Health Consequences Research Articles

Nanotechnology - An advanced dental innovation

Researchers are interested in exploring the possible uses and advantages of nanotechnology compared to traditional materials, particularly in the domains of dentistry and medicine. The study and creation of materials, tools, systems with distinct biological, chemical, physical characteristics from those found in larger system is known as nanotechnology. Numerous advancements and improvement in oral disease prevention, diagnosis, and treatment are possible because of nanotechnology. Recent Nano - technology breakthrough developments in dentistry are progressively providing a viable therapeutic option for a wide range of dental problems. The purpose of this review was to provide an overview role of nanotechnology in dentistry, as well as to evaluate its application in the prevention and treatment of oral disorders, along with providing crucial new updates on the various nanotechnology – based techniques for dental disease management. The current review will also assist the reader in comprehending Nano science, as well as its benefits and drawbacks, by discussing its ethical, social, and health consequences. In addition, Nano -applications in dental diagnostics and their function in dentistry will be discussed.

Bridging the evidence-to-practice gap: exploring dental professionals' perspectives on managing oral health during pregnancy in Tasmania, Australia.

Poor oral health is associated with adverse health, social and economic consequences for pregnant women. While dental professionals promote good oral health within the dental practice context, more broadly, women in the antenatal period face poor oral health outcomes. Therefore, this study explored dental professionals' perceptions of their role in managing the oral health of pregnant women and identified the barriers and facilitators to improving maternal oral health. This study employed a descriptive qualitative method utilizing semi-structured interviews. Convenience and snowball sampling were used to recruit 13 dental professionals from Tasmania, Australia, comprising dentists (n = 10), oral health therapists (n = 2) and dental therapist (n = 1). Interviews were audio-recorded, transcribed verbatim and analysed using inductive thematic analysis. Three major themes were constructed from the interviews: (1) dental professionals' oral health care of women during pregnancy; (2) perceived challenges to maternal oral health; and (3) proposed strategies to improve maternal oral health. Findings suggest dental professionals' competence in maternal oral health, but that several barriers, such as dental care access and maternal factors, hinder oral health outcomes. To address these barriers, oral health policies that support interprofessional collaboration, professional training and evaluation of existing community oral health programmes are needed. © 2024 Australian Dental Association.

Navigating health challenges: the interplay between occupation-imposed movement restrictions, healthcare access, and community resilience

BackgroundTransportation plays a significant role in health, community resilience, and access to basic needs such as healthcare, social services, education, and job opportunities. Health and community resilience are, however, impacted by a multitude of complex and unequal factors, such as transportation restrictions exacerbated by the Israeli occupation. The goal of the research was to examine the intricate relationships that exist in Palestine between movement restrictions imposed by occupation, health outcomes, and community resilience.MethodA self-structured questionnaire, devised based on expert conversations and previous literature, was used in this descriptive, quantitative study to explore health and resilience outcomes. Age, gender, marital status, place of residence, and means of transportation were among the various factors that were utilized to describe the socio-demographics of the study sample (n = 202). The researchers employed stepwise multiple regression and descriptive statistics for the data analysis.ResultsStudy findings indicated that transportation restrictions have significant direct and indirect health consequences. A significant direct effect is observed, signifying a negative correlation between restrictions and health; increased transportation restrictions are consistently correlated with a decline in health. The study emphasized how place of residence affects health outcomes, with higher scores for campers and people living in green line areas. It also underscores that public means of transportation are found to be better for health outcomes than private cars.ConclusionThis study emphasized that roadblocks, checkpoints, and military incursions make it difficult for Palestinians to receive medical care, which has a detrimental impact on their health and well-being. It also underscores the need for significant reforms in Palestinian health and transportation systems to enhance infrastructure and healthcare access. The Palestinian Authority should invest in public transportation and community resilience programs to address transportation-related health issues, especially in villages, due to frequent settler attacks.

A quantitative feedback intervention to reduce binge drinking in young adults.

