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BACKGROUND/OBJECTIVES: Emerging adults (~18-28 years of age) have a high prevalence of poor sleeping habits and poor diet quality; however, little is known on whether these poor sleeping habits are associated with dietary outcomes in this age group. This study assessed associations between actigraphy-based sleep with energy intake (EI), overall diet quality, and measures of meal timing in emerging adults. SUBJECTS/METHODS: Data on 135 emerging adults (age = 19.4 ± 1.3 years; body mass index (BMI) = 26.5 ± 6.9 kg/m2; 58% female; 65% White) from the RIGHT Track Health project were used. Measures included actigraphy-assessed sleep duration, sleep efficiency, sleep timing midpoint, day-to-day sleep duration and sleep timing midpoint variability and combined sleep duration and sleep timing behaviors (early-bed/late-rise, early-bed/early-rise, late-bed/late-rise, late-bed/early-rise); EI (three 24-h dietary recalls), diet quality (Healthy Eating Index 2015 total score) and meal timing outcomes (timing of first and last meal intake, total duration, and midpoint of the eating window). RESULTS: Shorter sleep duration, later sleep timing midpoint and greater sleep efficiency, as well as combined late-bed/late-rise and late-bed/early-rise groups, were associated with lower diet quality. Greater sleep timing midpoint variability was associated with higher EI, and the late-bed/early-rise group had significantly delayed first meal timing. CONCLUSION: In emerging adults, shorter sleep duration and later sleep timing are associated with lower overall diet quality, and greater sleep timing variability is associated with higher EI. Future research is needed to examine the role of sleep on diet quality and eating habits to identify potential targets for nutritional interventions in this age group.
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Actigrafía , Dieta , Sueño , Humanos , Femenino , Masculino , Adulto Joven , Sueño/fisiología , Estudios Transversales , Adulto , Dieta/métodos , Adolescente , Conducta Alimentaria/fisiología , Ingestión de Energía , Comidas , Índice de Masa CorporalRESUMEN
This study assessed associations of actigraphy-assessed sleep with adiposity and serum cardiometabolic outcomes in emerging adults, and whether sex and race modified these associations. Data on 147 emerging adults (age = 19.4 ± 1.3 years; body mass index = 26.4 ± 7.0 kgâ m-2 ; 59% female; 65% White) from RIGHT Track Health were used. Actigraphy-based sleep measures included sleep duration, sleep efficiency, sleep timing midpoint, day-to-day sleep duration and sleep timing midpoint variability. Combined sleep duration and sleep timing behaviours were also derived (early-bed/late-rise, early-bed/early-rise, late-bed/late-rise, late-bed/early-rise). Outcomes included body mass index and BodPod-assessed fat mass index, fasting serum leptin, C-reactive protein, and homeostatic model assessment-insulin resistance. Sleep duration was 5.4 h per night. We noted an inverse association between sleep duration and homeostatic model assessment-insulin resistance. The early-bed/early-rise group had greater body mass index, C-reactive protein and homeostatic model assessment-insulin resistance compared with the early-bed/late-rise group (referent). Sex modified associations of sleep efficiency with C-reactive protein; stratified results revealed positive association between sleep efficiency and C-reactive protein in males, but not females. Race modified associations of sleep duration with body mass index and leptin, and of sleep duration variability with C-reactive protein. Stratified analyses revealed inverse associations between sleep duration with body mass index and leptin in Black, multiracial/other race individuals only. Positive association between sleep duration variability and C-reactive protein was noted in White individuals only. Shorter sleep duration, particularly when combined with earlier sleep timing, is associated with greater adiposity and serum cardiometabolic outcomes. Additional studies are needed to assess individual- and contextual-level factors that may contribute to sex and race differences in sleep health and cardiometabolic risk in emerging adults.
