Indoor Air Cartoon Journal

Indoor Air Cartoon Journal, October 2023, Volume 6, #147

[Cite as: Fadeyi MO (2023). Impact of exposure to secondhand smoke on the risk of cognitive impairment in children and adults. Indoor Air Cartoon Journal, October 2023, Volume 6, #147.]

Fictional Case Story (Audio – available online) 

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The escalating impact of secondhand smoke exposure on the cognitive abilities of children, adolescents, and adults, particularly those residing in refugee camps, remained an urgent concern. The absence of conclusive evidence hindered the formulation of effective solutions to address this pressing issue. It was a girl’s poignant journey from refugee to advocate that provided the missing link, combining personal experience with a determination to uncover the connection between secondhand smoke and cognitive impairment. Her unwavering commitment led her to furnish the essential evidence and guidance needed to tackle this challenge. The remarkable life of this girl, whose transformative journey sheds light on the profound impact of her efforts to bridge the gap between a growing problem and its viable solutions, is the subject of this short fiction story.

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In a hilly, tropical rainforest small village named Maziba in a country called Chandritok lived a young girl called Amaka Rafael. Amaka was the only child of her parents. Amaka was a curious child who liked to ask questions, eager to learn and explore the world. Her parents, who were farmers living in poverty, recognised her exceptional intellect and encouraged her to pursue her education despite their limited financial resources and hard-to-get income.

Amaka’s parents believed in her potential and instilled in her the value of knowledge despite having only primary education. They believed education would liberate their daughter and the family’s future generation. As Amaka grew, her passion for learning continued to blossom. She spent countless hours reading books and asking questions about the world around her. Her teachers were astounded by her enthusiasm and aptitude for a wide range of subjects. Amaka’s dreams knew no bounds, and she aspired to become a scientist and make a difference in the world. Despite being poor, Amaka and her parents were happy and had aspirations for a better future.

One sunny morning, the skies in the village, which had always been a brilliant blue, turned to an unpleasant shade of gray. As people in the village went about their daily routines, a distant rumble, like the growl of an approaching storm, filled the air. A 14-year-old Amaka, playing near her family’s farm, could sense the tension that suddenly permeated the atmosphere.

A civil war erupted in Amaka’s country and extended to her village without warning. A storm of chaos and violence descended upon the once-peaceful village. Amaka’s family, like many others, was caught in a chaotic civil war that had erupted. Homes that had stood for generations were reduced to rubble, and the deafening sounds of destruction and death replaced the laughter of children playing in the streets.

Amaka’s family, with their faces etched with fear and sorrow like many other people, made the agonising decision to leave their beloved home. They hastily gathered what little they could carry, leaving behind cherished mementos and the familiarity of the village where Amaka had spent her entire childhood. The displacement was sudden, and the path they embarked upon was fraught with danger and uncertainty.

Their journey was a perilous one, marked by days of relentless walking and nights spent huddled in anything that resembled a shelter. They eventually got to a border called the Choco border, where they were shipped out of the country. Many people from Amaka’s village and many other citizens of Chandritok died on their way to the Choco border. The Choco border was the only border that was opened at that time, and it was opened for a limited period. Other borders were closed and never opened during the war. Very few people seeking refugee out of Chandritok were shipped out of the country at the Choco border.

Amaka’s father got shot on the way to the Choco border. Amaka and her mother tried their best to nurse and encourage him to keep moving to hopefully reduce the already high risk of being killed. They eventually got to the Choco border. It was the condition of Amaka’s father that allowed the people in charge to give priority to Amaka and her parents to board the ship. Many people at the location who did not get the chance to get on the limited number of ships taking people out of Chandritok but camped at the location in the hope of leaving the country later perished in the war.

Amaka’s once-joyful heart now carried the weight of the world. The constant struggle for survival became their new reality, and Amaka found herself yearning for the peace and security she had once taken for granted. This abrupt transformation from a life of tranquility and dreams of becoming a scientist to one of displacement and survival was a harsh lesson in the unpredictability of fate. Amaka’s dreams, which had been nurtured by the warmth of her community and her family’s unwavering support, seemed distant and unattainable in this new world.