Existing binge drinking reduction interventions such as brief intervention and personalized normative feedback have shown modest impact. The purpose of this study was to evaluate the feasibility (recruitment and retention rates), acceptability, and preliminary efficacy testing of a short-term "know your numbers (KYN)" intervention on motivating young adults to reduce their engagement in binge drinking. Young adults (N=94, mean age 21 years) with a history of binge drinking received a 4-week KYN intervention that included information about their U.S. Alcohol Use Disorders Test (USAUDIT) scores and the alcohol biomarker phosphatidylethanol (PEth) level in relationship to different risk levels of alcohol use. At baseline and 4-weeks, measures included USAUDIT scores, PEth levels, motivation (Alcohol Contemplation Ladder) and other drinking measures. Focus groups were conducted at 4-weeks for feedback on the KYN approach. The recruitment rate was 82.26% (retention rate 76.9%). At 4-weeks there was a 62% increase in contemplation scores (indicating higher motivation), a decrease in USADUIT scores with an increase in the percent of participants classified as low-risk drinkers. No differences were found between baseline and 4-week PEth levels or number of binge episodes. Focus group results revealed satisfaction with the KYN approach but the need to understand how PEth levels and USAUDIT scores corresponded to health consequences and alcohol use levels. Results from this pilot study support the acceptability and potential use of a KYN approach in helping young adults understand their drinking levels.

Seasonal Variation in Short-Term Ambient Air Pollutants and ST-Elevation Myocardial Infarction Admissions: An Innovative Exploration of Air Pollution’s Health Consequences

Seasonal Variation in Short-Term Ambient Air Pollutants and ST-Elevation Myocardial Infarction Admissions: An Innovative Exploration of Air Pollution’s Health Consequences

Modeling polycyclic aromatic hydrocarbons (PAHs) concentrations from wildfires in California

In recent years, wildfires in California have increased in frequency and intensity due to climate change and prolonged drought. The air pollutants released by wildfires cause significant health consequences, among which polycyclic aromatic hydrocarbons (PAHs) are particularly toxic. Estimating PAH emissions from wildfires is challenging due to variability in vegetation types. In this study, we estimate PAH emission rates across California at a high resolution, based on laboratory-measured PAH emission rates from 22 different vegetation types and detailed vegetation mapping. By combining these estimates with biomass burning data from the NCAR Fire Inventory, the Community Multiscale Air Quality Modeling System simulates PAH concentrations for the 2017 fire season. The modeling results compare favorably to measurements from three PAH monitoring sites in California. The peak PAH emissions from wildfire events are up to be 80 times higher in the gas phase and 32 times higher in the particle phase compared to a case without fire emissions. The population-weighted PAH concentrations from the fire case (0.053 µg/m3) are 47 % higher compared to a non-fire case (0.036 µg/m3) in the particle phase and 11 % higher in the gas phase (9.82 ppt compared to 8.83 ppt) during the study period. While highly depended on the meteorological condition, the simulated spatial distribution indicates that gas-phase PAHs are less likely to travel long distances from the fire source and are prone to aging into the particle phase during transport. Consequently, populations are more likely to be exposed to particle-phase PAHs during wildfire events. This finding has important implications for understanding the health impacts of wildfire-induced PAH concentrations, as particle-phase PAHs may have different toxicological effects compared to gas-phase PAHs.

Private Equity-Backed Steward Healthcare Files for Bankruptcy

No abstract available. Article truncated after 150 words. Arizona Attorney General Kris Mayes (1) has launched an investigation into what led to Dallas-based Steward Health Care filing for Chapter 11 bankruptcy protection on May 6. The health system also recently shared that it is $9 billion in debt and has plans to sell all 31 of its hospitals, four of which are in Arizona and have a proposed auction date of June 28, according to a May 10 news release from Ms. Mayes (1). Steward relied on backing from private equity investors to quickly acquire dozens of community hospitals, including facilities in Massachusetts, Texas, Florida, and Arizona. Steward has been the focus of a year-and-a-half-long CBS News investigation revealing how private equity investors have siphoned hundreds of millions of dollars from community hospitals with devastating public health consequences (2). Records reviewed by CBS News showed Steward hospitals around the country left a trail of unpaid bills, at times …

A surge in food insecurity during the COVID-19 pandemic in a cohort in Mexico City.

