Do effects remain after stopping cannabis?

Some effects recede after stopping, according to Sucht Schweiz (the Swiss addiction agency) and drugcom, while for others questions remain open. Memory and concentration largely recover for many people once use ends. For the brain of young people and for the airways, questions remain open. For psychoses a clear principle applies: lasting changes belong in medical hands.

What recovers: memory and concentration

For some heavy long-term users, memory and concentration are impaired. According to Sucht Schweiz, these impairments largely disappear once use is stopped. A study with 88 young adults also found improved memory as early as the week after the last use. According to drugcom, it remains unclear how lasting this change is.

Drugcom also describes that brain performance suffers with increasing duration and intensity of use, and improves rapidly after stopping. Whether small impairments remain has not yet been clearly established scientifically. Anyone who is worried discusses their own course with a doctor.

What remains open: the young brain

According to drugcom, brain changes have been described in people who began using cannabis before the age of 18. Whether cause and effect can be reliably separated has not yet been fully clarified. Likewise, it has not been conclusively clarified whether the brain of young people recovers after abstinence.

This is a reason to act early with young people. The background is explained in the article on the brain in development.

The airways

Cannabis smoke can damage the cilia in the airways. Whether and how far damaged cilia recover afterwards is clarified by a medical examination. Anyone who notices persistent cough, phlegm or breathlessness after stopping should have this checked. The airways are an area where you should not wait for an improvement without looking into it.

Psychological effects and craving

According to Sucht Schweiz, psychological dependence shows mainly in a strong craving to use cannabis. Such a craving can also play a role when stopping. Withdrawal symptoms such as sleep problems or strange dreams are part of this process and vary considerably from person to person.

Anyone who notices that craving shapes their daily life has nothing to be ashamed of. The craving is a signal that should be taken seriously and discussed with a specialist. The article on psychological dependence fits with this.

Psychoses: when medical help is needed

According to the BIÖG, people who use cannabis develop psychosis more often than people who do not. The link is statistically demonstrated. Anyone who notices lasting changes in perception, thinking or feeling after stopping should not wait. A medical examination is then the right step, even if use ended some time ago.

The article on warning signs of psychosis explains which signs may point to a psychosis. Anyone who wants to know more about possible risk factors will find an overview in the article on risk factors.

Why the course matters

How well someone recovers after stopping depends on several factors. Cannabispraevention.de describes that age at the start and frequency of use influence how harmful cannabis is. For psychoses, according to cannabispraevention.de, an inborn predisposition also plays a role. A blanket promise of how quickly everything becomes good again would therefore be unreliable.

The first weeks

According to drugcom, withdrawal symptoms usually begin 24 to 48 hours after the last use. The drugcom FAQ gives a duration of usually no more than a week, and at most 14 days. Another drugcom article gives roughly three to four weeks until withdrawal is largely over. Anyone with symptoms should observe them and discuss them with a specialist.

Mental effects and the social environment

Drugcom names sleep problems and strange dreams as possible withdrawal symptoms. If such changes weigh heavily on everyday life, it makes sense to discuss them with a doctor.

Myths about stopping

One myth holds that everything is over after a fixed date. The information from specialist agencies on duration differs, and complaints vary from person to person. A fixed date therefore cannot be relied on as a promise. Another myth holds that anyone who stops automatically loses their motivation. This too is too sweeping. Sucht Schweiz describes that motivation can be inhibited during intoxication, and a lasting amotivation syndrome is considered not confirmed.

Relapses as part of the way

A relapse does not mean that everything was in vain. It shows which situations are particularly difficult. Anyone who reviews this can prepare the next attempt better.

Support during stopping

Support from a counselling service or from a doctor can help recovery in everyday life. It helps to classify symptoms, set realistic goals and manage relapses without panic. Ask specifically about such offers, and the support becomes concrete.

Dealing with your own setbacks

Your own expectations also matter. Anyone who judges themselves too harshly after a setback often loses the motivation to continue. A friendly, factual review usually helps more than self-reproach.

What you can do now

• Note which changes you notice after stopping and when they occur.
• If craving, reduced concentration or sleep problems persist, speak to a doctor.
• If changes in perception or thinking occur, seek medical help promptly.
• Use a counselling service if the craving does not let go: find addiction counselling near you.

For a confidential conversation, you can reach the Sucht & Drogen Hotline on 01806 313031. More on prevention and youth protection is available under Prevention and youth protection. Counselling does not replace medical treatment.