Amaka, who had been the pride of her parents and village, was now just another refugee in a peaceful foreign country called Porschiam, fighting for a chance at a better future. As they left behind the remnants of their town, Amaka carried with her the memories of a life forever changed and the resilience to face the unknown. It was a journey that would test her spirit and courage.

In the refugee camp, life was a daily struggle for Amaka and her parents. The refugee camp was overcrowded, and resources were scarce. It was a daily struggle to find food, clean water, and a sense of normalcy. Tents and makeshift shelters provided the only semblance of a home, and the future seemed uncertain. Yet, amidst the harsh conditions and uncertainty, Amaka’s parents did their best to ensure she had the essentials for survival. People in the refugee camps in Porschiam were not allowed to mix freely with people of Porschiam, creating a sense of a future with little or no opportunities for Amaka and many children at the camps.

Amaka’s parents remained deeply committed to Amaka’s education despite knowing that refugee camps were places where dreams often went unfulfilled. Amaka’s father, a man of great wisdom and love for learning, would spend hours sharing stories and life experiences with Amaka. He instilled in her a love for books and the belief that education was the key to a better future. The books Amaka read were part of the international donations for the displaced people living in the refugee camp.

Amaka’s parents, like many others, held onto the hope of returning to Chandritok one day, a hope that, unfortunately, would never be realised. Tragedy struck when Amaka’s mother fell ill seven months after living in the refugee camp. She suffered from cholera due to the severe unsanitary situation at the camp. Amaka’s mother’s situation worsened by the day, and the limited medical professionals and resources in the camp were unable to save her. The death of Amaka’s mother caused significant psychological stress for Amaka’s father. Amaka was deeply affected, too, as she was very close to her mother, as she was to her father.

A few months later, the psychological stress led to a low immune system for Amaka’s father. Amaka’s father subsequently succumbed to the wound he sustained in the civil war and died. For context, serious sickness in the refugee camp was like a death sentence because of limited medical facilities and supplies. The profound loss of her parents, who had been her guiding light in a world of uncertainty, caused Amaka immeasurable grief.

However, she knew that her parents would want her to continue with her life and education, as it had always been their greatest wish. Amaka became even more determined to pursue knowledge, not only for herself but also to honour her parents’ memory. As she grew older, Amaka’s resilience and thirst for knowledge remained unwavering. She realised that education was her only lifeline to a future with the promise of brighter days. She tried not to think about what the situations at the camp could do to deem the thoughts of a brighter future.

An opportunity for a formal education arose when a foreign aid organisation set up a school. Amaka was among the first students to enroll. Back in her village, she had been an enthusiastic learner, and here, in the camp, she embraced this chance to gain knowledge and hope. Amaka’s days were filled with learning and the promise of a better future. She captured the attention of the aid workers. They recognised her potential and offered her a unique opportunity to work as an assistant to the camp’s coordinator, a compassionate woman named Dr. Ailian Chen. Dr. Chen also became Amaka’s mentor.

In her new role, Amaka was responsible for helping with various administrative tasks and organising educational materials for the camp’s students. She listened to Dr. Chen’s stories about distant lands, cultures, and medical professional experience as a doctor working with Doctors without Borders. Amaka gained valuable experience along the way. Amaka’s experience as an assistant to Dr. Chen allowed her to become more self-reliant and self-assured.

Years passed, and as a young woman, Amaka continued her studies, guided by the caring Dr. Chen. She dreamt of a world beyond the camp’s confines, a world filled with knowledge, understanding, and opportunities. With the support of Dr. Chen and the aid organisation, Amaka was granted a full scholarship to study environmental engineering at the National University of Porschiam, a world-class university. Amaka’s interest in creating a healthier and more sustainable future for humans and the environment influenced her choice to study environmental engineering.

As she embarked on her undergraduate studies in environmental engineering, she began to develop a deep interest in the quality of the air people breathe, particularly in the indoor environments where they spend so much of their lives. This newfound passion stemmed from her growing awareness of the significant impact that indoor air quality can have on human health and well-being.

During her undergraduate studies, she delved into the multifaceted world of environmental engineering, where she was exposed to the intricacies of air quality monitoring, ventilation systems, and pollution control technologies. The more she learnt, the more she realised that indoor air quality was a critically important but often overlooked aspect of public health.