The COVID-19 pandemic has not only caused tremendous loss of life and health but has also greatly disrupted the world economy. The impact of this disruption has been especially harsh in urban settings of developing countries. We estimated the impact of the pandemic on the occurrence of food insecurity in a cohort of women living in Mexico City, and the socioeconomic characteristics associated with food insecurity severity. We analyzed data longitudinally from 685 women in the Mexico City-based ELEMENT cohort. Food insecurity at the household level was gathered using the Latin American and Caribbean Food Security Scale and measured in-person during 2015 to 2019 before the pandemic and by telephone during 2020-2021, in the midst of the pandemic. Fluctuations in the average of food insecurity as a function of calendar time were modeled using kernel-weighted local polynomial regression. Fixed and random-effects ordinal logistic regression models of food insecurity were fitted, with timing of data collection (pre-pandemic vs. during pandemic) as the main predictor. Food insecurity (at any level) increased from 41.6% during the pre-pandemic period to 53.8% in the pandemic stage. This increase was higher in the combined severe-moderate food insecurity levels: from 1.6% pre-pandemic to 16.8% during the pandemic. The odds of severe food insecurity were 3.4 times higher during the pandemic relative to pre-pandemic levels (p<0.01). Socioeconomic status quintile (Q) was significantly related to food insecurity (Q2 OR = 0.35 p<0.1, Q3 OR = 0.48 p = 0.014, Q4 OR = 0.24 p<0.01, and Q5 OR = 0.17 p<0.01), as well as lack of access to social security (OR = 1.69, p = 0.01), and schooling (OR = 0.37, p<0.01). Food insecurity increased in Mexico City households in the ELEMENT cohort as a result of the COVID-19 pandemic. These results contribute to the body of evidence suggesting that governments should implement well-designed, focalized programs in the context of economic crisis such as the one caused by COVID-19 to prevent families from the expected adverse health and well-being consequences associated to food insecurity, especially for the most vulnerable.

Three distinct patterns of mental health response following accidents in mountain sports: a follow-up study of individuals treated at a tertiary trauma center.

The restorative effect of physical activity in alpine environments on mental and physical health is well recognized. However, a risk of accidents and post-accident mental health problems is inherent to every sport. We aimed to characterize mental health in individuals following mountain sport accidents requiring professional medical management. Adult victims of mountain sport accidents treated at the hospital of the Medical University of Innsbruck (Austria) between 2018 and 2020 completed a cross-sectional survey at least 6months following the admission (median 44 months, n = 307). Symptoms of post-traumatic stress disorder (PTSD, PCL-5), anxiety, depression, and somatization (PHQ), resilience (RS-13), sense of coherence (SOC-9L), post-traumatic growth (PTGI), and quality of life (EUROHIS-QOL), as well as sociodemographic and clinical information, were obtained from an online survey and extracted from electronic health records. Mental health outcome patterns were investigated by semi-supervised medoid clustering and modeled by machine learning. Symptoms of PTSD were observed in 19% of participants. Three comparably sized subsets of participants were identified: a (1) neutral, (2) post-traumatic growth, and (3) post-traumatic stress cluster. The post-traumatic stress cluster was characterized by high prevalence of symptoms of mental disorders, low resilience, low sense of coherence, and low quality of life as well as by younger age, the highest frequency of pre-existing mental disorders, and persisting physical health consequences of the accident. Individuals in this cluster self-reported a need for psychological or psychiatric support following the accident and more cautious behavior during mountain sports since the accident. Reliability of machine learning-based prediction of the cluster assignment based on 40 variables available during acute medical treatment of accident victims was limited. A subset of individuals show symptoms of mental health disorders including symptoms of PTSD when assessed at least 6 months after mountain sport accident. Since early identification of these vulnerable patients remains challenging, psychoeducational measures for all patients and low-threshold access to mental health support are key for a successful interdisciplinary management of victims of mountain sport accidents.

