Weed, Dopamine and Divergent Thinking: How Cannabis Affects Creativity

Cannabis can affect creativity because THC nudges dopamine and changes how loosely your brain links ideas, which some people experience as a creative spark. The catch is dose: research suggests small amounts may leave divergent thinking intact or help some users, while big doses tend to shut it down. But first, what is creativity? It's the human capacity to invent or make things, whether physical objects, ideas, representations or pure fantasy. It goes by other names too: "original thinking," "constructive imagination," "divergent thinking" or "creative thinking."

You can see it in the lives and work of countless artists, painters and poets with huge imaginations. So how do they get the creative juices flowing? Some draw on personal experiences and all kinds of tools. Plenty of them find a refuge in the cannabis plant.

As a psychoactive plant, cannabis has long been used for both recreational and medicinal purposes. Many long-time smokers say they use weed to boost creativity, and they list a better creative flow among their favorite things about the herb.

How does weed spark creativity? Cannabis and dopamine

Weed may boost creativity by literally changing how you think. Specifically, THC chemically alters our thought processes by shifting dopamine levels.

What is dopamine? You've almost certainly heard the word. Often called the "feel-good chemical," this neurotransmitter helps regulate mental and emotional responses as well as motor reactions. When dopamine drops, mood and creativity take a hit.

Understanding how dopamine gets boosted matters because the dopamine system plays a big role in creativity. Cannabis has a range of effects, and in this case, taking in THC triggers a rise in dopamine in the brain. That neurochemical shift lifts your mood, which goes a long way toward explaining why people love the high so much.

How THC works in your body

THC, once it reaches the bloodstream through the lungs or the digestive tract, crosses the blood-brain barrier. Once inside, it binds to CB1 receptors in the brain, which leads to more dopamine, heightened neural activity and a sense of euphoria.

THC in particular stimulates dopamine release, which in turn brings a better mood, a relaxed mindset and an overall sense of well-being.

So if you're wondering how to foster creativity, the idea is that more dopamine released in the brain is linked to more creativity, a better mood and a lower stress response. Some users also report that THC sharpens their focus, mental clarity and sensory perception, though that varies a lot from person to person.

Creativity and divergent thinking

Research links creativity to the brain's frontal lobe. When you use cannabis, this area becomes more active, partly because cannabis can increase cerebral blood flow. That extra brain activity is thought to fuel creative output.

The frontal lobe is also home to what's called "divergent creative thinking." It's one of the metrics used to measure creativity, and it helps you juggle abstract ideas to solve problems creatively. Divergent thinking is essential to creativity: it's the ability to come up with many possible solutions to an open-ended problem.

Divergent thinking is what makes creative thinkers creative. Examples of divergent thinking: brainstorming, freewriting and hunting for innovative solutions.

Cannabis helps connect abstract ideas

A 2015 study from University College London suggests that weed's psychoactive properties may enhance divergent thinking. Cannabis seems to boost the ability to make abstract connections that lead to flashes of inspiration and new ideas.

Keep in mind, though, that this only works when you use the right amount of cannabis. A lot of this psychoactive plant can do the exact opposite.

How to use cannabis to boost creativity

Weed can be a great ally when you're trying to get more creative, but it can also backfire. The wrong strain, overdoing it, or smoking with the wrong people or in the wrong setting can all choke your creative output.

Everyone has their own tolerance and preferences. Cannabis affects the brain differently from one person to the next.

Use cannabis with both THC and CBD

Picking the right strain for you matters. A good place to start is strains with a mix of THC and CBD, because CBD can keep THC from becoming overwhelming. That makes it easier to stay focused and productive.

Pick the right strain

Different strains produce different effects. Users tend to describe sativa and sativa-dominant strains as giving a heady, cerebral buzz that gets the ideas going. Indica and indica-dominant strains, on the other hand, usually bring a more relaxing, sedating effect. If you're doing creative work, skip the heavy couch-lock strains and go for ones that leave you more alert, energized and clear-headed.

Start low

When it comes to creativity and weed, dosing is everything. If your goal is to use cannabis to boost your creativity, always start with a lower dose.

High-THC strains in big doses will most likely make you less creative. That's because a lot of THC may loosen up divergent thinking but weaken convergent thinking (narrowing ideas down to the best answer), which is just as essential to creativity.

On top of that, a 2015 study found a higher dose of THC (22 mg) had a strong negative effect on divergent thinking, while a lower dose (5.5 mg of THC, from 19% THC cannabis) didn't hurt fluency, flexibility or originality, though it didn't measurably boost them compared with a placebo either. In other words, research shows high doses can actually impair divergent thinking. Another reason not to overdo it: too much weed can bring on anxiety and restlessness.