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Enfermedades Cardiovasculares , Resistencia a la Insulina , Masculino , Adulto , Humanos , Femenino , Adolescente , Adulto Joven , Adiposidad , Leptina , Actigrafía , Proteína C-Reactiva , Obesidad/complicaciones , Sueño , Índice de Masa CorporalRESUMEN
BACKGROUND: Consistent findings have reported that FFM is associated with EI. However, conjoint assessments of physiologic (body composition, fasting serum leptin) and behavioral [eating behaviors and physical activity (PA)] correlates of EI during emerging adulthood have not been examined. OBJECTIVES: We assessed associations between physiologic and behavioral correlates of EI within the context of one another in emerging adults (18-28 years old). We also assessed these associations in a subsample after the removal of probable EI underreporters. METHODS: Cross-sectional data from 244 emerging adults (age = 19.6 ± 1.4 y; BMI = 26.4 ± 6.6 kg/m2; 56.6% female) from the RIGHT Track Health study were used. Measures included body composition (BOD POD), eating behaviors (Three-Factor Eating Questionnaire), objective and subjective PA (accelerometer-derived total activity counts and Godin-Shephard Leisure-Time Exercise Questionnaire), fasting serum leptin, and EI (three 24-hour dietary recalls). Correlates independently associated with EI were entered into a backward stepwise linear regression model. Correlates that met the criteria of P < 0.05 were retained. Analyses were repeated in a subsample after removing probable EI underreporters (n = 48). Effect modification by sex (male and female) and BMI (BMI < 25 kg/m2, BMI ≥ 25 kg/m2) categories was also assessed. RESULTS: In the full sample, FFM (ß: 18.4; 95% CI: 9.9, 26.8), leptin (ß: -84.8; 95% CI: -154.3, -15.4), dietary restraint (ß: -35.2; 95% CI: -59.1, -11.3), and subjective PA (ß: 2.5; 95% CI: 0.04, 4.9) were significantly associated with EI. After the removal of probable underreporters, only FFM remained significantly associated with EI (ß: 43.9; 95% CI: 27.2, 60.6). No evidence of effect modification by sex or BMI categories was noted. CONCLUSIONS: Although physiologic and behavioral correlates were associated with EI in the full sample, only FFM remained a robust correlate of EI in a subsample of emerging adults after removing probable EI underreporters.
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Ingestión de Energía , Leptina , Adulto , Masculino , Humanos , Femenino , Adolescente , Adulto Joven , Estudios Transversales , Ingestión de Energía/fisiología , Dieta , Conducta Alimentaria/fisiología , Índice de Masa CorporalRESUMEN
Artisanal and small-scale gold mining (ASGM) is present in over 80 countries, employing about 15 million miners and serving as source of livelihood for millions more. The sector is estimated to be the largest emitter of mercury globally. The Minamata Convention on Mercury seeks to reduce and, where feasible, eliminate mercury use in the ASGM. However, the total quantity of mercury used in ASGM globally is still highly uncertain, and the adoption of mercury-free technologies has been limited. This paper presents an overview of new data, derived from Minamata ASGM National Action Plan submissions, that can contribute to refining estimates of mercury use in ASGM, and then assesses technologies that can support the phase out mercury use in ASGM while increasing gold recovery. The paper concludes with a discussion of social and economic barriers to adoption of these technologies, illustrated by a case study from Uganda.
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Mercurio , Mercurio/análisis , Oro , MineríaRESUMEN
Using a multimethod, multiinformant longitudinal design, we examined associations between specific forms of positive and negative emotional reactivity at age 5, children's effortful control (EC), emotion regulation, and social skills at age 7, and adolescent functioning across psychological, academic, and physical health domains at ages 15/16 (N = 383). We examined how distinct components of childhood emotional reactivity directly and indirectly predict domain-specific forms of adolescent adjustment, thereby identifying developmental pathways between specific types of emotional reactivity and adjustment above and beyond the propensity to express other forms of emotional reactivity. Age 5 high-intensity positivity was associated with lower age 7 EC and more adolescent risk-taking; age 5 low-intensity positivity was associated with better age 7 EC and adolescent cardiovascular health, providing evidence for the heterogeneity of positive emotional reactivity. Indirect effects indicated that children's age 7 social skills partially explain several associations between age 5 fear and anger reactivity and adolescent adjustment. Moreover, age 5 anger reactivity, low-, and high-intensity positivity were associated with adolescent adjustment via age 7 EC. The findings from this interdisciplinary, long-term longitudinal study have significant implications for prevention and intervention work aiming to understand the role of emotional reactivity in the etiology of adjustment and psychopathology.
