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Exploratory analysis of the association between stature, obesity, and food insecurity in adults of the National Dietary Survey 2017-2018

Análise exploratória da associação entre estatura, obesidade e insegurança alimentar em adultos no Inquérito Nacional de Alimentação 2017-2018

ABSTRACT

Objective

Evaluate short stature as a possible explanation for obesity, and identify if consumption of energy, protein, carbohydrate, and lipids were associated to higher risk for obesity in Brazilian adults (20-59 y) living in household food insecurity.

Methods

Cross-sectional study from 2017/2018 Household Budget Survey (N=28,112). Food insecurity was measured with the Brazilian Household Food Insecurity Measurement Scale. Short stature was used as an indicator of malnutrition at the beginning of life, which characterizes metabolic alterations resulting from the presence of food insecurity (cuts off women ≤149cm; men ≤160cm). Body mass index (kg/m2) was estimated from self-reported weight and body height. The average food intake was estimated from a 24-hr recall. The weighted means and standard error of the food security/insecurity categories were assessed according to height, mean energy intake and protein(g), carbohydrate(g) and lipids(g) intake, stratified by gender and nutritional status.

Results

Both men and women with obesity and food insecurity had significantly lower average height in comparison with those in food security status (p-value <0.01). The prevalence of obesity 1 (BMI 30-34.9kg/m2) increased significantly with the food insecurity among women. There was a trend towards short stature among obese women from families with food insecurity, as well as lower intake of energy. Among both men and women, the lowest intakes of protein and the highest intake of carbohydrates were observed in the underweight group (BMI <18.5kg/m2).

Conclusion

In women, the risk of obesity may depend on the metabolic background, since who presents food insecurity and develop obesity have low stature and lower energy intake.

Keywords:
Adult; Body height; Body mass index; Brazil; Food insecurity; Obesity

RESUMO

Objetivo

Avaliar a baixa estatura como possível explicação para a obesidade, e identificar se o consumo de energia, proteína, carboidrato e lipídios esteve associado ao maior risco de obesidade em adultos brasileiros (20-59 anos) que vivem em domicílios em insegurança alimentar domiciliar.

Métodos

Estudo transversal realizado com dados da Pesquisa de Orçamentos Familiares 2017/2018 (N=28.112). A Insegurança alimentar domiciliar foi medida pela Escala Brasileira de Insegurança Alimentar. A baixa estatura (mulheres ≤149cm; homens ≤160cm) foi utilizada como indicador de alterações metabólicas decorrentes da presença de insegurança alimentar. O índice de massa corporal (kg/m2) foi estimado a partir do peso e altura autorreferidos. A média de ingestão alimentar foi estimada a partir do recordatório de 24 horas. As médias ponderadas e o erro padrão das categorias de segurança/insegurança alimentar foram avaliadas segundo estatura, médias de ingestão energéticas e de proteínas(g), carboidratos(g) e lipídios(g), estratificado por sexo e estado nutricional.

Resultados

Homens e mulheres com obesidade e insegurança alimentar apresentaram a média de estatura significativamente menor em comparação aqueles com segurança alimentar (p-valor <0,01). A prevalência de obesidade 1 (índice de massa corporal 30-34,9Kg/m2) aumentou significativamente com a insegurança alimentar entre as mulheres. Houve tendência de baixa estatura entre mulheres obesas de famílias com insegurança alimentar, bem como menor ingestão de energia. Entre homens e mulheres, a menor ingestão de proteína e a maior ingestão de carboidratos foram observadas no grupo de baixo peso (índice de massa corporal <18,5Kg/m2).

Conclusão

Nas mulheres, o risco de obesidade pode depender do metabolismo, pois quem apresenta insegurança alimentar e desenvolve obesidade possui baixa estatura e menor ingestão energética.

Palavras-chave:
Adulto; Estatura; Índice de massa corporal; Brasil; Insegurança alimentar; Obesidade

INTRODUCTION

In Brazil, data from the last National Health Survey showed the presence of high rates of obesity in the adult population (25.9%), with a higher prevalence of obesity among women (29,5%) than among men (21.8%) [11. Brazilian Institute of Geography and Statistics. National health survey - 2019: Primary health care and anthropometric information [Internet]. Rio de Janeiro: IBGE, 2020[cited 2023 Apr 8]. Available from: https://www.pns.icict.fiocruz.br/volumes-ibge/
https://www.pns.icict.fiocruz.br/volumes...
]. Additionally, studies demonstrate the increase of overweight and obesity in low-income populations [22. Templin T, Cravo OHT, Thomson B, Dieleman J, Bendavid E. The overweight and obesity transition from the wealthy to the poor in low- and middle-income countries: A survey of household data from 103 countries. Plos Med. 2019;16(11):e1002968. https://doi.org/10.1371/journal.pmed.1002968
https://doi.org/10.1371/journal.pmed.100...
], and among those living in household with Food Insecurity (FI) in Brazil [33. Domingos TB, Sichieri R, Salles-Costa R. Sex differences in the relationship between food insecurity and weight status in Brazil. Br J Nutr. 2022;1-19. https://doi.org/10.1017/S0007114522001192
https://doi.org/10.1017/S000711452200119...
,44. Gubert MB, Spaniol AM, Segall-Corrêa AM, Pérez-Escamilla R. Understanding the double burden of malnutrition in food insecure households in Brazil. Matern Child Nutr. 2017;13(3): e12347. https://doi.org/10.1111/mcn.12347
https://doi.org/10.1111/mcn.12347...
].

