Nicotine Addiction Research Articles

Smokeless tobacco use and its associated factors among secondary school students of Rangeli Municipality of Morang district, Nepal.

The tobacco epidemic is one of the biggest public health threats and the world's leading cause of preventable death which is responsible for killing 8 million people every year. Adolescents are the vulnerable age group and are at greater risk of any tobacco use including smokeless tobacco (SLT) and nicotine addiction. Tobacco use at a young age increases the risk of various non-communicable diseases (NCDs) such as respiratory illness, asthma, chronic obstructive respiratory disease (COPD), reduced pulmonary function, and cancers. This study aimed to determine the prevalence of smokeless tobacco and its associated factors among secondary school students of grades 11 and 12 in Rangeli Municipality, Nepal. A cross-sectional study was conducted among 355 students from the selected secondary schools. A self-administered questionnaire was used to collect the data. Data was cleaned and then exported to IBM SPSS Statistics 20 for analysis. Participants' characteristics were described using frequencies, percentages, mean, and standard deviation. Multivariate logistic regression was conducted to determine the association between individual characteristics and prevalence of smokeless tobacco. All the tests were performed at a 95% Confidence Interval (CI) and a p-value less than 0.05. The mean (±SD) age of the participants was 18.0±1.3 years. Most participants were female (61.1%). The majority of the participants were from grade 11 (58.3%), government schools (60%), and nuclear families (64.8%). This study found that 38.4% and 61.6% of the participants were SLT ever users and never users respectively. Among the ever users, 29.5% were current users and most tried (47.7%) at the age of 10-14 years. Most participants revealed that homes and public places were common sites for SLT use. Paan Masala and Gutkha were the most commonly preferrable SLTs. This study found that age (AOR = 1.5, CI: 1.2-2.2), sex (AOR = 2.6, CI:1.6-4.4), and school type (AOR = 1.8, CI:1.1-3.0) were significantly associated with the prevalence of SLT. This study found that the prevalence of current SLT users is higher than the national survey. This study concludes that males, young adolescents, and students from private schools are at greater risk of SLT use and are unaware of the consequences on their health. Concerned stakeholders must expand awareness and promote educational programs on the harmful use of tobacco targeting secondary school students. The government organizations, educational institutions, and private organizations jointly work to strengthen the implementation of tobacco cessation programs and tobacco control strategies.

Methods to quit smoking-a quantitative online survey on facilitators and barriers (RauS-study)

Smoking is still the largest preventable health risk in Germany, which is why ahigher success rate in smoking cessation would benefit both public and individual health. In order to achieve this, abetter understanding of the smoking cessation methods used and the factors that facilitate and prevent smoking cessation is required. The RauS study therefore aimed to investigate which methods have been used in attempts to stop smoking, how successful these methods have been, and which factors have been perceived as helping or hindering smoking cessation. From March to December 2022 aquantitative online survey was conducted among current or former smokers over 14years of age (N = 6192). Of the sample, 93% have tried to quit smoking at least once. In general, for the respondents who did or did not use e‑cigarettes/tobacco heaters, "personal willpower" was the most frequently used and perceived as the most helpful method. Among people who have used e‑cigarettes/tobacco heaters to quit smoking, e‑cigarettes with nicotine were used most frequently and were rated as the most helpful. Potential or concrete health consequences were most likely to be perceived as motivating. Rituals associated with smoking were the main barrier to quit smoking, while withdrawal symptoms played amuch smaller role. Overall, the results show that the focus on "nicotine addiction" in smoking cessation should be reconsidered, and social and ritual dimensions should be addressed more strongly. For at least some of those affected, e‑cigarettes may be ahelpful method of reducing harm and/or quitting smoking.

Glucagon‐like Peptide-1 Agonists and Smoking Cessation: A Brief Review

The glucagon‐like peptide 1 (GLP-1) agonists such as semaglutide (Ozempic®, Wegovy®) and tirzepatide (Mounjaro®) have shown efficacy inducing weight loss in both diabetics and non-diabetics. According to the incentive sensitization theory of addiction, these drugs may prove useful in addictive disorders such as nicotine addiction. Animal data has been suggestive of a potential positive effect but early human studies have been mixed. This manuscript reviews the theory of addiction as well as the few animal and human studies available. Further human studies are needed to show GLP-1 agonist efficacy in smoking cessation.

