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BACKGROUND: Food insecurity (FI) remains a global public health problem. FI is more prevalent in low-and middle-income countries than high-income countries. FI is related with worse cognitive outcomes including cognitive function, cognitive decline, and cognitive impairment. Few studies have sought to identify how patterns of FI relate with cognitive function in old age and the potential mechanisms underlying this association. METHODS: Data from the 2015 and 2018 waves of the Mexican Health and Aging Study (n = 9,654, age 50+) were used in this study. Reports of FI in 2015 and 2018 were combined to create four patterns of FI groups: "persistently food secure", "became food secure", "became food insecure", and "persistently food insecure". Linear regression was used to estimate associations between patterns of FI and cognitive task performance. The mediating roles of depressive symptoms, body mass index, and chronic conditions were tested using Karlson, Holm, and Breen methodology. RESULTS: Approximately half of the sample were persistently food secure, 17% became food secure, 14% became FI, and 15% experienced persistent FI. When adjusting for demographic/socioeconomic confounders, persistent FI related with worse Verbal Learning, Verbal Recall, Visual Scanning, and Verbal Fluency performance compared to the persistently food secure. Becoming FI related with worse Verbal Learning, Visual Scanning, and Verbal Fluency. Mediation analyses provided support for depressive symptoms mediating associations between FI and poorer cognition, where 48% of the association between persistent FI and worse Verbal Recall performance was attributed to higher depressive symptoms. Becoming food secure was not associated with cognitive performance compared to the persistently food secure. CONCLUSIONS: FI may represent an important modifiable risk factor for poorer cognitive outcomes among older adults. Public health efforts should focus on providing stable food access to older adults, especially those living in poverty.
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Cognição , Abastecimento de Alimentos , Humanos , Idoso , Pobreza , Fatores de Risco , Insegurança AlimentarRESUMO
Education is protective against cognitive impairment. We used nationally representative data from Mexico and Brazil to assess the association between education and cognitive function. The sample included adults ≥ 50 years from the Brazilian Longitudinal Study of Aging (ELSI) and the Mexican Health and Aging Study (MHAS). Participants were classified as cognitively impaired or not impaired. We used logistic regression models to estimate the association between education and cognitive function. Education level was higher in MHAS than in ELSI. Participants with at least 1 year of education were less likely to have cognitive impairment than those with no formal education in both cohorts. Men in ELSI had higher odds for cognitive impairment compared to men in MHAS. In both cohorts, higher educational level was associated with lower odds of cognitive impairment compared to no formal education. Sex was an effect modifier in MHAS but not in ELSI. HIGHLIGHTS: Cognitive test batteries were harmonized using a regression-based approach.Even very low levels of education were associated with reduced odds of cognitive impairment compared to no formal education.Brazilians were more likely to have cognitive impairment than Mexicans given the same education level.The differences in the association of education with cognition between Brazil and Mexico were only observed among men.
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Objetivo Estimar a prevalência da coocorrência do uso abusivo de álcool e alimentação não saudável em adultos brasileiros e verificar sua relação com o consumo alimentar, segundo o sexo. Métodos Estudo com dados do inquérito telefônico Vigitel, 2016. Considerou-se uso abusivo de álcool: ingestão ≥5 doses/homens e ≥4/mulheres em uma única ocasião, pelo menos uma vez no último mês. Alimentação não saudável foi caracterizada a partir de um indicador composto por oito alimentos. Foram usados os testes Qui-quadrado de Pearson e Wald, com nível de significância de 5%, e razões de chances ajustadas com regressão logística. Resultados A coocorrência dos fatores de risco (24,7% vs. 10,0%) foi superior nos homens, nos indivíduos com melhor escolaridade, sem cônjuge, com plano de saúde, nas mulheres que se declararam pretas, e foi menor nos adultos (40-59 anos) e idosos. A coocorrência associou-se com menores chances de consumo de hortaliças cruas e cozidas, frutas, suco, leite e frango (≥5 dias/semana), e com maiores chances de consumo de carne vermelha, refrigerante (≥3 dias/semana) e carnes com excesso de gordura. Conclusão Os resultados mostram os prejuízos da coocorrência do uso excessivo de álcool e alimentação inadequada sobre os padrões alimentares da população adulta.
