An ironic development emerging alongside the “Make America Healthy Again” movement is the portrayal of . Across social media, podcasts, wellness communities and , prominent wellness personalities and other influencers are whose potential benefits have been overshadowed by its .
As a result, nicotine is being repositioned from an addictive substance linked to tobacco use to a natural product that can be used for everything from . This trend includes use of nicotine alone in noncombustible products such as , or in combination with caffeine and , which are substances marketed to enhance cognition.
As a who studies nicotine addiction and the health consequences of tobacco and nicotine products, I am concerned about claims that nicotine can enhance wellness, productivity and cognitive performance.
Distinguishing between nicotine and tobacco
Some of these claims stem from the observation that nicotine is a naturally occurring plant compound found primarily in tobacco and in nightshade vegetables such as tomatoes, potatoes and eggplant . Proponents of nicotine use also draw on studies suggesting that nicotine can .
However, extending these findings to broad claims about productivity, brain health, longevity or wellness goes well beyond what has been shown in human studies.
Nicotine is the in the form of cigarettes, vapes and most other forms of commercial tobacco.
The greatest health risks arise when tobacco is burned, which , including carcinogens, carbon monoxide and fine particulate matter. Repeated exposure to these , , and .
While many smoking-related diseases result from exposure to combustion products, nicotine itself has . Nicotine – the body’s “fight or flight” response – which increases heart rate and blood pressure and . Repeated stimulation of this system can place additional strain on the heart.
Nicotine exposure is of particular concern during critical phases of development. Prenatal exposure to nicotine has been associated with . involved in attention, learning and reward, increasing vulnerability to addiction.
Nicotine changes the brain
Nicotine also through activation of brain reward pathways.
is a key neurotransmitter – a chemical messenger in the brain – involved in attention, learning, memory and information processing. Nicotine acts on many of the same that normally respond to acetylcholine, temporarily increasing alertness, attention and arousal. Activation of these receptors also influences the release of other neurotransmitters, , which plays an important role in reward and reinforcement.
However, nicotine does not reproduce normal acetylcholine signaling. Unlike acetylcholine, the effects of nicotine last much longer and alters activity throughout the brain. With repeated exposure, the brain adapts to nicotine’s presence. Receptors become less responsive, and the brain compensates by , contributing to dependence.
Focus and productivity
A common claim within wellness communities is that nicotine serves as a cognitive enhancer that improves focus and productivity.
Some studies indicate that attention, vigilance, reaction time and some aspects of working memory, but . Research suggests that nicotine may benefit people with mild cognitive impairment, but it does not appear to enhance cognition in healthy individuals and may even in higher-performing people.
In addition, many of these studies include regular nicotine users who are dependent on nicotine. When they stop using nicotine, regular users commonly experience difficulty concentrating, irritability, anxiety, restlessness and impaired attention. , making it difficult to determine whether observed improvements reflect true cognitive enhancement or simply reversal of withdrawal symptoms.
In other words, nicotine may provide short-term improvements in attention and alertness in select users, but there is little evidence that it meaningfully enhances academic achievement, intelligence, creativity, executive functioning or workplace productivity.
Stress and mood
Wellness influencers also promote nicotine as a tool for managing stress and improving mood.
Nicotine activates reward pathways in the brain, which can create a temporary sense of pleasure and well-being. However, long-term nicotine use can , which may make stress and anxiety harder to manage.
Research consistently shows that people who in anxiety, depression and stress, along with improvements in mood and overall quality of life over time. In fact, long-term discontinuation of nicotine use is .
So while nicotine may create a temporary subjective sense of stress relief, current evidence does not support its use to reduce stress, improve mood or treat anxiety or depression.
Healthy aging and longevity
Some of the most ambitious claims emerging from the pro-nicotine wellness movement suggest that nicotine protects against dementia, Alzheimer’s disease, Parkinson’s disease and age-related cognitive decline.
These claims are based on findings suggesting that nicotine can as well as examining whether nicotine could modify disease processes associated with cognitive decline.
However, human studies have not demonstrated that nicotine can prevent dementia, slow progression, preserve long-term cognitive function or improve .
Some wellness and longevity advocates claim that nicotine preserves cognitive function, slows biological aging or promotes longevity.
These claims are largely based on laboratory studies showing that and animal studies suggesting linked to aging and disease. However, findings from laboratory and animal studies have not translated into evidence that nicotine promotes healthy aging, extends lifespan or prevents age-related disease in humans.
Treating nicotine dependence
including patches, gum and lozenges, have been shown to help people with nicotine dependence reduce withdrawal symptoms and cravings, making it easier for people to stop smoking. Used as directed, these medications can reduce the symptoms of nicotine withdrawal that often make it difficult for people to quit.
But this approved form of treating addiction should not be confused with claims that nicotine enhances cognition, promotes wellness or supports healthy aging. In fact, using nicotine products outside of evidence-based treatment for stopping or reducing tobacco use carries the risk of developing nicotine dependence.
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