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Adaptación Psicológica , Ira , Niño , Adolescente , Humanos , Preescolar , Estudios Longitudinales , Habilidades Sociales , Instituciones Académicas , Ajuste SocialRESUMEN
OBJECTIVES: First, to leverage 15 years of longitudinal data, from child ages 2 to 17, to examine whether maternal depressive symptoms in early and middle childhood and in adolescence predict their child's unhealthy behaviors during adolescence. Second, to examine whether the timing of maternal depressive symptoms or specific unhealthy behaviors matter and whether child depressive symptoms and body mass index explain these associations. METHODS: Data came from a prospective-longitudinal community sample with multi-informant data (N = 213) from child ages 2 to17. A cumulative adolescent unhealthy behavior index was calculated, summing the presence of poor sleep, poor diet, physical inactivity, sedentary behavior, and smoking. Regression analyses examined associations of maternal depressive symptoms in early childhood (ages 2 to 5), middle childhood (ages 7 to 10), and adolescence (age 15) with adolescents' unhealthy behaviors (ages 16 to17). Indirect effects of child depressive symptoms and body mass index were tested using a path model. RESULTS: Adolescents' unhealthy behaviors were common (eg, 2 out of 3 engaged in at least 1 unhealthy behavior). Higher levels of maternal depressive symptoms in middle childhood and adolescence were associated with adolescent engagement in more unhealthy behaviors at ages 16 to 17. Maternal depressive symptoms in early childhood were associated with adolescent unhealthy behaviors through indirect effects involving children's depressive symptoms and continuity of maternal depressive symptoms. CONCLUSIONS: Maternal depressive symptoms are associated with the number of adolescent unhealthy behaviors, both directly and indirectly. Promoting mothers' mental health can be crucial for promoting children's health behaviors and health.
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Conducta del Adolescente , Depresión , Adolescente , Conducta del Adolescente/psicología , Niño , Preescolar , Depresión/epidemiología , Depresión/psicología , Femenino , Humanos , Estudios Longitudinales , Relaciones Madre-Hijo , Madres/psicología , Estudios ProspectivosRESUMEN
The pathways through which exposure to maternal depressive symptoms in early childhood are linked to academic performance during adolescence are poorly understood. This study tested pathways from maternal depressive symptoms (age 2-5) to adolescent academic performance (age 15) through cumulative parenting risk (age 7) and subsequent child functioning (age 10), using multi-informant data from a prospective longitudinal community study spanning 13 years (N = 389, 47% male, 68% White). Structural equation models testing indirect effects revealed small associations between maternal depressive symptoms and increased cumulative parenting risk and poorer child functioning, and, via these pathways, with poorer academic performance. Thus, childhood exposure to maternal depressive symptoms may be associated with pathways of risk that could limit children's educational opportunities.
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Rendimiento Académico , Depresión , Adolescente , Niño , Preescolar , Femenino , Humanos , Estudios Longitudinales , Masculino , Relaciones Madre-Hijo , Madres , Responsabilidad Parental , Estudios ProspectivosRESUMEN
INTRODUCTION: Resting heart rate (HRrest), heart rate variability (HRV), and HR recovery (HRR) from exercise provide valuable information about cardiac autonomic control. RR-intervals during acute recovery from exercise (RRrec) are commonly excluded from HRV analyses due to issues of non-stationarity. However, the variability and complexity within these trends may provide valuable information about changes in HR dynamics. PURPOSE: Assess the complexity of RRrec and determine what physiologic and demographic information are associated with differences in these indices in young adults. METHODS: RR-intervals were collected throughout maximal treadmill exercise and recovery in young adults (n = 92). The first 5 min of RRrec were (1) analyzed with previously reported methods that use 3-interval lengths for comparison and (2) detrended using both differencing(diff) and polynomial regression(res). The standard deviation of the normal interval (SDNN), root mean square of successive differences (rMSSD), root mean square (RMS) of the residual of regression, and sample entropy (SampEn) were calculated. Repeated measures analysis of covariance (ANCOVA) tested for differences in these indices for each of the methodological approaches, controlling for race, body fat, peak oxygen uptake (VO2p eak), and resting HR (HRrest). Statistical significance was set at p < 0.05. RESULTS: VO2p eak and HRrest were significantly correlated with traditional measures of HRR and the variability surrounding RRrec. SampEndiff and SampEnres were correlated with VO2p eak but not HRrest or HRR. The residual-method provided a significantly (p = 0.04) lower mean standard error (MSE) (0.064 ± 0.042) compared to the differencing-method (0.100 ± 0.033). CONCLUSIONS: Complexity analysis of RRrec provides unique information about cardiac autonomic regulation immediately following the cessation of exercise when compared to traditional measures of HRR and both HRrest and VO2peak influence these results.