Amaka learnt that indoor air quality is a complex and dynamic field that encompasses a wide range of factors revolving around sources and sinks (removal) of indoor air pollutants and phenomena (which includes indoor air chemistry) that increase and decrease the intensity of the sources and sinks. She learnt how these factors can significantly influence the health and work performance of occupants in homes, offices, schools, and other indoor spaces. She soon became captivated by the idea that through her work as an environmental engineer, she could directly contribute to improving the quality of life for countless people.

Amaka’s undergraduate studies were marked by a relentless pursuit of knowledge and an unyielding commitment to making a positive impact on the lives of those who had experienced hardship. As she delved into her undergraduate studies in environmental engineering, the issue of indoor air quality and its implications on human health beckoned to her like an uncharted territory waiting to be explored. She was captivated by the intricate relationship between the air people breathe and their well-being.

Amaka’s professors and mentors noticed her fervour for this field of study, which went beyond the classroom. Her inquisitiveness led her to devour academic papers, conduct experiments, and participate in discussions with experts in the field. Amaka’s understanding of the complex interplay between indoor air quality and human health deepened with each passing day.

A pivotal moment in Amaka’s undergraduate studies came when she got a rare opportunity to attend a conference on environmental engineering and air quality as an undergraduate student. There, she had the opportunity to engage with leading researchers, health professionals, and policymakers who shared her passion for improving the quality of the air people breathed. Amaka learnt from the literature and experts she interacted with and experienced firsthand the following about the possible cause of the increase in the prevalence of cigarette smoking in refugee camps and the possible impacts of secondhand smoking on human health.

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The conditions in refugee camps, characterised by trauma, stress, disrupted education, poor living conditions, limited access to healthcare, language and cultural barriers, lack of specialised support, and economic hardship, can contribute to an increase in the number of people smoking for several reasons.

Many individuals in refugee camps face immense stress and trauma because of forced displacement, conflict, and loss of homes and loved ones. Smoking can be seen as a coping mechanism to alleviate stress and provide a temporary sense of relief. Trauma and stress can lead to mental health issues, such as anxiety and depression. Some individuals turn to smoking to self-medicate and manage their mental health symptoms.

Smoking may be culturally ingrained in some refugee populations, and the experience of shared cigarettes can serve as a social bonding activity within the camp community. Disrupted education and poor living conditions may result in limited opportunities for recreational and leisure activities. Smoking may provide a simple and accessible form of recreation and distraction. In the close-knit community of refugee camps, there may be peer pressure to smoke, especially if smoking is perceived as a common coping strategy among camp residents.

Refugees often face economic hardship, making it challenging to access essential goods and services. Tobacco products can be relatively cheap and easily accessible, making them an affordable source of stress relief or momentary pleasure. Limited access to healthcare in refugee camps may mean that individuals do not receive adequate support or interventions for quitting smoking. This lack of access to smoking cessation programmes and resources can perpetuate the habit.

Communication barriers, both linguistic and cultural, can hinder the dissemination of information on the health risks associated with smoking. As a result, some refugees may not be fully aware of the dangers of smoking. The absence of specialised support services, including mental health services, addiction treatment, and counseling, can make it challenging for individuals to address underlying issues that contribute to smoking. Economic hardship and limited employment opportunities in refugee camps can lead individuals to seek comfort or alleviate boredom through smoking, especially if it is one of the few affordable pleasures available.

The prevalence of cigarette smoking increases the prevalence of secondhand smoke. When individuals are exposed to secondhand smoke, they inhale a variety of harmful chemicals, including nicotine, carbon monoxide, and fine particulate matter (PM2.5). These substances enter the bloodstream through the lungs and are then distributed throughout the body, including the brain. Nicotine, a key component of tobacco smoke, can constrict blood vessels, including those in the brain. This constriction reduces blood flow to the brain, potentially leading to decreased oxygen and nutrient delivery to brain cells. Adequate blood flow is essential for optimal cognitive function.

Secondhand smoke contains inflammatory agents that can lead to chronic inflammation in the body, including the brain. Chronic inflammation has been linked to cognitive decline and neurodegenerative diseases, such as Alzheimer’s disease. Secondhand smoke contains free radicals and other oxidative agents that can cause oxidative stress in the brain. Oxidative stress can damage brain cells and impair cognitive function. Nicotine affects the release of neurotransmitters, including dopamine and acetylcholine, which play essential roles in cognitive processes such as attention, memory, and learning. Disruption of these neurotransmitter systems can impact cognitive function.