The misuse of codeine containing medicines: Perceptions and behaviours of qualified pharmacy professionals

Background: Pharmacy professionals working in community pharmacies frequently provide pharmacist-initiated therapy, including codeine-containing medicines. Codeine is an opioid with great potential for misuse, adding to the global opioid epidemic burden. Professional pharmacy personnel are the first intervention point in relation to management of codeine use. This study highlights the importance of pharmacy professionals’ perceptions and behaviours in combatting the opioid epidemic.Methods: A descriptive cross-sectional study was conducted. Simple random sampling included pharmacy professionals in the metropolitan city of Johannesburg. An electronic questionnaire was distributed via e-mail and data analysed descriptively.Results: Findings indicate that pharmacy personnel routinely ask patients about codeine use (n = 48; 53.9%), avoid dispensing over-the-counter (OTC) codeine as an initial treatment (n = 61; 69%) and express confidence to identify and manage codeine misuse (n = 69; 77.5%). Despite this, increased patient demands for OTC codeine (n = 69; 77.5%) were concerning, highlighting the ease of availability from internet sources (n = 76; 85.4%) and multiple pharmacies (n = 84; 94.4%). Apprehension about the lack of patient awareness on adverse health consequences (n = 66; 74.2%) and the risk of codeine dependence (n = 79; 88.8%) was expressed.Conclusion: Growing concern regarding availability and accessibility of codeine-containing medicines within the community pharmacy sector is highlighted. Adverse health consequences of codeine misuse and dependence are not understood by customers and the ineffective information provided by pharmacy personnel was highlighted as a concern.Contribution: The results of this study give insight to the influence of dispensing personnel’s attitude towards the growing challenges with respect to codeine containing medication abuse.

Recent insights in the correlation between social media use, personality traits and exercise addiction: a literature review

Introduction and aimThe excessive involvement in physical activity without stopping in between sessions despite injuries, the continuous thinking to exercise feeling insane thoughts and experiencing withdrawal symptoms are all characteristics of the Exercise Addiction (EA), an addictive behavior. While the primary exercise addiction is directly caused by compulsive exercise, many studies highlighted the relationship between Eating Disorders (ED) and EA, defining the secondary EA. The correlation between EA, social media use (SMU) and other individual traits remains a relatively underexplored domain. Therefore, this review aimed to examine the latest evidence on the relationship between EA, SMU, and some personality traits such as perfectionism and body image.MethodsElectronic databases including PubMed, Medline, PsycARTICLES, Embase, Web of Science were searched from January 2019 to October 2023, following the PRISMA guidelines.ResultsA total of 15 articles were examined and consolidated in this review. EA was found to be related to different individual traits such perfectionism, body dissatisfaction, depression, obsessive-compulsive personality disorders. While controversial results were found regarding the relationship between EA and SMU.ConclusionThe interaction between mental health, exercise addiction and social media use is complex. Excessive engagement in these latter may result in negative mental health consequences despite their potential benefits. Understanding individual differences and developing effective interventions is crucial to promoting healthy habits and mitigating the EA risks, ultimately enhancing mental well-being. Further research should focus on the identification of risks and protective factors with the eventual aim of developing and implementing effective prevention strategies.