Objective To estimate the prevalence of co-occurrence of alcohol abuse and unhealthy eating in Brazilian adults and to verify its relationship with food intake, according to sex. Methods Study with data from Vigitel telephone survey, 2016. Alcohol abuse was considered as: ingestion ≥5 doses/men and ≥4 doses/women on a single occasion, at least once in the last month. Unhealthy eating was characterized from an indicator consisting of eight foods. Pearson's chi-square and Wald tests were used, with a 5% significance level, and adjusted odds ratios with logistic regression. Results The co-occurrence of risk factors (24.7% vs. 10.0%) was higher in men, in individuals with better education, without a spouse, with health insurance, in women who declared themselves black, and was lower in adults (40-59 years) and the elderly. The co-occurrence was associated with lower odds of consumption of raw and cooked vegetables, fruits, juice, milk, and chicken (≥5 days/week) and with higher odds of consumption of red meat, soda (≥3 days/week), and meats with excess fat. Conclusion The results show the harms of the co-occurrence of excessive alcohol use and inadequate diet on the dietary patterns of the adult population.
Objetivo Estimar la prevalencia de la coocurrencia de abuso de alcohol y alimentación no saludable en adultos brasileños y verificar su relación con el consumo de alimentos según el sexo. Métodos Estudio con datos de la encuesta telefónica Vigitel, 2016. Se consideró abuso de alcohol: ingestión ≥5 dosis para hombres y ≥4 para mujeres en una única ocasión, al menos una vez en el último mes. La alimentación poco saludable se caracterizó a partir de un indicador compuesto por ocho alimentos. Se utilizaron las pruebas de chi-cuadrado de Pearson y de Wfeld, con un nivel de significación del 5% y las odds ratio (OR) ajustadas con regresión logística. Resultados La coocurrencia de factores de riesgo (24,7% vs. 10,0%) fue mayor en los hombres, en los individuos con mayor educación, sin cónyuge, con seguro médico y en las mujeres que se declararon negras, y fue menor en los adultos (40-59 años) y los ancianos. La coocurrencia se asoció con menores probabilidades de consumo de verduras crudas y cocidas, frutas, zumos, leche y pollo (≥5 días/semana) y con mayores probabilidades de consumo de carne roja, refrescos (≥3 días/semana) y carnes con exceso de grasa. Conclusión Los resultados muestran el daño de la coexistencia del consumo excesivo de alcohol y la dieta inadecuada en los patrones dietéticos de la población adulta.
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Non-response of cognitive data in cohort studies is a barrier to cognitive aging research. We describe the procedures for the imputation of non-responses for cognitive data in the Mexican Health and Aging Study (MHAS). Data came from the 2001-2015 MHAS waves. We also describe the association of cognition with education, age, and other variables in 2015 with and without the imputed values. Between 12.3% and 37.9% of participants were missing data for at least one cognition variable. When we conducted the analysis with and without the imputed values, the relationships between education, age, and cognition were similar in direction and significance, but different in magnitude. Non-response of cognitive data is common and non-random in the MHAS. Investigators should use the data sets that include the imputed values, which are publicly available.
La no-respuesta en datos de cognición en estudios poblacionales dificulta la realización de investigaciones del envejecimiento cognitivo. Describimos procedimientos para imputarla en la Encuesta Nacional sobre Salud y Envejecimiento en México (ENASEM) del Instituto Nacional de Estadística y Geografía usando datos de las rondas 2001 a 2015. También, describimos la asociación de cognición con años de educación, edad y otras variables en el 2015, incluyendo y excluyendo los valores imputados. Entre 12.3 y 37.9% de los participantes tenían datos faltantes en una o más variables cognitivas. Tras comparar los análisis con y sin los valores imputados, las relaciones entre educación, edad y cognición fueron similares en dirección y significancia, pero diferentes en magnitud. Puesto que la no-respuesta en variables de cognición es común y no-aleatoria en la ENASEM, sugerimos que los investigadores usen las bases de datos con los valores imputados, las cuales se encuentran a disposición de los usuarios.
