While a back-and-forth take on nicotine, some may state that nicotine sharpens focus or clears the mind. On the other hand, some may disagree. But the connection between nicotine and memory/attention is, like all things nicotine, a field that’s been studied for decades. While some research shows short bursts of alertness, the longer picture of nicotine dependence may prove a different idea.

Vaping culture, in general, may promote the usage of nicotine as it may be linked to show short bursts of alertness. However, the reality is that the relationship between nicotine and attention may be a layered concept. With longer-term health issues that may arise, there is an evident link between nicotine and memory/attention, whether it be good or bad.  

How Nicotine Affects Attention in the Short Term

Nicotine interacts with receptors in the brain that release neurotransmitters like dopamine and acetylcholine, which are shown to be tied to alertness, learning, and focus. Research shows that nicotine can briefly speed up reaction times and improve performance on tasks that demand sustained attention. For some, this explains why vaping before studying or driving feels like it “turns the lights on” upstairs.

But the catch is that this boost doesn’t last. Once nicotine levels drop, attention tends to fade and may leave people feeling mentally scattered. Over time, this cycle can create dependence, as the brain learns to expect nicotine to maintain focus. We explore this idea further on how nicotine affects dopamine.  

Nicotine and Memory: Gains and Tradeoffs

On the other hand, some experiments suggest nicotine might improve working memory in controlled settings, with working memory being the ability to hold information temporarily. However, long-term usage shows a different side, as chronic nicotine exposure can actually reduce overall memory performance.

Studies show that heavy ingestion of nicotine poses a greater risk of memory lapses and/or cognitive decline later in life, meaning that some may feel sharper in the moment but may see memory decrease in the longer term.

We’ve written about the effects of nicotine on the brain, where similar themes emerge: what feels like relief in the short run may feed into the very struggles, like stress or forgetfulness, that users want to escape.

Short-Term vs. Long-Term Cognitive Effects

Looking at nicotine and memory/attention means understanding two very different timelines. In the short term, studies show nicotine can help with repetitive tasks, sharpen reaction speed, and make it easier to stay engaged on boring assignments. That’s why many people say they feel more productive with a vape in hand. But over the long term, studies link chronic nicotine exposure with impaired memory performance.

Studies show that it’s a double-edged sword, as the usage of nicotine may make you sharp immediately, but it may show long-term decline in the future. The contrast highlights how the vaping culture is correct- with immediate effects, but may run into cognitive decline in the future, if not already showing signs of it.

Habits, Cues, and the Attention Loop

Nicotine goes beyond the chemistry behind it all and exhibits signs in the behavior. Many vapers- and people in general- build their rituals around focusing: ingesting nicotine before studying, on their work breaks, or during gaming time. Over time, these moments become cues, where the brain starts to expect nicotine anytime attention drifts.

This is what behavioral scientists call conditioning, and it’s a big reason why nicotine feels tied to concentration. The habit becomes as powerful as the substance. As explained in our article on nicotine dependence, the loop reinforces itself: distraction triggers a craving, the vape delivers a reset, and soon the cycle feels impossible to break.

Withdrawal and Cognitive Fog

One of the most evident signs of dependence is what happens when nicotine is removed. Many people experience brain fog, slower recall, and difficulty concentrating during withdrawal. Studies confirm that nicotine withdrawal is tied to deficits in sustained attention, working memory, and response inhibition.

These deficits aren’t just anecdotal, as in deprived smokers, nicotine replacement improves task performance related to attention and working memory. The fog is temporary, yet it convinces many that they need nicotine to function. According to many, the first days bring headaches, irritability, and poor focus, but weeks later, cognitive clarity often improves.

Other Paths to Better Focus and Memory

In the short term, nicotine can bring a sense of relief, as the brain has been conditioned to depend on it routinely. However, other factors have been shown to have a considerable influence on brain performance. Sleep is one of the strongest predictors of attention and memory. Missing even a few hours can impair focus more than nicotine ever restores. Exercise is another powerful tool, as studies show that physical activity increases blood flow to the brain and strengthens memory networks. Diet also matters, as foods rich in omega-3 fatty acids and antioxidants support long-term brain health.

For many, vaping fills the role of a quick mental boost, but the tradeoff is that it keeps attention dependent on a cycle of peaks and valleys. Choosing routines that naturally improve focus builds steadier performance without the crash. Readers who want to see how lifestyle plays into nicotine recovery can revisit our effects of vaping guide, where sleep, diet, and stress management all connect to healthier brain function.