Children exposed to secondhand smoke may experience more severe effects on cognitive development. Secondhand smoke exposure during pregnancy and early childhood has been associated with developmental delays, learning difficulties, and behavioural problems. Nicotine in secondhand smoke can have stimulant effects on the brain, leading to improved short-term attention and concentration in some individuals. However, this can also result in addiction and withdrawal symptoms when not exposed to secondhand smoke.

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Amaka could not ignore the urgency of the matter. She knew that she had to do something, not only for herself but for all those who were still living amidst the challenges she had left behind in her refugee camp. She reasoned that if little is known or no scientific evidence about the relationship between secondhand smoke exposure and the cognitive ability of people living in refugee camps is available, an informed decision on interventions to protect the people and provide chances for a better future supported by high cognitive ability may not be made as needed. Amaka’s journey from a girl in a refugee camp to a university student wanting to give back to refugee camps was a testament to her resilience and kindness to people. She never forgot her roots or the struggles that had shaped her.

Amaka graduated with a first-class honours degree in environmental engineering with a minor in engineering education from the National University of Porschiam. Her grade cumulative point average (CGPA) was 4.86 out of 5. Her high CGPA led her to get a PhD position with a scholarship at the prestigious Vanguard University. At that time, Vanguard University was ranked as the best university in the world in engineering. Dr. Chen and everyone at her refugee camp were happy and proud of Amaka. Dr. Chen, Amaka’s next of kin, was at Amaka’s graduation to celebrate with her.

Amaka worked hard and diligently during her PhD studies. She scored As in the six modules she took and got distinction for her PhD qualification examinations. When students passed their PhD qualifying examination, their academic status changed from PhD students to PhD candidates. As a PhD candidate, Amaka proceeded to carry out her research plan. The following is a summary of Amaka’s research plan. The research plan was designed to answer the question relating to the link between exposure to secondhand smoke and the risk of cognitive impairment.

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Refugee camps used for the study to answer the research question were randomly selected from different regions worldwide. To ensure a globally representative sample, a computer algorithm was adopted to generate random samples. The computer algorithm was based on multistage sampling. Multistage sampling combines several sampling techniques, which in this case include cluster sampling, stratified random sampling, and simple random sampling.

In cluster sampling, the population is divided into clusters, i.e., refugee camps, and a random sample of clusters is selected. Then, within each camp, the population is divided into subgroups based on certain characteristics (e.g., age, gender, exposure levels), and then a random sample is drawn from each stratum, with every individual in the population having an equal chance of being selected. This ensures that each subgroup is represented in the sample.

A baseline assessment was done to establish a starting point for the study. Cognitive tests were administered to measure various aspects of cognitive function, such as memory, attention, problem-solving, and language skills of the participants in the study. The tests used were standardised and validated for the relevant age groups in the study. Demographic data from participants, including age, gender, education level, and family composition, were collected. Participants in the study are non-smokers.

Relevant health history, such as pre-existing medical conditions, history of trauma, and any past cognitive or mental health issues, was also collected. The collected data helped to provide context for the understanding of the study population and potential confounding factors that might introduce biases in the study.

Exposure assessment was done to gather data on the extent of secondhand smoke exposure, including the number of smokers in the household of the participants before and during their time in the refugee camp, smoking restrictions, and duration of exposure. The number of individuals who smoke within the household was recorded. The gathered data and information generated from it helped gauge the intensity of secondhand smoke exposure and where it occurred.

Data was collected on whether there are any smoking restrictions or designated smoking areas within the camp to evaluate the effectiveness of policies in reducing exposure. The duration of secondhand smoke exposure, considering how long individuals have been exposed and how many hours per day or week they were exposed, was also examined.

Standardised cognitive tests appropriate for the age groups under investigation were administered. Cognitive tests of the Wechsler Intelligence Scale for Children (WISC) were used to evaluate the cognitive abilities of participants who were children and adolescents under the age of 18. The children participants in this study have an age range of 6 to 12 years. Adolescent participants have an age range of 13 to 17 years. Cognitive tests of the Wechsler Adult Intelligence Scale (WAIS) were used to evaluate the cognitive abilities of participants aged 18 years and older. The cognitive abilities tested were verbal comprehension, perceptual reasoning, working memory, processing speed, and general cognitive abilities.