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Sources of health disparities such as educational attainment, cardiovascular risk factors, and access to health care affect cognitive impairment among older adults. To examine the extent to which these counteracting changes affect cognitive aging over time among Mexican older adults, we examine how sociodemographic factors, cardiovascular diseases, and their treatment relate to changes in cognitive function of Mexican adults aged 60 and older between 2001 and 2015. Self and proxy respondents were classified as dementia, cognitive impairment no dementia (CIND), and normal cognition. We use logistic regression models to examine the trends in dementia and CIND for men and women aged 60 years or older using pooled national samples of 6822 individuals in 2001 and 10,219 in 2015, and sociodemographic and health variables as covariates. We found higher likelihood of dementia and a lower risk of CIND in 2015 compared to 2001. These results remain after adjusting for sociodemographic factors, cardiovascular diseases, and their treatment. The improvements in educational attainment, treatment of diabetes and hypertension, and better access to health care in 2015 compared to 2001 may not have been enough to counteract the combined effects of aging, rural residence disadvantage, and higher risks of cardiovascular disease among older Mexican adults.
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Few studies assess the malnutrition risk of older Mexican adults because most studies do not assess nutritional status. This study proposes a modified version of the Mini Nutritional Assessment (MNA) to assess the risk of malnutrition among older Mexicans adults in the Mexican Health and Aging Study (MHAS). Data comes from the 2012, 2015, and 2018 waves of the MHAS, a nationally representative study of Mexicans aged 50 and older. The sample included 13,338 participants and a subsample of 1911 with biomarker values. ROC analysis was used to calculate the cut point for malnutrition risk. This cut point was compared to the definition of malnutrition from the ESPEN criteria, BMI, low hemoglobin, or low cholesterol. Logistic regression was used to assess predictors of malnutrition risk. A score of 10 was the optimal cut point for malnutrition risk in the modified MNA. This cut point had high concordance to identify malnutrition risk compared to the ESPEN criteria (97.7%) and had moderate concordance compared to BMI only (78.6%), and the biomarkers of low hemoglobin (56.1%) and low cholesterol (54.1%). Women, those older than 70, those with Seguro Popular health insurance, and those with fair/poor health were more likely to be malnourished. The modified MNA is an important tool to assess malnutrition risk in future studies using MHAS data.
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Desnutrição/etiologia , Fatores Etários , Idoso/estatística & dados numéricos , Índice de Massa Corporal , Colesterol/sangue , Feminino , Hemoglobinas/análise , Humanos , Modelos Logísticos , Masculino , México/epidemiologia , Pessoa de Meia-Idade , Avaliação Nutricional , Fatores de RiscoRESUMO
OBJECTIVES: Increased social engagement in older adults has been linked to positive cognitive outcomes; however, it is unclear if the social engagement of husbands and wives influences their own cognition as well as each other's cognition. Moreover, it is unknown if any such patterns persist in different country contexts. METHODS: Data from the 2001 Mexican Health and Aging Study (MHAS) and the 2000 Health and Retirement Study (HRS) were combined, and comparable samples of married couples without cognitive impairment at baseline were drawn. Follow-up cognition data was obtained from the 2012 MHAS and the 2012 HRS. Structural equation models (SEM) were used to test the actor-partner interdependence model with moderating effect of country on the association of social engagement with cognition. RESULTS: Significant actor effects were observed for wives in both countries. Actor effects for husbands were observed in the United States only. In Mexico, a significant partner effect was observed where wives' social engagement benefited their own cognition as well as their husbands', but not vice versa. Partner effects were not observed in the United States. No moderation effects of country were observed. DISCUSSION: Our results suggest asymmetric patterns of actor-partner interdependence in Mexico, which may be reflective of the more traditional social role of women, and codependence within the couple. On the other hand, our results for the United States, where each spouse had significant actor effects but no partner effects, may suggest more independence within the couple.