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Cardiometabolic risk (CMR) has increased among adolescents. A growing literature shows that childhood self-regulatory skills are associated with obesity and CMR. However, the developmental nature of self-regulation has not been considered in existing studies. Therefore, it is unclear how specific types of self-regulation (i.e., attentional, emotional, behavioral, cognitive) at different points in development, may differentially predict CMR. Using a multi-method longitudinal design, we assessed a sample of 117 children repeatedly between ages 2 and 16. At ages 2, 4, and 7 years, self-regulation (emotional, attentional, behavioral, and cognitive) skills that were hypothesized to have emerged were assessed. Adolescent CMR indicators were assessed at age 16. Latent profile analyses identified three profiles of adolescent CMR: Low Risk (41%), Dyslipidemia Risk (49.6%), and High Risk (9.4%). Distinct self-regulation skills at each childhood age predicted CMR during adolescence. Specifically, emotional regulation skills at ages 2 and 4, food-related behavioral regulation and attentional regulation at age 4, and attentional and cognitive regulation skills at age 7 predicted adolescent CMR. Self-regulation skills are modifiable, and thus, childhood interventions aimed at improving self-regulation could reduce CMR for decades to come. However, these results suggest that the multifaceted, developmental nature of self-regulation must be considered to most effectively inform preventive interventions aimed at lowering CMR. Additionally, our study highlights the need for additional research on adolescents who show elevations of CMR without meeting criteria for obesity.
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BACKGROUND: Research shows children's life trajectories and outcomes are strongly influenced by factors affecting development of social and academic competence that also interact with racial disparities in academic settings. Given the importance of social and academic competencies, identifying factors that promote these competencies among African American children is critical to their success over the life course. OBJECTIVE: This study examines a socioeconomically diverse sample of African American children to determine whether family-level factors promote and protect social and academic competence. METHODS: We analyze longitudinal data from a convenience sample of 97 African American children (54 girls, 43 boys) and their families who participated in a larger study of social and academic development. We analyze 2 waves of data collected when children were 7 and 10 years old. RESULTS: A series of 2-level, random-intercept, fixed-effects models show social competence is positively affected by quality of parent-child relationships, positive parenting practices, low parental stress, and routine family home environment. Similarly, academic competence is positively affected by low parental stress and family social support. CONCLUSIONS: Study findings fill a critical knowledge gap regarding predictors of social and academic competence of African American children from various socioeconomic strata. Potential avenues for intervention are discussed.
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A fundamental question in developmental science is how parental emotion socialization processes are associated with children's subsequent adaptation. Few extant studies have examined this question across multiple developmental periods and levels of analysis. Here, we tested whether mothers' supportive and nonsupportive reactions to their 5-year-old children's negative emotions were associated with teacher and adolescent self-reported adjustment at age 15 via children's physiological and behavioral emotion regulation at age 10 (N = 404). Results showed that maternal supportive reactions to their children's negative emotions were associated with children's greater emotion regulation in a laboratory task and also a composite of mother and teacher reports of emotion regulation at age 10. Maternal nonsupportive reactions to their children's negative emotions were uncorrelated with supportive reactions, but were associated with poorer child physiological regulation and also poorer mother- and teacher-reported emotion regulation at age 10. In turn, better physiological regulation at age 10 was associated with more adolescent-reported social competence at age 15. Furthermore, teacher and mother reports of emotion regulation at age 10 were associated with increased adolescent adjustment across all domains. Mediational effects from nonsupportive and supportive reactions to adolescent adjustment tested via bootstrapping were significant. Our findings suggest that mothers' reactions to their children's negative emotions in early childhood may play a role in their children's ability to regulate their arousal both physiologically and behaviorally in middle childhood, which in turn may play a role in their ability to manage their emotions and behaviors and to navigate increasingly complex social contexts in adolescence. (PsycINFO Database Record (c) 2020 APA, all rights reserved).