In addition to cognitive function and secondhand smoke exposure, data was collected on other relevant health factors. The nutritional status of participants was assessed through dietary surveys, as malnutrition can affect cognitive development. Questionnaires were administered to evaluate mental health conditions, such as depression, anxiety, and post-traumatic stress disorder. Mental health can be a confounding factor in cognitive assessments.

Throughout the data collection process, participants’ confidentiality and privacy were ensured. Informed consent was obtained. Efforts were made to administer tests and questionnaires consistently. Rigorous data quality control measures were put in place to minimise errors and biases in the collected data.

To assess the impact of secondhand smoke exposure on cognitive function, cognitive test scores between exposed and unexposed participants within different age groups were compared. Unexposed participants mean there were no smokers in the household or adjacent households of the participants in the refugee camp and before living in the refugee camp. Analysis of variance (ANOVA) was used to determine if there were significant differences in cognitive performance between groups.

The association between cognitive impairment and the duration of secondhand smoke exposure was analysed. This analysis was done to determine whether individuals exposed for longer durations have more pronounced cognitive impairment. Regression analysis, such as linear and logistic regression, depending on the specific research question being addressed, was used to assess the relationship between exposure duration and cognitive impairment while controlling for other variables.

To ensure that the observed relationships are not due to other factors, the study controlled for confounding variables. These variables include trauma, education, and nutritional status, among others. Confounding variables were controlled using multiple regressions to draw valid conclusions. The relationship between cognitive function and the number of smokers in the household was examined. This analysis was done to determine whether increased exposure due to a higher number of smokers has a stronger impact on cognitive function. Correlation analysis and regression analysis were used in the assessments of this relationship.

Stratified analyses were done to account for variations in the relationships between different age groups. This means analysing the data separately for children, adolescents, and adults and comparing the results. The stratified analysis helped to identify any age-specific effects.

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Years of hard work, dedication, and late-night research led to groundbreaking findings that highlighted the undeniable link between secondhand smoke exposure and cognitive impairment, especially in vulnerable children and adolescents. Amaka’s research emphasised the role of exposure duration and called for early interventions and policy changes to protect young minds.

The research findings confirm a substantial and statistically significant association between the intensity of exposure and exposure duration to secondhand smoke and the risk of cognitive impairment among residents of refugee camps worldwide. This association was observed across various age groups, highlighting the universality of the issue.

Participants exposed to secondhand smoke consistently demonstrated lower cognitive scores when compared to unexposed individuals. These lower scores were indicative of cognitive deficits that encompassed the range of cognitive functions studied. The effect size of the relationship between secondhand smoke exposure and cognitive impairment varied by age group, with more substantial effects observed in children and adolescents compared to adults.

The magnitude of the effect was such that it was clinically and socially significant. Cognitive impairment ranged from mild to moderate, with some individuals exhibiting more severe deficits. These deficits affected daily life activities and had implications for educational attainment and overall well-being.

Children within the age range of 6-12 years exhibited the most pronounced cognitive impairment when exposed to secondhand smoke. The severity of cognitive deficits was notably higher in this age group. The risk of cognitive impairment was significantly elevated in children who had been exposed to secondhand smoke from birth or during their earliest developmental years. Early exposure appeared to have a lasting impact on cognitive function. Cognitive function deficits in children were primarily manifested in areas such as attention, memory, and problem-solving skills. This had implications for their academic performance, as these skills are fundamental for learning and cognitive development.

Adolescents (13-17 years) exposed to secondhand smoke also exhibited cognitive challenges, albeit to a somewhat lesser degree compared to children. The effects were particularly noticeable in cognitive domains related to attention and processing speed. Cognitive deficits in these areas had implications for academic performance and the ability to focus and process information efficiently. Adolescents exposed to secondhand smoke faced challenges in educational settings.

In contrast to children and adolescents, the impact of secondhand smoke exposure on cognitive function in adults (18+ years) was less pronounced. The cognitive deficits observed were milder in nature, although they were still statistically significant. Cognitive deficits in adults were primarily related to cognitive flexibility and executive function. These areas encompass skills such as planning, decision-making, and adaptability, which are crucial for daily life activities.