Monitoring Mycotoxin Exposure in Food-Producing Animals (Cattle, Pig, Poultry, and Sheep)

Food-producing animals are exposed to mycotoxins through ingestion, inhalation, or dermal contact with contaminated materials. This exposure can lead to serious consequences for animal health, affects the cost and quality of livestock production, and can even impact human health through foods of animal origin. Therefore, controlling mycotoxin exposure in animals is of utmost importance. A systematic literature search was conducted in this study to retrieve the results of monitoring exposure to mycotoxins in food-producing animals over the last five years (2019–2023), considering both external exposure (analysis of feed) and internal exposure (analysis of biomarkers in biological matrices). The most commonly used analytical technique for both approaches is LC-MS/MS due to its capability for multidetection. Several mycotoxins, especially those that are regulated (ochratoxin A, zearalenone, deoxynivalenol, aflatoxins, fumonisins, T-2, and HT-2), along with some emerging mycotoxins (sterigmatocystin, nivalenol, beauvericin, enniantins among others), were studied in 13,818 feed samples worldwide and were typically detected at low levels, although they occasionally exceeded regulatory levels. The occurrence of multiple exposure is widespread. Regarding animal biomonitoring, the primary objective of the studies retrieved was to study mycotoxin metabolism after toxin administration. Some compounds have been suggested as biomarkers of exposure in the plasma, urine, and feces of animal species such as pigs and poultry. However, further research is required, including many other mycotoxins and animal species, such as cattle and sheep.

Prevalence of sexual harassment and its association with aspects self-reported health: A cross-sectional study in Sweden.

Sexual harassment is common and may have serious consequences for well-being and health. We investigated the prevalence of sexual harassment in the general population of Stockholm County across socio-demographic groups and sexual identity, and its association with self-reported health. Experiences of sexual harassment in the previous 12 months and its associations with self-reported health (depression, anxiety, suicidal ideation) were assessed in 2021/2022 among a random sample of 22,890 residents in Stockholm County aged 16 and older. Analyses were done using descriptive statistics and multivariate logistic regression (odds ratios and 95% confidence intervals (CI)). Calibration weights were used to estimate population-representative rates with 95% CI. The highest weighted prevalence was observed among 16- to 24-year-olds (18.9%, 95% CI 16.9%-20.9%). Women (9.5%; 95% CI 8.8%-10.1%) reported a higher prevalence than men (2.9%; 95% CI 2.5%-3.3%). Compared to heterosexual people, bisexual and homosexual people reported a higher prevalence of sexual harassment. No significant difference was observed related to country of birth. People who were students, unemployed or on sick leave were more exposed than employed people, although this was not significant when adjusted for age and registered sex. Experiences of sexual harassment was associated with higher odds of all aspects of self-reported health. Experiences of sexual harassment in the general population are common and associated with adverse self-reported health. There is a need for enhanced efforts to prevent sexual harassment in the general population and to empower specific risk groups such as women and sexual minorities.

Smart Handling of Biomedical Waste using Intelligent Deep Learning and IOT

Hospitals create an enormous volume of potentially hazardous trash. Currently, bandages, plastic papers, wasted pus, syringes, glucose drip bottles, other dangerous medical wastes, and containers are separated by hand, resulting in long-term health consequences such as tuberculosis, cancer, and infectious diseases. Rag pickers are currently responsible for the majority of waste separation. Efficient management of medical waste demands not only precise segregation but also real-time monitoring and notification systems to ensure timely intervention and optimized waste handling. This project proposes an integrated solution combining deep learning, image processing, Embedded Systems hardware and Internet of Things (IoT) technologies. Medical waste will be detected using the Deep Learning technique; A deep learning model is trained on a diverse dataset to classify medical waste items, and image processing techniques are utilized to enhance the accuracy of the classification process. This holistic approach offers an efficient and automated system for medical waste management integrating waste segregation, waste level monitoring, and timely notifications, thereby ensuring a sustainable and responsible waste management process in healthcare facilities.