E-cigarettes and vaping, new spotlight on smoking as an old cardiovascular risk factor?

Smoking is one of the leading causes of chronic non-communicable diseases and asignificant risk factor for cardiovascular and respiratory diseases. While global tobacco consumption has decreased over the past two decades, the use of e‑cigarettes and water pipes (shisha) has surged at an alarming rate, particularly among younger individuals. E‑cigarettes do not offer acompletely risk-free alternative to traditional cigarettes, as the vast array of flavors and ease of use contribute to agrowing number of dependent users. Furthermore, they are not necessarily effective in overcoming nicotine addiction. This contribution provides an overview of the cardiovascular health impacts associated with shisha smoking and e‑cigarette vaping, with aparticular emphasis on the detrimental effects on endothelial function. The harmful biological effects of the toxic substances in these products, especially oxidative stress and inflammatory responses, are also discussed. Finally, the current state of recommendations, legal regulations, and commercial advertising are summarized.

The association between nicotine dependence and sleep quality in patients referred to a smoking cessation outpatient clinic: A cross-sectional study.

Nicotine addiction is one of the most common forms of dependence. It is shown to be associated with many chronic diseases that develop mostly through smoking. The association between sleep quality and smoking or nicotine addiction has not been clarified yet. This study aimed to investigate the association between nicotine addiction and sleep quality. In this cross-sectional study, the Epworth sleepiness scale (ESS), Pittsburgh sleep quality index (PSQI), Fagerström test for nicotine dependence (FTND), and Hospital anxiety-depression scale (HADS) were administered to patients who applied to the smoking cessation outpatient clinic of a reference hospital between April and June 2023. FTND measured nicotine dependence, and its association with sleep quality estimated by PSQI was assessed by binary logistic regression with the potential confounders. In the study group of 280 participants, 67.1% were male, and 57.8% had poor sleep quality. The median (IQR) FNTD score was 7.0 (3.0), and the median global PSQI score was 6.0 (5.0). Poor sleep quality increased by 1.12 times (AOR=1.12; 95% CI: 1.02-1.22, p=0.016) for each unit increase in hospital anxiety score and by 1.22 times (AOR=1.22; 95% CI: 1.05-1.42, p=0.011) for each unit increase in FTND score. Increased nicotine dependence and anxiety are independently associated with poor sleep quality. The findings support smoking cessation efforts. It is recommended to study the effect of combating anxiety and tobacco addiction to improve sleep quality.

Evaluating the effectiveness of recovery-oriented interventions for youth who vape nicotine: a systematic review protocol.

The increase in nicotine vaping among youth has emerged as a critical public health concern. Vaping among youth is linked to adverse health outcomes, including nicotine addiction, cardiovascular and pulmonary diseases and mental health challenges. Recently, there has been a growing demand for research to expand on treatments to enhance the recovery process from vaping nicotine in youth. To this date, no comprehensive review identifies all interventions available for vaping recovery and compares their effectiveness in youth. This proposed systematic review seeks to identify all recovery-oriented interventions for youth aged 10-24 that facilitate vaping recovery and evaluate the measured effectiveness. This review will serve to support healthcare practitioners, nurses and policymakers to further understand recovery interventions and aid in improving vaping recovery among youth. This protocol, registered with PROSPERO, adheres to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis Protocol (PRISMA-P) framework, and the final review will adhere to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines to ensure quality and replicability. The review will comprise studies including youth aged 10-24 engaging in nicotine vaping. A comprehensive search will be conducted across MEDLINE, Embase, PsycINFO, Scopus and CINAHL, with no restrictions on the date range due to the recency of the topic. Two independent reviewers will screen the identified research for eligibility at the title and abstract levels, with any disagreements resolved by a third reviewer. The review will include randomised control trials and quasi-experimental studies. Full-text review and data extraction will be standardised and completed by the primary researcher. Additionally, studies will be assessed for quality and potential biases. Given that this is a review of existing literature, no ethics approval is required. The focus on youth necessitates careful consideration of ethical standards. This review is committed to contributing responsibly to public health knowledge regarding youth vaping recovery. The results from this review will be disseminated through publication in an open-access, peer-reviewed journal and likely through posters and presentations at scientific conferences. CRD42024543994.

