Key takeaways
- THC overstimulates the amygdala, the brain region that regulates fear responses, which may explain why some people feel anxious or suspicious of others after using cannabis products with high THC content.
- Several factors influence whether you’ll experience paranoia from cannabis, including the amount of THC you consume and the part of the brain it affects the most.
- You can reduce your risk of cannabis-related paranoia by using smaller amounts, choosing products with higher CBD-to-THC ratios, and seeking professional support if you already experience anxiety or paranoid thoughts in daily life.
People commonly associate cannabis with relaxation, but it’s also known for causing feelings of paranoia or anxiety in some people.
Paranoia describes an irrational suspicion of other people. You might believe people are watching you, following you, or trying to rob or harm you in some way.
Read on to learn more about why paranoia may occur when using cannabis, as well as how to manage it.
Experts believe that the endocannabinoid system (ECS) may play a part in cannabis-related paranoia.
When you use cannabis, certain compounds in it, including THC, the psychoactive compound in cannabis, bind to endocannabinoid receptors in various parts of your brain,
The amygdala helps regulate your response to fear and related emotions, like anxiety, stress, and paranoia. When you use cannabis that’s rich in THC, your brain suddenly receives more cannabinoids than usual.
This excess of cannabinoids may overstimulate the amygdala, making you feel fear and anxiety.
This could also explain why products rich in cannabidiol (CBD), a cannabinoid that doesn’t directly bind to endocannabinoid receptors, don’t seem to cause paranoia.
Not everyone experiences paranoia after using cannabis. Plus, most people who do experience it don’t notice it every single time they use cannabis.
So, what makes someone more likely to experience it? There’s no single answer, but there are a few major factors to consider.
Part of the brain
According to an
Study authors suggest this has to do with the large number of reward-producing opioid receptors in the front of the brain.
If the back portion of your brain has more THC sensitivity than the anterior, however, you could experience an adverse reaction, which often includes paranoia and anxiety.
THC content
Using cannabis with higher THC content may also contribute to paranoia and other negative symptoms.
A 2017 study looking at 42 healthy adults found evidence to suggest that consuming 7.5 milligrams (mg) of THC reduced negative feelings associated with a stressful task.
A higher dose of 12.5 mg, on the other hand, had the opposite effect and increased those same negative feelings.
While other factors like tolerance, genetics, and brain chemistry can come into play here, you’re generally more likely to experience paranoia or anxiety when you consume a lot of cannabis at once or use high-THC strains.
If you’re experiencing cannabis-related paranoia, there are a few things you can try for relief.
Relax
Do things that relax you, like coloring, putting on restful music, or taking a warm bath.
Some people report that yoga and deep breathing exercises can also help.
Create a relaxing environment
If your environment makes you feel anxious or stressed, that won’t help your paranoia much.
If possible, try to go somewhere you feel more relaxed, like your bedroom or a quiet space outdoors.
If you’re at someone else’s house or unable to easily change your surroundings, try:
- switching on chill or soothing music
- wrapping up in a blanket
- cuddling or stroking a pet
- calling a friend you trust
Take a sniff of pepper
Cannabinoids and terpenoids, such as the terpenes in pepper, share some chemical similarities, which may be one reason why they seem to
If you have fresh peppercorns, grind them up and take a deep breath. Just don’t get too close — stinging eyes and sneezing might distract you from paranoia temporarily, but not in a fun way.
While more research is necessary to determine the benefits of pepper on managing paranoia after using cannabis, you may wish to give it a try the next time you experience paranoia.
Make lemonade
Got a lemon? Limonene, another terpene, may also help with the effects of too much THC.
Squeeze and zest a lemon or two into a glass of water and sip the drink.
As with pepper, more research is necessary to determine the benefits of lemon on managing paranoia in the moment. You may wish to try consuming lemon, though it should not be a replacement for medical care.
There are several things you can do to reduce your chance of having another bout of cannabis-related paranoia.
Try using less cannabis at a time
Decreasing the amount of cannabis you consume at a time may lower your chances of experiencing paranoia again.
Start with less than you’d typically use in one sitting, and give it at least 30 minutes to an hour to kick in.
Look for cannabis with a higher CBD content
Unlike THC, CBD doesn’t produce any psychoactive effects. Plus, research suggests that CBD-rich cannabis may have antipsychotic effects. Paranoia is considered a psychotic symptom.
Products with higher ratios of CBD to THC are becoming increasingly common. You can find edibles and tinctures that contain anywhere from a 1:1 to a 25:1 ratio of CBD to THC.
Some people also report that strains with a pine, citrus, or peppery scent can help boost relaxing effects and make paranoia less likely, but this isn’t backed by any scientific evidence.
Get professional support for anxiety and paranoid thoughts
Some research suggests people with an existing sensitivity to paranoia and anxious thoughts may have a higher chance of experiencing both when using cannabis. This means that, if you already experience paranoia or anxiety, using cannabis may worsen your symptoms.
Paranoia can overwhelm you to the point where it becomes difficult to interact with others. You might avoid talking to friends, going to work, or even leaving your house. A therapist can help you explore these feelings and other potential contributing factors.
Since paranoia can happen as a symptom of serious mental health conditions like schizophrenia, anything beyond a few passing, mild paranoid thoughts may be worth bringing up with a healthcare professional.
A therapist can offer more support by helping you identify contributing factors and teaching methods to help you manage anxiety symptoms in the moment.
Medical perspective“You’re not alone. Many people experience paranoia or anxiety with cannabis, and it’s something healthcare professionals are trained to handle without any judgement.
“Reaching out to a mental health professional can help you understand what’s happening and find ways to manage these symptoms safely.
“Support is confidential, compassionate, and focused on helping you feel better.”
Quotes represent the opinions of our medical experts. All content is strictly informational and should not be considered medical advice.
If you recently stopped using cannabis, you may still experience some feelings of paranoia, anxiety, and other mood symptoms.
This isn’t uncommon, especially if you:
- used a lot of cannabis before you stopped
- experienced paranoia while using cannabis
For most people, withdrawal symptoms seem to improve within about 4 weeks.
Again, other factors can also play a role in paranoia, so it’s important to talk with a healthcare professional if your paranoid thoughts:
- become severe
- don’t go away within a few weeks
- affect day-to-day function or quality of life
- lead to violent or aggressive thoughts, such as wanting to hurt yourself or someone else
Paranoia may occur with cannabis use as THC can overstimulate the amygdala. The amount of THC you consume may impact the likelihood of experiencing paranoia.
If paranoia occurs, try to keep calm and remember it will likely disappear once your cannabis high starts to wear off.
If you notice particularly intense thoughts, or paranoia that persists even when you stop using cannabis, talk with a healthcare professional as soon as possible.
Crystal Raypole has previously worked as a writer and editor for GoodTherapy. Her fields of interest include Asian languages and literature, Japanese translation, cooking, natural sciences, sex positivity, and mental health. In particular, she’s committed to helping decrease stigma around mental health issues.