The Long and Short-Term Effects of Marijuana on Speech and Social Settings

Cannabis is known for its significant effect on the human brain—which is what makes it so beneficial for helping people with mental health conditions.

However, the portion of the brain responsible for speech can also be affected. After consuming cannabis, some people may experience acute, subtle speech deviations or difficulties, primarily in maintaining the logical flow of their thoughts. 

Researchers have conducted studies over the years to explore how cannabis affects speech—both immediately and in the long term. There are even notable speech differences between biological males and females, specifically in verbal learning and memory, that also happen in the short and long term.

In this article, you’ll gain a better understanding of how cannabis can affect speech, what research says about the effects on speech, how this can affect conversations in social settings, and what this means for cannabis consumers.

Studies of Adults With a History of Recreational Cannabis Use Having Altered Speech Production

Cannabis can have various effects on the body, including changes in speech, according to research.

A study in Drug and Alcohol Dependence explores speech patterns in recreational cannabis users versus non-users. Researchers observed subtle differences in the timing, vocal effort, and speech quality of cannabis consumers. 

The findings suggest that cannabis subtly alters speech by affecting motor functions, which coordinate brain and muscle activity for actions like walking and speaking. However, the data remains inconclusive. 

The study analyzed speech samples from 31 cannabis consumers and 40 non-consumers. Researchers used acoustic analysis to assess speech:

• Timing
• Vocal control
• Quality

 Participants completed various speech tasks, including:

• Delivering a monologue
• Reciting the days of the week
• Reading a phonetically balanced passage, known as “The Godfather Passage”

Researchers observed minimal differences in speech quality and timing in cannabis users. These differences lacked statistical significance, preventing clear conclusions.

When Do Marijuana’s Effects on Speech Occur?

Marijuana affects speech immediately or with a delay, depending on the consumption method. When smoked or vaped, the effects of cannabis, including changes to speech, can be felt within seconds to minutes. When ingested by mouth, the effects typically take 30 minutes to 2 hours to kick in and usually last 1-4 hours.

Short-term cannabis use can cause difficulty with speech production, including struggling with verbal recall, short-term memory, enunciation, and a drawn-out or lazy delivery. 

Interestingly, modern research suggests that being born female appears to be a protective factor in immediate and delayed verbal recall compared to males and even non-consuming females. Recent studies also suggest this effect holds true in the long term, but without a clear reason why.

Cannabis consumption may cause subtle long-term speech changes, but these effects typically reverse after stopping use.

Can Marijuana Cause Long-Term Speech Problems?

Long-term cannabis use can subtly alter speech characteristics.

For example, it’s possible that chronic cannabis use can lead to long-term changes in speech patterns, such as alterations in tone, inflection, and enunciation. Long-term use may also cause cognitive impairments like difficulty with memory, focus, and thought processes. Fortunately, research suggests many of these long-term effects are reversible, often improving after 72 hours of stopping cannabis use.

As noted above, research comparing individuals with a history of recreational cannabis use versus non-users observed these speech alterations. However, the differences in speech were minor and not easily detectable without specialized analysis.

Another older study suggests that long-term marijuana use may impair verbal memory, making it more difficult to recall words by middle age. The study followed men and women for 25 years, starting in their young adulthood. 

The research found that cannabis use affected the brain’s ability to memorize words or language. However, it did not impact cognitive functions like thinking speed, focus, or problem-solving.

Reto Auer, the study’s first author and academic chief resident at the University of Lausanne in Switzerland, explained that the findings revealed a gradual decline in verbal memory with more frequent marijuana use. He clarified, however, that the study shows only an association—not a definitive cause-and-effect relationship.

Smoking marijuana as a consumption method can also harm vocal cords, potentially causing laryngitis, bronchitis, sputum production, wheezing, coughing, scarring, and other voice issues. Research shows that any smoke, whether from tobacco or cannabis, can damage vocal cords. Prolonged smoke exposure, high temperatures from smoking or dabbing, and lung retention of smoke can also lead to throat injuries, increasing the risk of voice issues.

What Are Some of the Social Impacts of Marijuana Consumption?

Marijuana affects social interactions in complex ways, varying by individual, usage patterns, and social context. Researchers have studied its positive and negative impacts, focusing on mood, communication, and behavior.

Decades ago, a 1986 study examined the effects on social conversation after consuming cannabis and found decreases in speech quality and quantity. Researchers also observed increased heart rate and heightened self-reports of feeling “high” and sedated. However, that study was observational and conducted when cannabis research faced more significant restrictions, reducing its reliability.

While speech can potentially be negatively affected, studies still suggest that cannabis may positively enhance social experiences and conversations. For example, a 2021 case study in Cannabis and Cannabinoid Research reports that one patient with treatment-resistant stuttering began taking medical cannabis and had marked improvements in: 

• Speech fluency
• Social anxiety and a better social life
• Mood
• Reduced stress
• Sleep
• Attention
• Concentration
• Self-confidence

A more recent Drug and Alcohol Dependence study found that cannabis boosts positive emotions in social settings over isolated use, revealing users felt fewer negative emotions when consuming cannabis with others. The study’s results suggest that cannabis can enhance mood and encourage social engagement, especially in groups.