Vaping and smoking cue reactivity in young adult non-smoking electronic cigarette users: A functional neuroimaging study.

The rapid growth in the use of electronic cigarettes (e-cigarettes) among non-smoking young adults is concerning, as it raises the potential for chronic vaping and nicotine addiction. A key characteristic of drug addiction is the elevated neural response to conditioned drug-related cues (i.e., cue reactivity). Generalized reactivity to both vaping and smoking cues may signify an increased risk for smoking initiation in non-smoking vapers. In this study, we used functional magnetic resonance imaging (fMRI) to evaluate brain responses to vaping and smoking cues in young adult non-smoking vapers. Sixty-six young adult non-smoking vapers underwent functional MRI while viewing visual cues pertaining to vaping, smoking, and nicotine-unrelated unconditioned reward (i.e., food). A priori region-of-interest analysis combined with exploratory whole-brain analysis was performed to characterize neural reactivity to vaping and smoking cues in comparison to food cues. The medial prefrontal cortex and the posterior cingulate cortex, regions that play a key role in drug cue reactivity, showed significantly increased neural response to vaping cues compared to food cues. The posterior cingulate cortex additionally showed increased neural responses to smoking cues compared to food cues. Despite not currently smoking combustible cigarettes, young adult vapers exhibited heightened neural susceptibility to both vaping and smoking cues within brain systems associated with cue reactivity. The findings shed light on the mechanisms underlying nicotine addiction and smoking initiation risk in this critical population and may contribute to the development of science-based interventions and regulatory measures in the future. The escalating vaping prevalence among US non-smoking young adults is alarming, due to its potential ramifications for nicotine addiction development. Nicotine addiction is characterized by elevated neural response to conditioned nicotine-related cues. Using functional neuroimaging, we showed that young adult non-smoking vapers exhibited heightened neural susceptibility to both vaping and smoking cues within brain systems previously associated with cue reactivity. Such cross-reactivity to both types of nicotine cues may serve as the mechanism underlying nicotine addiction and smoking initiation risk in this population. Our findings may contribute to the development of science-based interventions and regulatory measures addressing the vaping epidemic.

Tobacco Smoking Functional Networks: A Whole-Brain Connectome Analysis in 24,539 Individuals.

Nicotine addiction, a multifaceted neuropsychiatric disorder, profoundly impacts brain functions through interactions with neural pathways. Despite its significance, the impact of tobacco smoking on the whole-brain functional connectome remains largely unexplored. We conducted a whole-brain analysis on 24,539 adults aged 40 and above from the UK Biobank cohort. Subjects were categorized into individuals who use nicotine and who do not use nicotine based on current and chronic tobacco smoking information. Functional connectivity was assessed using resting-state functional magnetic resonance imaging (rfMRI). We employed a network analysis method to assess the systematic effects of tobacco smoking on brain connectome by identifying subnetworks that show nicotine-use-related differences. Our analyses revealed two nicotine-use-related subnetworks with distinct network structure (permutation p-value < 0.001). In the first network, there is a significant decrease in resting-state functional connectivity (rsFC) between the basal ganglia regions (e.g., nucleus accumbens) and 73% of the remaining brain regions, emphasizing the central hub role of basal ganglia in addictive smoking behaviors. Additionally, a data-driven subnetwork mainly involving regions from frontal and occipital lobes, showed reduced rsFC among individuals who use nicotine. The results suggest significant alterations in the communication and coordination among the basal ganglia and the broader network of brain regions. The observed changes in rsFC indicate a widespread disruption in the connectivity patterns associated with nicotine use. This study identifies rsFC subnetworks related to chronic nicotine use through whole-brain connectome analysis. The findings confirm that widespread alterations in rsFC are centered around hub nodes within the basal ganglia, including bilateral nucleus accumbens, putamen, caudate, and globus pallidus. In addition, our analysis found a clique-forming subnetwork vulnerable to tobacco smoking consisting of regions from the visual, dorsal/ventral attention, and frontoparietal networks.