Khat use and related determinants among pregnant women within Haramaya, Ethiopia: a mixed methods study

IntroductionKhat, a green leafy plant grown in East Africa and throughout the Arabian Peninsula, is chewed for its psychoactive and amphetamine-like effects, serving as a significant aspect of culture, economic livelihood, and global trade. Khat consumption during pregnancy has been associated with adverse effects, including anemia, premature rupture of membranes, and low birth weight, among others.MethodsThis cross-sectional, explanatory sequential mixed methods study was conducted in the Haramaya District of eastern Ethiopia using a questionnaire and focus group discussions. Questionnaires assessed socio-demographic information, pregnancy history, and diet, including khat use. Data were analyzed using SPSS v28 to include descriptive statistics, proportions, odds ratios, binary logistic regression, and chi-square analysis. FGDs expanded on the knowledge, attitudes, and practices of khat in the region, including pregnant or lactating women from two different kebeles. Two independent reviewers conducted a qualitative content analysis to examine the qualitative findings from the FGDs. Transcripts from the focus groups were entered into NVivo 14 to aid in capturing salient themes.ResultsA total of 444 pregnant women with a median age of 25 years completed the questionnaire. Two-thirds of the women, 66.9%, reported currently consuming khat while pregnant, and 72.7% of them reported daily consumption. The FGD analysis resulted in the discovery of five themes: Economic Livelihood, Maternal Significance, Medicinal Implications of Khat, Pesticide Use, and Social and Cultural Applications.DiscussionThis study revealed an alarming high prevalence of khat consumption among pregnant women in the Haramaya District, highlighting the pressing need for long-term studies to assess the health consequences. The role of khat as both an economic staple and an energy source for daily activities underscores the challenges in curbing its use. The documented health risks associated with the chemicals used in khat cultivation, including cancer, call for interventions to enhance safe agricultural practices in households involved in khat farming.

Growth of Romaine Lettuce in Eggshell Powder Mixed Alginate Hydrogel in an Aeroponic System for Water Conservation and Vitamin C Biofortification

Vitamin C is crucial for physical well-being, and its deficiency can lead to severe health consequences. Biofortification has been used to address this deficiency by enhancing vitamin C in plants. Additionally, soilless agriculture has been used to conserve and optimize water use in comparison to conventional agriculture. While hydrogels have been shown to improve water conservation and are used for biofortification in crops, their application has only been explored in soil-based and hydroponic farming. The aeroponics system is a plant-growing method that has shown potential for increasing yields and biomass while conserving water and nutrients. In this paper, we have developed an aeroponic-compatible medium to grow romaine lettuce (Lactuca sativa L.) with eggshell powder (ESP) mixed with calcium-alginate hydrogel as a substrate and nutrient source aiming to conserve water and incorporate vitamin C through biofortification. Herein, lower water spray time and higher intervals, with varied gel types and ESP concentrations, resulted in healthy lettuce growth. Plants treated with 0.5% ascorbic acid-absorbed ESP-mixed alginate hydrogel for biofortification showed higher levels of vitamin C compared to the traditional method. This study suggests using an alginate hydrogel–ESP-based substrate in aeroponics to reduce water usage and enhance plant biofortification of vitamin C.

Characterising methamphetamine/amphetamine use among opioid agonist therapy-seeking adults with prescription-type opioid use disorder in Canada.