The key findings of this study also included:

• A consistently higher positive affect (outward emotional expression) during cannabis use, regardless of social context.
• Less emotional expression (negative affect)  appeared when participants used cannabis alone, but improved in social settings.
• Participants with higher cannabis use disorder (CUD) symptoms reported lower adverse effects during cannabis use.

The results suggest that while cannabis elevates an overall positive effect across social contexts, any impact on adverse effects can vary depending on the individual and if the person is using cannabis alone or with others. The data remained equivocal, meaning the differences were too small to draw solid conclusions.

While researchers have conducted numerous studies on how marijuana affects communication in social settings, their reliability still varies based on methodology.

How Does Weed Affect You Socially? 

A recent study published in Frontiers in Psychology also investigates the impact of cannabis use on social interactions and mood. 

The social context of cannabis use greatly influences its impact, as research shows that consuming cannabis with friends enhances social bonding, while using it alone may trigger negative feelings like paranoia or anxiety, depending on the individual.

Another recent study using ecological momentary assessment (EMA) further shows that cannabis use in social settings reduced negative emotions and boosted positive ones, especially in those with PTSD or generalized anxiety disorder (GAD), while solitary use often heightened negative emotions. Studies like these further emphasize the importance of the social environment when using cannabis to shape its effects on mood and behavior.

But studies simply confirm what many cannabis users already know—that cannabis encourages human connection and fosters a calm, comfortable atmosphere in social settings.

For people who have social anxiety disorder (SAD), a study finds that those with SAD had higher levels of CUD and were more likely to experience social withdrawal and isolation. Social isolation tends to be more common in those who use cannabis as a way to self-medicate and manage negative emotions, however. 

Unfortunately, this can quickly become a negative cycle, leading individuals to rely more on cannabis and withdraw from social connections, potentially causing long-term social issues. 

What Do These Research Findings Mean for Cannabis Consumers?

Overall, the impact of marijuana on speech and cognition can vary from person to person. Factors such as biological sex, age, body weight, metabolism, tolerance, method of consumption, and the strain or potency of the cannabis product all play a role.

While some research suggests that cannabis may negatively affect speech and social interaction, these findings often have limitations. Although researchers have noted subtle speech changes in users, they still have not reached definitive conclusions. Female-at-birth individuals appear to have some protective factors when it comes to verbal learning and memory, even in the long term.

Many studies rely on self-reported data or small sample sizes, which can reduce conclusion reliability. Additionally, cannabis dosages, frequency of use, and individual differences influence outcomes. Therefore, it’s essential to interpret negative study findings cautiously, as they may not be conclusive.

The research findings mentioned are also simply associations, not definitive cause-and-effect conclusions. However, they do highlight the need for cannabis consumer awareness and caution with self-medicating.

Fortunately, emerging evidence points more toward cannabis enhancing social interactions, promoting sociability and relaxation, easing treatment-resistant stuttering, and, less commonly, adverse social effects. Still, additional rigorous studies are needed to better understand the social and communicative impacts of cannabis use.

Key Takeaways

Cannabis can potentially affect speech and social behavior in various ways, with the potential for immediate or long-term impacts. While it can enhance sociability and improve mood, it may also cause subtle speech difficulties, particularly with long-term use. 

As marijuana becomes more widely legalized, researchers will hopefully conduct further necessary studies on its effects, including speech and social impact. This knowledge will likely help cannabis consumers make more informed decisions.

Frequently Asked Questions

Can marijuana cause speech problems?

Yes, cannabis use can lead to subtle speech changes. Users may experience difficulty maintaining a logical flow in conversation or struggle with enunciation, especially during acute use.

Does marijuana affect vocal cords?

Smoking marijuana or tobacco can harm vocal cords, causing laryngitis, scarring, and other voice issues. To protect vocal health, consumers can choose alternative cannabis consumption methods.

What are the acute effects of marijuana intoxication?

Acute cannabis use can result in slowed speech, difficulty remembering words, and altered speech patterns. These effects typically last 1-3 hours, depending on the method of consumption.

How does marijuana affect neural communication?

Marijuana affects neural communication by interacting with cannabinoid receptors in the brain, which influence memory, coordination, and motor skills, potentially impacting speech and cognitive functions.

How does weed affect your behavior?

Weed can alter mood, enhance sociability in group settings, and reduce negative emotions. However, excessive use or using cannabis as a way to manage negative emotions can lead to social withdrawal in some individuals.

Does smoking weed affect my speech?

Yes, smoking cannabis can temporarily slow speech and make it potentially challenging to maintain the flow of conversation, especially immediately after consumption. The effects of long-term subtle speech changes are also potentially linked to cannabis consumption. However, these long-term effects are typically reversible after stopping cannabis use and still require further research.

How does weed affect language?

Cannabis can affect language by impairing verbal memory and attention, making it harder for users to remember words or maintain coherent speech patterns.