E-Cigarettes in the Young Population

E-cigarettes have gained notable popularity among youth in recent years, posing a serious societal issue that has elicited much concern from public health professionals and legislators. The increase in e-cigarette consumption among adolescents can be ascribed to assertive marketing strategies employed by corporations that focus on appealing to young consumers through flavored offerings and aesthetically pleasing designs. This rise is concerning because of the possible long-term health ramifications linked to vaping, such as nicotine addiction and exposure to hazardous chemicals found in numerous e-cigarette formulations. The normalization of e-cigarette usage in social contexts may result in heightened peer pressure and the endorsement of detrimental conduct. To properly address this issue, government agencies must enforce stronger rules on e-cigarette sales and marketing directed at minors, while schools and community organizations should educate youth about the risks of vaping.

Future of nicotine pouches – users’ perspective

Abstract Background Nicotine pouches (NPs) are gaining popularity. They are a rapidly developing category with little research or regulatory oversight. Studies have shown that the descriptor ‘tobacco-free’ may impact risk perceptions and the appeal of nicotine pouches among young adults and thus shape their position on the market. The aim of the study was to broaden the knowledge on NP users’ perspective about the future of this products. Methods Qualitative approach was utilized. In December 2022 there were seventeen structured In-depth Interviews (IDIs) conducted. The sample included of adults aged 18-22, both male and female. The respondents were asked how they see NPs in the context of aim group and competition with other nicotine products. Results We found that from NPs users’ perspective, these products are aimed at those who want give up smoking, do not want to play with electronic devices (such us e-cigarettes of heated tobacco products) or just seek for discretion (such as office workers who do want to go outside for a smoke or vape). Special aim group are children who want to hide their nicotine product use. Respondents believe that they will not force traditional cigarettes out of the market but will be a popular alternative for young people. Some suggest they need popularization to help exclude products that produce smelly smoke or vape. Conclusions Nicotine pouches as smokeless products will probably fill the market space with product aimed at young people who seek discretion of their nicotine addiction as well as those who do not want to inhale smoke. Key messages • Nicotine pouches users see value of these products. • Nicotine pouches future seems to be bright unless regulations disrupt their market development.

The Neurological Impact of Continuous Nicotine Exposure in Adolescents

Continuous nicotine exposure during adolescence can have profound implications on the development and well-being of individuals in this critical stage of life. As the prevalence of nicotine use among adolescents continues to be a significant public health concern, understanding the impact of this addictive substance on young minds and bodies is crucial. We explored the various dimensions of nicotine exposure in adolescents, from its effects on brain development and cognitive function to the social, emotional, and educational consequences. By looking into the complexities of adolescent nicotine addiction, we can better comprehend the challenges faced by this vulnerable population and develop potential strategies for prevention and intervention.

Effects of positive mGlu5 modulation on D2 signaling and nicotine-conditioned place preference: Mechanisms of epigenetic inheritance in a transgenerational model of drug abuse vulnerability in psychosis.

The metabotropic glutamate type 5 (mGlu5) receptor has emerged as a potential target for the treatment of psychosis that is suggested to have greater efficacy than antipsychotic medications that are currently utilized. This study sought to elucidate mechanisms of therapeutic action associated with the modulation of the mGlu5 receptor in a disordered system marked by dopamine dysfunction. We further explored epigenetic mechanisms contributing to heritable transmission of a psychosis-like phenotype in a novel heritable model of drug abuse vulnerability in psychosis. F1 generation male and female Sprague-Dawley rats that were the offspring of two neonatal quinpirole-treated (QQ) or two saline-treated (SS) animals were tested on nicotine-conditioned place preference (CPP). Regulators of G protein signaling 9 (RGS9) and β-arrestin 2 (βA2), which mediate dopamine (DA) D2 signaling, were measured in the nucleus accumbens shell, prelimbic and infralimbic cortices. Reduced Representation Bisulfite Sequencing (RRBS) was used to analyze the cytosine methylation in these brain regions. Pretreatment with the mGlu5-positive allosteric modulator 3-Cyano-N-(1,3-diphenyl-1H-pyrazol-5-yl)benzamide (CDPPB) 20 min prior to conditioning trials blocked enhanced nicotine CPP and mitigated aberrant G protein-dependent and -independent signaling in QQ animals. RRBS analysis revealed region-specific changes in several pathways, including nicotine addiction, dopamine synapses, and neural connectivity. These results reveal an important region-specific mechanism of action for CDPPB in a system marked by enhanced DAD2 receptor signaling. Results additionally reveal DNA methylation as an epigenetic mechanism of heritability, further validating the current model as a useful tool for the study of psychosis and comorbid nicotine use.

