24/7. The triage team will talk you through assessment, admission and what to expect.

The months after leaving the centre are when recovery is most tested. Reach Out, our post-discharge care programme, keeps the treating team involved. It is coordinated by Anandhu, Senior Counsellor and After-Care Services Coordinator.

• Early Recovery (roughly the first 3 months). This is the 90-day critical window: moving back home, adapting to old surroundings without ganja, and building early maintenance habits.
• Maintenance (up to 2 years). Contact tapers as the new routines hold.
• Where sessions happen. At home, at a Cadabams facility, by phone or by video.

Reach Out is recommended for everyone who completes a programme. Whether to join is the family's choice.

A lapse is a single use after a period of abstinence. A relapse is a return to the old pattern of use. A lapse caught early is information, not failure: it shows which trigger or mood needs more work. Talk about it openly, contact the Reach Out team and adjust the plan. Shame and secrecy do more damage than the lapse itself.

If tobacco is part of the picture, see quitting smoking in recovery.