The study demonstrated a clear and statistically significant association between longer exposure to secondhand smoke and more severe cognitive deficits. Individuals who had been exposed for extended periods, especially during childhood, displayed the most pronounced cognitive impairment. The risk of cognitive deficits increased as the duration of exposure to secondhand smoke extended beyond two years, with a more substantial impact on cognitive function. Shorter exposure durations (less than 2 years) did not result in severe cognitive impairment compared to longer exposure. The findings underscore the importance of not only reducing secondhand smoke exposure but also addressing the duration of exposure as a critical factor.

The research findings supported the notion that children exposed to secondhand smoke, especially over extended periods and high intensity in the context of the number of smokers, are particularly vulnerable to cognitive impairment. The developing brain is highly sensitive to the neurotoxic components of secondhand smoke, leading to more substantial deficits.

The study suggested a potential cumulative effect of secondhand smoke exposure on cognitive health. As individuals were exposed for more years, the cognitive deficits became increasingly severe. This cumulative effect highlights the need for early interventions to prevent and reduce secondhand smoke exposure, particularly in children.

Amaka noted in her PhD study that her research is subject to limitations, including self-reporting biases and challenges in controlling for all potential confounding variables. She also noted that while the research design controlled for several factors, unmeasured variables may influence the results. The concluding part of Amaka’s PhD thesis contains information on her suggested areas for future research.

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It was noted that future research should explore the implementation and effectiveness of smoking cessation programmes tailored to the specific context of refugee camps. She suggested that the impact of such programmes on reducing secondhand smoke exposure among residents and improving overall health outcomes should be investigated.

Research on the assessment of the effectiveness of health education and awareness campaigns aimed at both refugees and camp staff was suggested. She suggested that these campaigns should focus on the health risks associated with smoking and secondhand smoke exposure, as well as the benefits of smoke-free environments. There was a suggestion of embarking on studies that examine the impact of improved ventilation systems and indoor air quality interventions within living quarters in refugee camps. And noted that assessing the effectiveness of such measures in reducing secondhand smoke exposure is crucial.

Amaka suggested that research investigating the relationship between mental health support and reduced smoking and secondhand smoke exposure should be conducted. Amaka reasoned that it is important to understand how trauma-informed care and mental health interventions can influence smoking behaviour and health outcomes in refugee populations. She suggested future research should evaluate the impact of implementing and enforcing smoke-free policies within refugee camps. The effectiveness of policy enforcement and compliance among camp residents was suggested to be examined.

Amaka suggested that studies should be conducted to investigate not only the reduction of secondhand smoke exposure but also the subsequent impact on health outcomes and the quality of life for refugees. She advised that the suggested research could encompass cognitive function, respiratory health, and overall well-being. She noted that it is important to understand how changes in exposure levels influence health outcomes over time.

Amaka believed comparative studies across multiple refugee camps can help identify best practices in reducing secondhand smoke exposure and improving health. She reasoned that such studies can also shed light on the influence of varying camp conditions and policies. She advised that the cost-effectiveness of interventions to reduce secondhand smoke exposure should be evaluated to help decision-makers allocate resources efficiently to improve living conditions and health in refugee camps.

Investigation on the role of community engagement and participation in the success of interventions to reduce secondhand smoke exposure was suggested to be examined. She suggested that understanding the challenges and facilitators of community involvement should be considered. She suggested research should be done to examine the unique challenges and effects of interventions on particularly vulnerable populations within refugee camps, such as pregnant women, children, and individuals with pre-existing health conditions.

Amaka suggested that research should address the sustainability of interventions, including the maintenance of reduced secondhand smoke exposure over time. The assessment of how interventions can be integrated into long-term camp management strategies was suggested. She encouraged cross-disciplinary research that involves experts in public health, psychology, social work, and environmental science to comprehensively address the issue of secondhand smoke exposure and its mitigation.

She advised collaboration with non-governmental organisations (NGOs) and health agencies to facilitate and support future research endeavours in refugee camps, ensuring that research findings are translated into meaningful interventions. She suggested the above areas for future research to ensure a continued focus on improving the health and well-being of refugees in camp settings while reducing the risks associated with secondhand smoke exposure.

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Amaka’s journey from her groundbreaking PhD research was nothing short of remarkable. As her research findings gained international recognition, doors to the world of academia and public health swung wide open for her.