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Desarrollo del Adolescente/fisiología , Desarrollo Infantil/fisiología , Regulación Emocional/fisiología , Conducta Materna/fisiología , Relaciones Madre-Hijo , Ajuste Social , Habilidades Sociales , Socialización , Adolescente , Adulto , Niño , Preescolar , Femenino , Humanos , MasculinoRESUMEN
Parasympathetic nervous system functioning as indexed by respiratory sinus arrhythmia (RSA) is widely used as a measure of physiological regulation. We examined developmental patterns of children's resting RSA and RSA reactivity from 2 to 15 years of age, a period of time that is marked by considerable advances in children's regulatory abilities. Physiological data were collected from a community sample of 270 children (116 males) during a resting period and during a frustration laboratory task when the children were 2, 4, 5, 7, 10, and 15 years old. We examined both stability and continuity in resting RSA and RSA reactivity across time. We found stability in resting RSA but not RSA reactivity from toddlerhood to adolescence. Separate multilevel models were used to examine changes in resting RSA and RSA reactivity from Age 2 to Age 15. The rate of change in resting RSA slowed from Age 2 to Age 15 with a plateau around Age 10. A splined growth model indicated that the rate of RSA reactivity increased from Age 2 to Age 7 and a modest slowing and leveling off from Age 7 to Age 15. Understanding the developmental characteristics of RSA across childhood and adolescence is important to understanding the larger constructs of self- and emotion regulation. (PsycINFO Database Record (c) 2020 APA, all rights reserved).
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Desarrollo del Adolescente/fisiología , Desarrollo Infantil/fisiología , Sistema Nervioso Parasimpático/fisiología , Arritmia Sinusal Respiratoria/fisiología , Adolescente , Niño , Preescolar , Femenino , Humanos , Estudios Longitudinales , MasculinoRESUMEN
Emotional eating is associated with an increased risk of binge eating, eating in the absence of hunger and obesity risk. While previous studies with children and adolescents suggest that emotion regulation may be a key predictor of this dysregulated eating behavior, little is known about what other factors may be influencing the link between emotional regulation and emotional eating in adolescence. This multi-method longitudinal study (n = 138) utilized linear regression models to examine associations between childhood emotion regulation, adolescent weight status and negative body image, and emotional eating at age 17. Emotion regulation predicted adolescent emotional eating and this link was moderated by weight status (ß = 1.19, p < 0.01) and negative body image (ß = -0.34, p < 0.01). Higher engagement in emotional eating was predicted by lower emotional regulation scores among normal-weight teens (ß = -0.46, p < 0.001) but not among overweight/obese teens (ß = 0.32, p > 0.10). Higher scores on emotion regulation were significantly associated with lower emotional eating at high (ß = -1.59, p < 0.001) and low (ß = -1.00, p < 0.01) levels of negative body image. Engagement in emotional eating was predicted by higher negative body image among overweight/obese teens only (ß = 0.70, p < 0.001). Our findings show that while better childhood emotion regulation skills are associated with lower emotional eating, weight status and negative body image influence this link and should be considered as important foci in future interventions that aim to reduce emotional eating in adolescence.
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Insatisfacción Corporal , Peso Corporal , Ingestión de Alimentos/psicología , Regulación Emocional , Emociones , Adolescente , Bulimia , Niño , Conducta Alimentaria , Femenino , Humanos , Hambre , Modelos Lineales , Estudios Longitudinales , Masculino , Obesidad , Encuestas y CuestionariosRESUMEN
Insulin resistance, hyperinsulinemia, and Type II diabetes are increasingly common among young people in the United States. The quality of social relationships is a predictor of cardiometabolic health among adults, but has not been studied as a predictor of earlier insulin resistance. The purpose of this study was to test whether social preference (likeability) during childhood predicts insulin resistance and a measure of central adiposity during adolescence. Obesity also was examined as one mechanism through which this association occurs. Data came from a long-term longitudinal community study. At approximately age 7, 240 children were rated by their classmates on how liked and how disliked they were (difference score indexes social preference). Nine years later, at age 16, the same children visited the university laboratory where height, weight, and several measures of central adiposity (waist circumference, sagittal diameter, and waist-to-height ratio) were assessed by trained interviewers. Adolescents also provided fasted blood samples, from which HOMA-estimated insulin resistance was assessed. A path model yielded adequate to good fit indices, χ2 (3, N = 240) = 6.689, p = .08, CFI = .97, RMSEA = .07 [95% CI = .00, .14], sRMR = .03. Results indicated that greater social preference at age 7 was significantly associated with lower IR at age 16. These findings suggest that children who are less liked by their classmates are more likely to demonstrate increased risk of IR. Additionally, BMI at age 15 was positively associated with both IR and WC at age 16. A bootstrapping procedure (10,000 draws) indicated that a child's likeability is associated with IR and WC through the association of likeability with later weight status. The quality of social relationships in childhood is important to consider when trying to understand the recent rise in adolescents' cardiometabolic risk and when considering intervention strategies.