Insilico Identification of Association between Nicotine Dependence and Pathogenic Missense Mutations of Catechol-O-Methyltransferase Gene

Introduction: Oral cancers are known to be strongly associated with the usage of tobacco, which is majorly composed of nicotine. Genetic studies evidenced the nicotine addiction as hereditary. AIM: The aim of the present study is to analyse any genetically functional missense mutations in Catechol-O-methyl-transferase (COMT) gene and derive an association with nicotine dependence that might influence tobacco habit initiation, addiction, and cessation. Methodology: The study involved an insilico analysis about the association between COMT gene and nicotine dependence. This was done with the help of different databases available in website. Initially, database called Ensembl (https://asia.ensembl.org) was used to pool the genetic data on missense mutations of the human COMT gene. The collected data was then fed into computational tools such as SIFT, PolyPhen, PROVEAN, I-Mutant, MutPred to discover the pathogenic mutations if exists. Results: Among 78 missense mutations collected, 74 were identified as damaging variants in which 8 variants were found to cause increased protein stability and 66 were found to cause decreased protein stability. Among those 66 missense variants causing decreased protein stability, 25 variants were identified as highly pathogenic while 19 variants were identified as pathogenic. Conclusion: The in-silico analysis discovered the existence of highly pathogenic mutations in COMT gene which might have a strong association with nicotine dependence that can influence the tobacco habit initiation, addiction, and cessation.

E-Cigarettes in Smoking Cessation and Harm Reduction: A Comprehensive Review of Recent Evidence and Potential Risks

The global prevalence of tobacco use has significantly decreased over the years, with projections indicating further decline. However, the rise of new nicotine products suggests that nicotine addiction will remain a major public health issue. Electronic cigarettes (e-cigarettes) are increasingly recognized as potential tools for smoking cessation and harm reduction. This review evaluates the safety and effectiveness of e-cigarettes both as standalone treatments and in combination with other therapies, such as nicotine replacement therapy (NRT), varenicline, cytisine, and behavioral approaches. A comprehensive analysis of studies published over the past decade, including systematic reviews, meta-analyses, and randomized controlled trials, shows that e-cigarettes can enhance smoking cessation rates and reduce tobacco-related harm. They exhibit comparable short-term efficacy to traditional treatments, with promising results in alleviating withdrawal symptoms and lowering smoking rates. However, the long-term safety and effectiveness of combining e-cigarettes with other therapies remain uncertain and require further investigation. Despite their potential benefits, e-cigarettes pose significant safety concerns, underscoring the need for ongoing research to refine cessation strategies and ensure their safe, long-term use. Rigorous evaluation and regulatory oversight are essential to optimize e-cigarettes' role in reducing tobacco harm.

E-cigarette retail outlets in Mexico: a country that bans the sale.

Restrictive e-cigarette policies have not allowed for the characterization of the sale of these tobacco products in the countries where they are implemented. This is because it is believed that there are no stores. However, the use of e-cigarettes persists in these countries. A content analysis of electronic cigarette points of sale through the internet in Mexico was conducted. Cross-sectional study. Structured searches were performed in the Google Maps search engine with the terms "electronic cigarette store" and "vape store" in combination with the name of each state of Mexico, in the period from October 2021 to February 2022. A total of 695 e-cigarette stores were located, of which 481 (69.2%) were physical stores, 207 hybrid stores (29.8%), 4 online stores (0.6%) and 3 (0.4%) vending machines. A total of 316 e-cigarette brands and 578 vape liquid brands were identified. The sales attraction strategy they used the most was free shipping of products (85.8%). Stores used WhatsApp (92.5%), Facebook (86.3%) and Instagram (74.4%) to promote their products. Only 35.1% of stores checked the age of their customers, of which, 95.9% asked if the customer was of legal age and 4.1% asked for the date of birth. In addition, 25.6% of the stores warned about nicotine addiction and 24.2% specifically about the ingredients of the liquids. E-cigarettes are widely available and marketed in a variety of retail outlets in Mexico. The high number of stores, brands of liquids, and e-cigarettes indicates non-compliance with existing regulations. E-cigarette consumption has increased globally, even in countries with restrictive regulations. However, there is limited data on the density and characteristics of vape stores in low- and middle-income countries with restrictive regulations. This study found no significant differences in e-cigarette sales between countries with permissive and restrictive regulations. Therefore, it is suggested that, in addition to establishing restrictive policies on the sale of e-cigarettes, their enforcement should also be monitored. Countries with restrictive measures should regulate Internet sales and promotion of e-cigarettes with greater emphasis.