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Cognição , Estado Civil , Participação Social , Idoso , Envelhecimento Cognitivo/psicologia , Comparação Transcultural , Nível de Saúde , Humanos , Estudos Longitudinais , México , Pessoa de Meia-Idade , Participação Social/psicologia , Cônjuges/psicologia , Cônjuges/estatística & dados numéricos , Inquéritos e Questionários , Estados UnidosRESUMO
OBJECTIVES: To study the impact of diabetes on the long-term cognitive trajectories of older adults in 2 countries with different socioeconomic and health settings, and to determine whether this relationship differs by cognitive domains. This study uses Mexico and the United States to confirm if patterns hold in both populations, as these countries have similar diabetes prevalence but different socioeconomic conditions and diabetes-related mortality. METHODS: Two nationally representative cohorts of adults aged 50 years or older are used: the Mexican Health and Aging Study for Mexico and the Health and Retirement Study for the United States, with sample sizes of 18,810 and 26,244 individuals, respectively, followed up for a period of 14 years. The outcome is cognition measured as a total composite score and by domain (memory and nonmemory). Mixed-effect linear models are used to test the effect of diabetes on cognition at 65 years old and over time in each country. RESULTS: Diabetes is associated with lower cognition and nonmemory scores at baseline and over time in both countries. In Mexico, diabetes only predicts lower memory scores over time, whereas in the United States it only predicts lower memory scores at baseline. Women have higher total cognition and memory scores than men in both studies. The magnitude of the effect of diabetes on cognition is similar in both countries. DISCUSSION: Despite the overall lower cognition in Mexico and different socioeconomic characteristics, the impact of diabetes on cognitive decline and the main risk and protective factors for poor cognition are similar in both countries.
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Envelhecimento Cognitivo , Disfunção Cognitiva , Diabetes Mellitus , Fatores Socioeconômicos , Cognição , Envelhecimento Cognitivo/fisiologia , Envelhecimento Cognitivo/psicologia , Disfunção Cognitiva/diagnóstico , Disfunção Cognitiva/epidemiologia , Disfunção Cognitiva/fisiopatologia , Comparação Transcultural , Diabetes Mellitus/diagnóstico , Diabetes Mellitus/mortalidade , Diabetes Mellitus/psicologia , Feminino , Humanos , Estudos Longitudinais , Masculino , Testes de Memória e Aprendizagem , México/epidemiologia , Pessoa de Meia-Idade , Prevalência , Fatores de Proteção , Fatores de Risco , Estados Unidos/epidemiologiaRESUMO
Objectives: Examine differences in health care utilization and out-of-pocket (OOP) expenditures among older Mexican adults in 2001 and 2012, and identify individual characteristics associated with utilization and expenditures in both years. Method: Data from the 2001 and 2012 cross-sections of the Mexican Health and Aging Study were utilized. Outcomes included nights spent in the hospital, medical/outpatient procedures, and OOP expenditures with these services. Covariates included demographics and comorbidities. Two-part regression models were used to identify covariates associated with utilization and expenditures in each year. Results: The proportion of those who spent at least one night in the hospital or had at least one medical/outpatient visit was higher in 2012 than in 2001, while the proportion of individuals with OOP expenditures decreased between the years. Those with more comorbidities had the highest OOP expenditures in both years. Discussion: Although the population paying for health care services OOP was lower in 2012, there is persistent inequality in expenditures across population groups.
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Gastos em Saúde/tendências , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Idoso , Envelhecimento , Estudos Transversais , Feminino , Inquéritos Epidemiológicos , Humanos , Masculino , México/epidemiologia , Pessoa de Meia-IdadeRESUMO
BACKGROUND: Vitamin D is essential for maintaining bone mineralization and calcium homeostasis, and prevents falls and fractures in older adults. Mexico is undergoing an epidemiologic and demographic transition with increasing obesity rates. The study's aim was to determine the association of obesity with serum 25-hydroxyvitamin D [25(OH)D] concentrations in older Mexican adults. METHODS: Data from 1772 Mexicans, aged ≥50 years, enrolled in a sub-sample of the 3rd wave of the Mexican Health and Aging Study, were included. Serum 25(OH)D concentrations were used to define vitamin D status, and were categorized into tertiles. Body mass index measures were used to categorize older adults into under/normal weight, overweight, and obese groups. Multinomial logistic regression models were used to assess the relationship, adjusting for potential confounders. RESULTS: Approximately 40% and 37% of older Mexican adults were either overweight or obese, respectively. Compared to under/normal weight older Mexicans, obese adults were 1.78 times (95% Confidence Interval (CI) 1.27-2.48) and 1.94 times (95% CI 1.40-2.68) more associated with the first and second tertile concentrations of serum 25(OH)D, respectively. Overweight adults were 1.52 times (95% CI 1.12-2.06) more associated with the second tertile of serum 25(OH)D concentration than under/normal weight adults. CONCLUSION: Overweight/Obesity was found to be significantly associated with low concentrations of serum 25(OH) in older Mexican adults.