Why Vapers Keep Linking Nicotine and Concentration

Cultural habits reinforce the idea that nicotine equals focus. Coffee breaks with cigarettes, study sessions with a vape pen, or late-night work paired with a hit; these nicotine habits are all built into routines. These habits make it easy to assume nicotine, which directly fuels concentration, even when science shows the effect is temporary.

The reality is that many of these rituals revolve around the moment of pause itself. There are other options to consider if you’re trying to cut back on nicotine: taking a step away from work and breathing deeply during an inhale may give the brain the reset it needs. While being a simple alternative, it really depends on the user and exploring different options for a brain reset- that don’t involve nicotine. The environment plays a significant role in changing how habits are formed, which, in terms, can break the cycle of dependence.

Tying Back to the Bigger Picture

Our broader exploration of the effects of vaping brings all these threads together. Memory, attention, stress relief, and dependence are all connected by how nicotine interacts with the brain. Understanding this bigger picture helps explain why vapers experience both benefits and setbacks.

The goal isn’t just to focus on what happens in the next five minutes of concentration, but to consider what years of nicotine exposure could mean for memory health. By grounding decisions in research and personal experience, readers can weigh the real tradeoffs behind the daily hit.

Final Thoughts

Studies show that there is a relationship between nicotine and memory/attention. While the short-term effects can make focus feel sharper, the long-term impact often works against memory health and concentration. Much of the “boost” comes from relieving withdrawal, creating a cycle that vapers know well: sharpness followed by cravings, clarity followed by fog. Pitted in everyday habits, the environment of individuals plays a significant role in nicotine dependence. Studies show that, while more complicated than it may seem, other alternatives to nicotine can help users quit, where it’s essential to recognize the habits that have been built into the nicotine dependence itself. Some healthier routines, like sleep, exercise, and balanced nutrition, can help users if they aim to wean off nicotine.

At Ruthless Vapor, we explore these connections to help our community make educated decisions on what they ingest every day. Understanding how nicotine interacts with the brain gives every reader the chance to see the whole picture and make informed choices on a healthier lifestyle.

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A first-of-its-kind study, published in the journal BMC Medicine, has found that long-distance running can lead to an increase in the amount of THC-like molecules in the body.

Researchers at the University of Duisburg-Essen found that levels of anandamide – an endocannabinoid sometimes called the “bliss molecule” – increased throughout a marathon and were still raised 45 minutes after runners had finished. The rise was much smaller when the same people walked the same route for the same amount of time.

Runner’s high is a feeling described as one of euphoria and calmness mixed with reductions in anxiety and pain, and is experienced by people who enjoy endurance sports. Until recently, it was believed endorphins caused the phenomenon, but it is now widely believed that endorphins cannot cross the blood-brain barrier.

Endocannabinoids are molecules the body makes naturally. They act on the same signalling system as cannabis compounds, but are not derived from cannabis, nor is there evidence that runners are somehow producing THC.

Anandamide (AEA) has a similar composition and produces the same calming and euphoric effects as the high associated with the THC produced from consuming cannabis.

Other endocannabinoids released during endurance sports include 2-arachidonoylglycerol (2-AG) and 1-arachidonoylglycerol (1-AG).

To understand the link between running and endocannabinoids, researchers conducted two studies. The first involved 19 experienced runners completing a marathon around Lake Baldeney in Essen, Germany. Researchers took blood samples before the start, after 14km and 28km, at the finish and again after 45 minutes of recovery. Runners were asked to abstain from eating or drinking anything containing caffeine, to avoid nicotine products for the whole day prior, and were instructed not to run during the previous 24 hours. Runs were scheduled at the weekend to coincide with lower levels of cortisol.

One or two months later, the same participants returned to walk the same course. Their walks were matched to the time each had taken to finish their marathon, allowing the team to compare running with a lower-intensity activity over the same duration.

AEA rose progressively over the marathon and remained elevated during recovery. A second endocannabinoid, 2-AG, rose later in the marathon. Both changes were more marked during running than walking.

The second part of the research followed 36 competitors in the 2024 TorTour de Ruhr, who raced 100km, 160km or 230km. Runners in this cohort were also instructed to abstain from caffeine and nicotine and screened, but less vigorously, as their study was set within a competitive environment. Blood tests taken before and after the races again showed higher AEA levels after the runners had finished. Levels of 2-AG also rose after the ultramarathons.