Preclinical evidence of the effects of sweet flavors: Sweetness increases nicotine intake and seeking.

The influence of early exposure to sweet and fruit flavors on subsequent nicotine use behaviors during adolescence remains poorly understood. To address this gap, we utilized a rodent model to simulate childhood flavor exposure and examine its effects on later nicotine use behaviors. We employed a two-bottle choice paradigm in weanling rats to mimic human childhood flavor exposure. Subsequently, we investigated the impact of early exposure to sweet (saccharin) and cherry fruit (benzaldehyde) flavors on adolescent nicotine use behaviors. This included assessing subsequent nicotine acquisition, maintenance, and seeking behaviors using intraoral flavor and intravenous nicotine self-administration. Our findings reveal that rats exposed to saccharin during early development exhibited altered patterns of nicotine intake and seeking behaviors during adolescence. Specifically, rats demonstrated increased nicotine intake and seeking of saccharin flavored solutions when paired with nicotine, indicating a potential predisposition towards nicotine use following childhood flavor exposure. Intraoral benzaldehyde did not affect nicotine reinforcement in early sessions of self-administration, but significantly decreased nicotine reinforcement during later sessions. Both saccharin exposure alone or in combination with benzaldehyde promoted nicotine reinforcement. No significant sex differences in nicotine-related behaviors were observed. This study highlights the significance of early flavor exposure in shaping adolescent nicotine use behaviors. The findings suggest that childhood exposure to sweet flavors may contribute to heightened susceptibility to nicotine use and addiction later in life. Understanding these early influences is crucial for developing targeted interventions to prevent the onset of nicotine addiction during adolescence. Our study highlights the importance of how sweetness can contribute to and possibly even alter the effects of the flavor itself. The sweetness of a tobacco product does not solely stem from sweeteners, but it is also influenced by other components such as the PG/VG ratio (e.g., higher VG) and the inclusion of flavors associated with sweetness (e.g., vanillin and ethyl maltol). Therefore, sweet-associated constituents in tobacco products should be investigated further to inform regulatory policy. We believe that our findings can inform regulatory decisions on controlling sweet associated constituents in tobacco products.

Nicotine addiction is the main risk factor for the formation and development of chronic obstructive pulmonary disease: A review

The article considers the issue of studying the effect of nicotine dependence on the development of chronic obstructive pulmonary disease, as the main factor in the formation of inflammation mediated through the use of tobacco-containing, as well as alternative tobacco products, not only the epithelium of the bronchi, but also the endothelial cells of large and small vessels. Morphological changes in bronchopulmonary structures lead to pronounced tissue hypoxia, which in turn aggravates the course of the underlying disease, leads to the formation of concomitant pathology in the form of cardiovascular diseases, pathology of blood rheology, increased risks of thrombosis. Without considering the risks of early death in this context, we can say with confidence that a decrease in the level of quality of life and human activity will directly depend on the availability of constant and prolonged use of nicotine-containing products.

Exposure to nicotine and withdrawal in Wistar rats: an electrophysiological study.