There has been a significant increase in methamphetamine/amphetamine use in North America, particularly among people who use opioids. Despite its association with several negative health consequences, the population of people who use methamphetamine/amphetamine with opioids is not well characterised. The aim of this study was to investigate correlates of methamphetamine/amphetamine use among adults with prescription-type opioid use disorder (POUD) starting methadone or buprenorphine/naloxone as part of a pragmatic randomised treatment trial in Canada. Multivariable logistic regression analyses were used to determine factors associated with baseline methamphetamine/amphetamine use (measured by urine drug test [UDT]) among participants of a pan-Canadian pragmatic trial conducted between 2017 and 2020 comparing supervised methadone versus flexible take-home dosing buprenorphine/naloxone models of care in people with POUD (e.g., licit or illicit, including fentanyl, prescribed or not). The sample included 269 participants, of which 142 (52.8%) had positive baseline methamphetamine/amphetamine UDT. In the multivariable model, positive fentanyl UDT (adjusted odds ratio [AOR] 13.21, 95% confidence interval [CI] 6.45, 28.30), non-fatal overdose in the last 6 months (AOR 2.26, CI 1.01, 5.17) and a lifetime history of opioid agonist therapy exposure prior to study entry (AOR 2.30, CI 1.09, 4.87) remained positively associated with baseline methamphetamine/amphetamine use. In this sample of people with POUD, methamphetamine/amphetamine use was associated with markers of complex and severe OUD, including overdose risk. This suggests the need for targeted interventions to optimise treatment outcomes and prevent future overdoses in this population. Available at: ClinicalTrials.gov NCT03033732.

Tobacco Cessation: A Review

Tobacco use is one of the biggest public health threats. Tobacco use is clearly a big hazard in terms of its magnitude and use in different forms. There is no safe level of exposure to tobacco, as users can experience health consequences at any age. Globally, it accounts for 8 million deaths every year, among which 1.3 million are due to second-hand smoking. It also has heavy social and economic burdens. Tobacco is the most important preventable cause of death and disease among adults. The burden of tobacco-related illness and death is heaviest in low- and middle-income countries, due to a lack of public awareness, inadequate healthcare infrastructure, and weak regulatory interventions. Most of the tobacco users who become aware of the dangers of tobacco-use want to quit. However, the nicotine present in tobacco products is highly addictive and makes it difficult to quit. Without proper cessation support, hardly 4% of users who attempt to quit tobacco use will succeed. Tobacco cessation in the adult population is essential to accelerate the reduction in smoking-related morbidity and mortality.

Reducing childhood mortality extends mothers’ lives

During the twentieth century, childhood mortality was dramatically reduced globally, falling by more than 90% in the United States and much of Europe. Total fertility also fell, with the combined result that many parents who otherwise would have experienced the loss of a child were spared the trauma and negative health consequences that accompany such a loss. Here I use mathematical modeling to argue that the reduction in the frequency of child death that occurred in the twentieth century indirectly led to a substantial reduction in female mortality, resulting in an extension of female lifespan. I estimate that the reduction in maternal bereavement in the US during the twentieth century indirectly increased mean female lifespan after age 15 by approximately 1 year. I discuss implications for our understanding of the persistence of the sex gap in longevity and approaches to improving maternal health outcomes in countries that still face high levels of childhood mortality.

Epigenetic mechanisms linking early-life adversities and mental health.

Early-life adversities, whether prenatal or postnatal exposure, have been linked to adverse mental health outcomes later in life increasing the risk of several psychiatric disorders. Research on its neurobiological consequences demonstrated an association between exposure to adversities and persistent alterations in the structure, function, and connectivity of the brain. Consistent evidence supports the idea that regulation of gene expression through epigenetic mechanisms are involved in embedding the impact of early-life experiences in the genome and mediate between social environments and later behavioral phenotypes. In addition, studies from rodent models and humans suggest that these experiences and the acquired risk factors can be transmitted through epigenetic mechanisms to offspring and the following generations potentially contributing to a cycle of disease or disease risk. However, one of the important aspects of epigenetic mechanisms, unlike genetic sequences that are fixed and unchangeable, is that although the epigenetic markings are long-lasting, they are nevertheless potentially reversible. In this review, we summarize our current understanding of the epigenetic mechanisms involved in the mental health consequences derived from early-life exposure to malnutrition, maltreatment and poverty, adversities with huge and pervasive impact on mental health. We also discuss the evidence about transgenerational epigenetic inheritance in mammals and experimental data suggesting that suitable social and pharmacological interventions could reverse adverse epigenetic modifications induced by early-life negative social experiences. In this regard, these studies must be accompanied by efforts to determine the causes that promote these adversities and that result in health inequity in the population.