“Our findings show robust and time-dependent changes in circulating [endocannabinoid] levels during prolonged endurance exercise,” the researchers wrote.

During the marathon, participants reported more euphoria and lower anxiety than during the walking session, particularly towards the end of the route. Among ultramarathon runners, anxiety fell after the race, while euphoria did not change significantly. Pain, meanwhile, increased substantially during the longer races.

However, when asked, only three of the 19 marathon runners said they experienced a runner’s high during their race. Twelve of the 36 ultramarathon runners reported one, while 19 said they did not. “No formal definition of the runner’s high was provided, and responses were therefore based on participants’ individual understanding of the concept,” the study said, making that result difficult to interpret.

The researchers say that while the findings show an association between prolonged running, higher levels of endocannabinoids and some changes in mood, they do not demonstrate that AEA or 2-AG directly cause the runner’s high. They added that future research will need to explore how these molecules interact with brain signalling and other chemicals involved in exercise.

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Full-spectrum cannabis oil is associated with “favorable perceived quality of life and sleep satisfaction,” according to a new study of medical marijuana patients. Higher concentrations and longer treatments also seemed to produce “higher odds of better outcomes.”

Researchers at State University of Montes Claros conducted a cross-sectional observational survey involving 71 medical patients enrolled in Brazil’s medical marijuana program. Respondents included people who use marijuana for psychological conditions (37 percent), neurological disorders (21 percent) and chronic musculoskeletal pain (11 percent) that can contribute to sleep issues.

The study, published in the journal Frontiers in Pharmacology, found that the use of cannabis oil with a 3:1 THC-to-CBD ratio was linked to “positive correlations” between the “psychological domains of quality of life and sleep satisfaction.”

About half of patients reported using marijuana-derived preparations with concentrations of 6 percent, followed by 9 percent (20 percent of patients) and 3 percent (14 percent of patients). The participants were monitored by medical professionals throughout the treatment, with laboratory reviews and assessments of “medication concentration adequacy,” for example.

Notably, the researchers determined that higher cannabis oil concentrations and longer treatment durations were associated with “higher odds of better outcomes.”

“In a real-world clinical context, supervised use of full-spectrum medical Cannabis oil was associated with favorable patient-reported perceptions of quality of life and sleep, consistent with perceived effectiveness,” the study said. “These findings highlight the need for longitudinal studies with pre-treatment baseline assessment.”

To analyze the impact of medical marijuana, patients completed a version of the World Health Organization Quality of Life questionnaire that asked about “physical, psychological, social relations and environment domains,” as well as an equivalent to the Pittsburgh Sleep Quality Index to determine “subjective and objective sleep components” over four weeks before the test was administered.

“A key finding was the relationship between sleep and wellbeing as an integrating axis, evidenced by the positive correlation between psychological domains [of the life quality survey] and sleep satisfaction,” the study authors said. “Consistent with prior evidence, systematic reviews and scoping reviews on cannabinoids and sleep indicate that subjective improvements are frequent but inconsistent, varying substantially according to population, metabolite, dose, ratio of cannabinoids, and route of administration.”

The study findings are “consistent with the hypothesis that cannabinoid interventions may influence wellbeing through direct and indirect pathways (sleep, relaxation, anxiety reduction, and symptom modulation), beyond the primary control of a target symptom,” they wrote.

“In summary, the results suggest that, in supervised clinical practice, patients using full-spectrum THC and CBD rich oil reported favorable perceived quality of life and sleep satisfaction. However, given the cross-sectional design and the absence of pre-treatment assessment, these findings reflect self-reported perceptions rather than evidence of treatment efficacy, and causal interpretation is not warranted. Future longitudinal studies, with pre-treatment assessment, systematic follow-up, and more detailed product characterization, are needed to clarify mechanisms, responding subgroups, and the risk-benefit balance of prolonged use, especially in products with higher THC content.”

The study reaffirms some of the best-studied health impacts of cannabis. That is, it has been shown to hels people sleep and feel physical and psychological symptom relief.

For example, research published earlier this summer found that a cup of tea infused with marijuana before going to bed can lead to a better night’s sleep and an overall improved sense of happiness in life.