Throughout the world, smoking is one of the principal causes of preventable death. Nicotine, the primary active component of tabacco, acts as a psychostimulant and modulates the electrical activity of a number of the areas of the brain involved in addiction. Abstinence from nicotine will also impact the functional state of the brain, which is reflected in symptoms of craving and susceptibility to relapse. In addition, given the increase in the sympathetic tone of the heart and pulse rate promoted by nicotine, its consumption can contribute to tachyarrhythmia. The present study investigated the electroencephalographic (EEG) and electrocardiographic (ECG) patterns of Wistar rats submitted to acute or chronic exposure to nicotine, followed by withdrawal for 24 or 48 hours, and the re-administration (or not) of nicotine, to simulate episodes of relapse. The EEG data revealed an increase in all types of brainwaves, with emphasis on high-frequency (alpha, beta, and gamma) brain oscillations following both acute and chronic exposure to nicotine (14 days), whereas in withdrawal, there was a predominancy of delta waves. When exposure to nicotine was reinstated after withdrawal, the observed EEG profile was similar to that found in chronic exposure. The electrocardiogram reads showed that both acute and chronic exposure to nicotine caused abnormalities in the atrioventricular conduction and that, while these changes improve with substance withdrawal, relapse can worsen these parameters. The results of this study indicate that high-frequency brainwaves are correlated with nicotine dependence, while slow brain oscillations are consistent with drug craving, and episodes of nicotine relapse can reproduce brain activity patterns linked to dependence. Finally, exposure to nicotine predisposes the individual to heart rhythm abnormalities, which are attenuated by withdrawal, but may nevertheless be restored rapidly with re-exposure to the substance. This study demonstrated that nicotine increases high-frequency brain oscillations, which is associated with addiction, whereas withdrawal elevates the delta wave power, suggesting craving. Re-exposure to nicotine following withdrawal restores rapidly the EEG profile of chronic dependence. In addition, nicotine has deleterious impacts on cardiac activity, which are linked to fatal arrhythmias. This implies that stopping smoking is beneficial for the amelioration of the alterations in heart rhythm caused by nicotine addiction. This study elucidates the functional states of the brain and heart during both sporadic and chronic nicotine use, and the electrophysiological explanation for substance dependence and drug relapse after craving episodes.

Impact of smokeless tobacco on psychological and oxidative stress in unemployed indian youth

In India, tobacco (nicotine) addiction among youth has increased, leading to substantial socioeconomic burdens, mortality, and morbidity. While minimal short-term nicotine consumption may have antioxidant effects, chronic exposure results in various adverse health outcomes. This study examines the impact of chronic nicotine consumption on cellular oxidative stress and psychological stress, and their correlation with Homocysteine (Hcy) levels in unemployed tobacco consumers. This case-control study included 156 healthy, educated, unemployed male volunteers aged 20–40 years, divided into nicotine-addicted (n = 80) and non-addicted (n = 76) groups. Psychological stress was assessed using perceived stress scales (PSS) and coping self-efficacy (CSE) scales. Oxidative stress markers, including Malondialdehyde (MDA), Superoxide Dismutase (SOD), and Catalase, were measured. Hcy levels were quantified using high-performance liquid chromatography (HPLC). Nicotine-addicted participants exhibited significantly higher perceived stress (p = 0.0001) and lower coping self-efficacy (p = 0.0001) compared to non-addicted individuals. MDA levels in erythrocytes were significantly increased (p = 0.0006), while SOD (p = 0.0001) and Catalase (p = 0.02) activities were significantly decreased in the addicted group. Nicotine intake influenced Hcy concentrations, with 55% of addicted individuals falling into moderate, 27.5% into intermediate, and 7.5% into severe Hcy categories. Chronic nicotine intake also reflected the hematological parameters (WBCs, RBCs, HGB, and Platelets). Chronic tobacco consumption induces oxidative stress and perceived psychological stress, leading to elevated Hcy levels in nicotine consumers. The study highlights the detrimental effects of nicotine addiction on cellular defensive mechanisms, emphasizing the need for targeted interventions to address this growing health issue among unemployed Indian youth.

Addiction among high school students: determination of nicotine, substance, game, and internet addiction levels

ABSTRACT Aim The aims of this study were to determine the levels of cigarette smoking, psychoactive substances, game, and internet addiction among high school students and to examine whether addictions show a significant difference according to some socio-demographic variables and the relationships between addiction types. Method A total of 530 high school students studying in Turkey, agreed to participate in the study. Data were collected through face-to-face interviews using the Sociodemographic Questionnaire (which contains DSM-V categories of addictive substances), Fagerström Test for Nicotine Dependence (FTND), Game Addiction Scale (GAS), and Internet Addiction Test (IAT). Results Approximately 1.9% of the respondents were smokers and 0.8% were inhalant users. Respondents scored 7.43 ± 2.88 on FTND, 13.92 ± 5.57 on the GAS, and 43.44 ± 18.80 on the IAT. Male respondents received a higher average score on the GAS than female respondents, and female respondents received a higher average score on the IAT than male respondents. As body mass index increased, a statistically significant, positive and moderate correlation was found between GAS scores and IAT scores. Conclusion Addictions are becoming more and more widespread and measures, information, and research should be increased and young people should be educated about addictions.