Amaka’s exceptional research findings catapulted her into the world of postdoctoral studies, where she had the opportunity to collaborate with renowned scientists and experts in the field of public health. She joined esteemed research teams at the world’s most prestigious university, Manson Institute of Technology (MIT). She took part in global initiatives aimed at improving the health and well-being of vulnerable populations. Amaka’s passion for change and unwavering commitment to enhancing cognitive abilities in the face of adversity shone through in every project she undertook.

As Amaka’s reputation and impact grew, she returned to Porschiam to become an assistant professor at the National University of Porschiam. On her return, Amaka applied for and was granted citizenship of Porschiam. It was a rare occasion in which a refugee became a citizen in Porschiam. Amaka’s classroom became a hub of inspiration and innovation. Amaka’s students admired her tenacity, resilience, and the incredible journey that had brought her from a refugee camp to a respected scientist and educator.

Amaka’s life story served as a beacon of hope and motivation for her students. Amaka’s students witnessed firsthand the power of determination and the potential for one individual to spark positive change in the world. They became impassioned, carrying her message of hope and dedication forward into their own careers.

With each passing year, Amaka’s influence and impact continued to grow. She was promoted to associate professor, and her academic work and humanitarian endeavours were now widely recognised and celebrated. Amaka’s expertise in the field of indoor air pollutants and their effects on cognitive health made her a celebrity sought-after expert. Finally, she was promoted to the title of full professor. Her pioneering research on indoor air pollutants had made her a world-renowned scientist, admired for her unwavering commitment to creating a better world.

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Amaka’s tireless efforts and commitment to humanitarian causes extended far beyond her role as an educator and scientist. Her dedication to reducing exposure to indoor air pollutants in refugee camps and vulnerable communities became a driving force for positive change worldwide. Her collaborative work with humanitarian organisations was characterised by a practical and hands-on approach to addressing the issue of indoor air pollution. She recognised that solutions needed to be actionable and attainable for the communities most affected.

Amaka worked closely with camp authorities, government agencies, and local communities to enforce and strengthen smoke-free policies. One of the key initiatives Amaka championed was the implementation of improved ventilation systems in refugee camps. She understood that better air circulation was essential in reducing the concentration of indoor air pollutants. Her research and advocacy played a pivotal role in designing and implementing ventilation systems that not only filtered out pollutants but also enhanced the overall living conditions within the camps.

Amaka believed in the power of knowledge and awareness to effect change. She initiated educational campaigns to raise awareness about the risks associated with indoor air pollutants, particularly secondhand smoke. These initiatives involved community workshops, informative pamphlets, and educational sessions that empowered individuals to make informed decisions about their living environments.

Amaka’s approach was rooted in community engagement and participation. She believed in empowering individuals and communities to take ownership of their health and well-being. Through dialogue and collaboration, she encouraged residents to adopt smoke-free practices, air cleaners or filtration systems, and ensure the proper use of improved ventilation systems.

Of note is her emphasis on the importance of risk management to reduce exposure to secondhand smoke that could cause cognitive impairment. The following extracts are some of her speeches during her educational campaign.

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Risk is the probability of something capable of causing harm and damage, i.e., hazard, actually causing harm and damage to something capable of being harmed and damaged, i.e., vulnerable. [Risk = Hazard x Vulnerability]. Vulnerability level can also be taught as the risk level for every unit of hazard level: [Vulnerability = Risk / Hazard]. A hazard level can also be taught as the risk level for every unit of vulnerability level: [Hazard = Risk / Vulnerability]. Harm is the initial action that leads to damage. Harm is the disruption to the structure or bond of a system, and the extent of that disruption determines the level of damage. Damage is the extent to which a system is rendered not valuable.

For example, indoor air containing secondhand smoke (SHS) is a hazard. The indoor air’s hazardous level (likelihood of causing harm and damage) will increase with an increase in SHS’s amount and toxicity. The vulnerability level of a person exposed to indoor air will depend on the person’s physiological condition. Psychological, economic, and social conditions can also affect physiology and exposure levels.

Inflammation, oxidative stress, disruption to physiological processes, and reduction in the volume of brain parts are examples of the manifestation of harm. The extent of the inability of the compromised physiological system, because of the harm, to support a person’s cognitive ability is the damage level.