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Resistencia a la Insulina/fisiología , Obesidad/metabolismo , Distancia Psicológica , Adolescente , Glucemia , Presión Sanguínea , Índice de Masa Corporal , Peso Corporal , Niño , Preescolar , Femenino , Humanos , Insulina/sangre , Estudios Longitudinales , Masculino , Obesidad/complicaciones , Factores de Riesgo , Conducta Social , Interacción Social , Circunferencia de la CinturaRESUMEN
OBJECTIVE: Some eating behaviors are associated with negative nutrition-related outcomes in adults, but research is lacking in adolescent samples. The current study examined whether dietary restraint moderates the relationship between disinhibition and weight outcomes and overall diet quality in a community sample of 16-year old adolescents. METHODS: Participants were recruited from a longitudinal study examining self-regulation and cardiometabolic risk. Data for this cross-sectional study were collected from questionnaires and laboratory visits when participants were approximately 16 years old (n = 178). Disinhibition and restraint were assessed using two subscales of the Three-Factor Eating Questionnaire. Diet quality was determined using Healthy Eating Index-2010 (HEI-2010) scores that were calculated using dietary data from 24-h dietary recalls. Two separate hierarchical linear regression analyses tested whether restraint moderated the associations of disinhibition with BMI-for-age percentile and HEI-2010 scores. RESULTS: After adjusting for covariates, restraint moderated the association between disinhibition and HEI-2010 scores (ß = -0.21, p = 0.03). There was a main effect for disinhibition on BMI-for-age percentiles (ß = 0.58, p = 0.02), but this relationship was not moderated by the level of restraint. CONCLUSIONS: The relationship between disinhibition and overall diet quality differed among adolescents according to level of dietary restraint. Although disinhibition independently predicted weight status, the level of restraint had no influence on this association. Future studies should examine restraint in relation to energy intake and weight concerns to better understand how it influences weight and dietary outcomes in this population.
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Índice de Masa Corporal , Dieta/psicología , Conducta Alimentaria/psicología , Adolescente , Estudios Transversales , Femenino , Humanos , Estudios Longitudinales , MasculinoRESUMEN
The prevalence of obesity among U.S. youth continues to increase, with many adolescents engaging in unhealthy eating behaviors. Increasingly, research points to the role of self-regulation in obesity development, yet existing work has largely focused on young children and/or clinical adult populations. This multi-method longitudinal study (N = 153) utilized a path analysis to delineate links between emotion regulation (age 15), emotional eating and dietary restraint (age 16), and adiposity (% body fat) using a BodPod for body composition assessment (age 19). Emotion regulation was negatively associated with emotional eating (ß = -0.30, p < 0.001) and positively associated with dietary restraint (ß = 0.15, p < 0.05) at age 16, but was not associated with age 19 adiposity (ß = -0.01, p = ns). Emotional eating was positively associated with adiposity (ß = 0.24, p < 0.01). Indirect effects suggested that emotional eating, but not dietary restraint, at age 16 serves as a mechanism that helps explain the associations between emotion regulation and adiposity four years later. Results from this study suggest that both emotion regulation and emotional eating represent promising targets for that should be included in future interventions aimed at preventing adolescent obesity.
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Adiposidad , Emociones , Conducta Alimentaria , Adolescente , Peso Corporal , Niño , Preescolar , Estudios de Cohortes , Ingestión de Alimentos , Femenino , Humanos , Estudios Longitudinales , Masculino , Obesidad Infantil , Factores de RiesgoRESUMEN
Mercury is a global pollutant released into the biosphere by varied human activities including coal combustion, mining, artisanal gold mining, cement production, and chemical production. Once released to air, land and water, the addition of carbon atoms to mercury by bacteria results in the production of methylmercury, the toxic form that bioaccumulates in aquatic and terrestrial food chains resulting in elevated exposure to humans and wildlife. Global recognition of the mercury contamination problem has resulted in the Minamata Convention on Mercury, which came into force in 2017. The treaty aims to protect human health and the environment from human-generated releases of mercury curtailing its movement and transformations in the biosphere. Coincident with the treaty's coming into force, the 13th International Conference of Mercury as a Global Pollutant (ICMGP-13) was held in Providence, Rhode Island USA. At ICMGP-13, cutting edge research was summarized and presented to address questions relating to global and regional sources and cycling of mercury, how that mercury is methylated, the effects of mercury exposure on humans and wildlife, and the science needed for successful implementation of the Minamata Convention. Human activities have the potential to enhance mercury methylation by remobilizing previously released mercury, and increasing methylation efficiency. This synthesis concluded that many of the most important factors influencing the fate and effects of mercury and its more toxic form, methylmercury, stem from environmental changes that are much broader in scope than mercury releases alone. Alterations of mercury cycling, methylmercury bioavailability and trophic transfer due to climate and land use changes remain critical uncertainties in effective implementation of the Minamata Convention. In the face of these uncertainties, important policy and management actions are needed over the short-term to support the control of mercury releases to land, water and air. These include adequate monitoring and communication on risk from exposure to various forms of inorganic mercury as well as methylmercury from fish and rice consumption. Successful management of global and local mercury pollution will require integration of mercury research and policy in a changing world.