“The results demonstrated a statistically significant increase in happiness levels between pre-experimental and post-experimental groups, indicating that cannabis-infused tea had a positive effect on participants’ well-being,” the study, published in the Journal of Health Science and Medical Research, found.

A study of adults who drink cannabis-infused beverages that was published earlier this year, for example, found evidence of a “substitution effect,” with a significant majority of participants reporting reduced alcohol use after incorporating cannabinoid drinks into their routines. It also identified improvements in overall wellbeing and sleep, as well as reductions in pain, stress, depression and anxiety.

A survey from the American Academy of Sleep Medicine found that about 2 in 3 Americans who use marijuana say it improves their sleep.

Separate research involving more than 3,500 patients showed that using medical marijuana appears to help people reduce the use of medications, including sleeping aids. They also experience far fewer negative side effects after switching to cannabis from prescription drugs.

A 2025 study on the use of medical marijuana by older patients—age 50 and above—concluded that “cannabis seemed to be a safe and effective treatment” for sleep disorders, pain and other conditions.

About 16 percent of Americans aged 21 and older say they use cannabis as a sleep aid, according to a separate industry-backed survey from last year. That makes marijuana more popular for sleep than prescription sleep aids (12 percent) or alcohol (11 percent), but still not quite as common as using supplements (26 percent) or over-the-counter sleep aids (19 percent).

A pair of 2024 studies found that both older medical marijuana patients as well as people with fibromyalgia reported that cannabis improved their sleep.

A different study that year from the retirement group AARP found that marijuana use by older people in the U.S. has nearly doubled, with better sleep as among the most frequently cited reasons.

Another industry-backed survey last year found that an oral CBD solution effectively treated mild to moderate anxiety, as well as associated depression and poor sleep quality, with no serious adverse events observed.

A study published in 2024, meanwhile, found that using marijuana before sleep has minimal if any effect on a range of performance measures the next day, including simulated driving, cognitive and psychomotor function tasks, subjective effects and mood.

In 2023, a federally funded study found that people with anxiety experienced better quality sleep on days when they used marijuana compared to days when they used alcohol or nothing at all.

Separate studies in 2019, meanwhile, found that fewer people purchased over-the-counter (OTC) sleep medications when they had legal access to cannabis and that many adult-use consumers at the time said they used marijuana for the same reasons medical cannabis patients did: to help with pain and sleep.

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Drinking cannabis infused tea before bed can significantly boost happiness levels, according to new research.

The quasi-experimental study, conducted by Rajamangala University of Technology Isan in Sakon Nakhon, tested three different formulations of cannabis drip tea on 30 volunteers over a seven-day period. Participants were divided into three groups, each receiving tea infused with 3%, 5% or 7% weight/weight cannabis.

The results, published in the Journal of Health Science and Medical Research, demonstrated significant increases in happiness levels across all three concentrations. The 7% formulation produced the highest happiness scores and was identified as the most suitable option for improving well-being.

“The findings from this study support the potential application of cannabis-infused tea in improving happiness levels,” the researchers wrote, noting that the tea was prepared using traditional Thai medicinal approaches.

Researchers evaluated happiness using the Thai Mental Health Index (TMHI), which measures four key areas: mental state, mental capacity, mental quality and supporting factors. Participants who consumed the 7% cannabis tea showed improvements across all four areas, including enhanced life satisfaction, self-esteem, emotional regulation and confidence.

The lower concentrations of 3% and 5% also produced positive effects, particularly in mental state and supporting factors, with participants reporting increased life satisfaction and self-respect.

Notably, none of the 30 participants reported any side effects during the trial period. Volunteers were instructed to prepare the tea at home by steeping one tea bag in 250ml of hot water for 10 minutes and consuming it 30 minutes before bedtime.

The tea formulations also contained peppermint and stevia alongside cannabis leaves, which the researchers noted could have also contributed to the overall effects. They also emphasised that their findings align with traditional Thai medicine practices, which have long used herbal teas for health promotion and treatment. However, they recommended further studies to explore the long-term effects of cannabis-infused tea consumption to determine its efficacy and safety over extended periods.

In May 2026, a cross-clinic study of over 6,000 medical cannabis patients in the UK found that 98% of respondents reported improvements in mental health following treatment with medical cannabis.

According to NHS England, 22.6% of 16 to 64-year-olds had a common mental health condition in 2024 – up from 18.9% in 2014. An estimated 1.7m people were waiting for NHS mental health treatment in England in 2025.

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