Evidence from our research findings suggests that chronic exposure to secondhand smoke can have detrimental effects on the structural integrity of the brain. We found that chronic exposure to secondhand smoke is linked to reductions in overall brain volume. This means that individuals exposed to secondhand smoke may have smaller brain structures compared to those who are not exposed. These reductions can be observed in specific regions of the brain.

We observed that chronic exposure to secondhand smoke can lead to structural changes, such as reduced volume in the hippocampus, which plays a crucial role in memory formation and emotional regulation. We observed that chronic exposure to secondhand smoke can lead to structural changes in the prefrontal cortex responsible for executive functions, including decision-making, problem-solving, and impulse control. Chronic exposure to secondhand smoke has been associated with disruptions in white matter integrity, affecting the brain’s ability to transmit signals efficiently. The white matter in the brain consists of nerve fibers that facilitate communication between different brain regions.

Our findings suggest that exposure to secondhand smoke may accelerate brain aging, leading to structural changes that are typically associated with older age. We observed that this can result in cognitive decline and an increased risk of neurodegenerative conditions. We observed that secondhand smoke exposure can impact blood vessels in the brain, reducing cerebral blood flow and potentially leading to structural changes due to inadequate oxygen and nutrient supply.

Our research findings suggest that the structural changes in the brain resulting from chronic exposure to secondhand smoke can have long-term consequences for cognitive function and overall brain health. These changes are a cause for concern, particularly in individuals exposed during critical developmental periods, such as childhood.

It is no surprise I have made it a duty to work with my team and collaborators to campaign for the reduction of exposure to secondhand smoke to minimise the risk of these structural changes and to protect brain health. We are constantly advocating for the creation of smoke-free environments and the promotion of public health policies to reduce smoking in public spaces and indoor environments to prevent these adverse effects on the brain.

We observed in our research that the higher the amount of cotinine in the body resulting from a person’s exposure to secondhand smoke, the worse the cognitive performance. However, the decrement is more evident at lower cotinine levels. We advise non-smokers’ exposure to secondhand smoke should be minimised as much as possible because of the possible sharp decrement in the cognitive abilities they are familiar with.

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Now, at the age of 76, Amaka found herself in a place of contentment and reflection. Her incredible journey from a refugee camp to a world leader, scientist, humanitarian, and educator had been nothing short of extraordinary. She had dedicated her life to improving the cognitive health and well-being of countless individuals and communities around the world.

Her unwavering commitment to reducing exposure to indoor air pollutants, particularly secondhand smoke, left an indelible mark on the world. Her tireless efforts, pioneering research, and humanitarian initiatives created healthier and more promising futures for countless individuals, especially the most vulnerable, by reducing their capability of being harmed.

Amaka was not alone in this remarkable journey. She had been supported every step of the way by her loving husband, whom she married when she returned to the National University of Porschiam to start her faculty position. Her husband had been her rock and source of inspiration. Their enduring partnership had been a testament to the power of love and shared values.

Amaka and her husband were now living a serene life, enjoying the fruits of their labour, and basking in the love of their family. They had raised three accomplished children, each of whom had inherited Amaka’s passion for positive change. Her children had gone on to pursue their own careers in various fields, including public health, education, and humanitarian work.

Amaka’s heart swelled with pride as she watched her children carry forward the legacy of compassion, dedication, and a commitment to making the world a better place. They had embraced her values and were contributing to the betterment of society in their own unique ways. Amaka’s joy did not end with her children. She was also blessed with the laughter and love of her grandchildren.

As she held them close, she saw in their eyes the same spark of curiosity and determination that had driven her throughout her life. Amaka knew that her legacy would continue for generations, with her grandchildren carrying the torch of her passion for positive change. Amaka’s parents’ belief that education would liberate their daughter and the family’s future generation became a reality.

Amaka’s life was a testament to the enduring power of one individual’s commitment to making a difference. She had shown that even in the face of adversity, and despite the most challenging circumstances, one could rise above and change the world. Amaka, the former refugee turned world leader, scientist, humanitarian, and educator, had not only improved cognitive health but had also created a legacy of love, compassion, and a brighter future for all. Her story served as an inspiration for her family and for the world, a reminder that the impact of one life, lived with purpose, could be immeasurable. The End!