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Contaminantes Ambientales , Mercurio , Compuestos de Metilmercurio , Animales , Contaminación Ambiental , Humanos , Rhode IslandRESUMEN
We examined longitudinal associations across an 8-year time span between overcontrolling parenting during toddlerhood, self-regulation during early childhood, and social, emotional, and academic adjustment in preadolescence (N = 422). Overcontrolling parenting, emotion regulation (ER), and inhibitory control (IC) were observed in the laboratory; preadolescent adjustment was teacher-reported and child self-reported. Results from path analysis indicated that overcontrolling parenting at age 2 was associated negatively with ER and IC at age 5, which, in turn, were associated with more child-reported emotional and school problems, fewer teacher-reported social skills, and less teacher-reported academic productivity at age 10. These effects held even when controlling for prior levels of adjustment at age 5, suggesting that ER and IC in early childhood may be associated with increases and decreases in social, emotional, and academic functioning from childhood to preadolescence. Finally, indirect effects from overcontrolling parenting at age 2 to preadolescent outcomes at age 10 were significant, both through IC and ER at age 5. These results support the notion that parenting during toddlerhood is associated with child adjustment into adolescence through its relation with early developing self-regulatory skills. (PsycINFO Database Record
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Conducta Infantil/psicología , Responsabilidad Parental/psicología , Autocontrol/psicología , Ajuste Social , Éxito Académico , Niño , Preescolar , Inteligencia Emocional , Función Ejecutiva , Femenino , Humanos , Inhibición Psicológica , Estudios Longitudinales , Masculino , Habilidades SocialesRESUMEN
The Minamata Convention on Mercury, with its objective to protect human health and the environment from the dangers of mercury (Hg), entered into force in 2017. The Convention outlines a life-cycle approach to the production, use, emissions, releases, handling, and disposal of Hg. As it moves into the implementation phase, scientific work and information are critically needed to support decision-making and management. This paper synthesizes existing knowledge and examines three areas in which researchers across the natural sciences, engineering, and social sciences can mobilize and disseminate knowledge in support of Hg abatement and the realization of the Convention's objective: (1) uses, emissions, and releases; (2) support, awareness raising, and education; and (3) impacts and effectiveness. The paper ends with a discussion of the future of Hg science and policy.
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Política Ambiental , Contaminación Ambiental/prevención & control , Mercurio , HumanosRESUMEN
Obesity and cardiovascular disease (CVD) risk are public health concerns in adolescents, yet few studies have examined the association of their diet to CVD risk factors. This study investigated associations between diet, body mass index (BMI), waist circumference (WC), blood pressure (BP), and blood lipids in 163 16-17 year olds. Diet recall data were converted into Healthy Eating Index-2010 (HEI) to assess diet quality. Differences in diet between groups with normal or obese BMI, normal or hypertensive BP, and normal or altered lipids were determined. Associations between diet and BMI, WC, BP, and lipids, controlling for race, gender, and socioeconomic status, were examined. Mean HEI was 49.2 (±12.0), with no differences observed between groups. HEI was not associated with any CVD risk. Sweetened beverage consumption was higher in obese adolescents, and positively related to total cholesterol (TC). Fruit intake was negatively related to BMI and diastolic BP. Total vegetable intake was negatively related to systolic BP. Greens and beans were negatively related to TC and LDL. Whole grains were negatively related to HDL. This research suggests a cardioprotective effect of diets rich in fruits and vegetables, as well as low in sweetened beverages in adolescents.