The FI is defined as the lack of access to a sufficient nutritious food [55. Maitra C. A Review of Studies Examining the Link Between Food Insecurity and Malnutrition. Technical Paper [Internet]. Rome: FAO, 2018[cited 2023 Apr 8]. Available from: https://www.fao.org/3/CA1447EN/ca1447en.pdf
https://www.fao.org/3/CA1447EN/ca1447en....
]. A direct estimative of FI reflects collective and individual hunger experiences, concern, or deprivation access to sufficient and quality food to maintain a healthy life, related to poor quality of the diet [66. Palmeira PA, Laurentino JSL, Cherol CCS, Salles-Costa R. Changes in the frequency of food consumption by adults/elderly according to food insecurity: Evidence from a longitudinal study in the northeastern semi-arid region, Brazil, 2011-2014. Rev Nutr. 2023;36:e220179. https://doi.org/10.1590/1678-9865202336e220179
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,7 7. Berkowitz SA, Gao X, Tucker KL. Food-insecure dietary patterns are associated with poor longitudinal glycemic control in diabetes: Results from the Boston Puerto Rican Health study. Diabetes Care. 2014;37(9):2587-92. https://doi.org/10.2337/dc14-0753
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].

The FI is one of the most serious social and public health challenges to be faced [8 8. Food and Agriculture Organization. The State of Food Security and Nutrition in the World 2023.Urbanization, agrifood systems transformation and healthy diets across the rural-urban continuum [Internet]. Rome: FAO, 2023[cited 2023 Apr 8]. Available from: https://www.fao.org/documents/card/en/c/cc3017en
https://www.fao.org/documents/card/en/c/...
]. In Brazil, according to the II Inquérito Nacional sobre Insegurança Alimentar no Contexto da Pandemia da COVID-19 no Brasil (VIGISAN, II National Survey on Food Insecurity in the Context of the COVID-19 Pandemic in Brazil) 125 million Brazilian men and women are living in an FI condition, with 33 million people experiencing hunger [99. Rede Brasileira de Pesquisa em Soberania e Segurança Alimentar e Nutricional. II VIGISAN National Survey on Food Insecurity in the Context of the Covid-19 Pandemic in Brazil [Internet]. Brasília: RBPSSAN; 2022 [cited 2023 Apr 10]. Available from: https://olheparaafome.com.br/
https://olheparaafome.com.br/...
]. Impacts being more felt according to markers of gender, race and ethnicity, income, education, regional and territorial contexts [1010. Rede Brasileira de Pesquisa em Soberania e Segurança Alimentar e Nutricional. II VIGISAN National Survey on Food Insecurity in the Context of the Covid-19 Pandemic in Brazil. Supplement II [Internet]. Brasília: RBPSSAN; 2023 [cited 2023 Apr 13]. Available from: https://olheparaafome.com.br/
https://olheparaafome.com.br/...
,1111. Salles-Costa R, Segall-Corrêa AM, Alexandre-Weiss VP, Pasquim EM, Paula NM, Lignani JB, et al. Rise and fall of household food security in Brazil, 2004 to 2022. Cad Saude Publica. 2023;39(1):e00191122. https://doi.org/10.1590/0102-311XEN1911222
https://doi.org/10.1590/0102-311XEN19112...
].

The FI is, therefore, considered an important public health problem due to the link between undernutrition and obesity [1212. Food and Agriculture Organization. Regional Overview of Food Security and Nutrition - Latin America and the Caribbean 2022: towards improving affordability of healthy diets [Internet]. Santiago: FAO; 2023 [cited 2023 Apr 13]. Available from: https://doi.org/10.4060/cc3859en
https://doi.org/10.4060/cc3859en...
]. Some research reinforced that children living in households with severe levels of FI were more propensity of adverse effects on the health [1313. Pereira A, Handa S, Holmqvist G. Estimating the prevalence of food insecurity of households with children under 15 years, across the globe. Glob Food Sec. 2021;28:100482. https://doi.org/10.1016/j.gfs.2020.100482
https://doi.org/10.1016/j.gfs.2020.10048...
]. This is done due to the importance of adequate nutrition in the growth and development of early childhood, whether by offering energy or nutrients, a fact that does not occur in families that live with hunger and that has violated the human right to adequate food [1414. Storr HL, Freer J, Child J, Davies JH. Assessment of childhood short stature: A GP guide. Br J Gen Pract. 2023;73(729):184-6. https://doi.org/10.3399/bjgp23X732525
https://doi.org/10.3399/bjgp23X732525...
].

Undernutrition early in life may increase the risk of obesity, and short stature is a marker of inadequate development in the first years of life [1515. Alderman H, Behrman JR, Glewwe P, Fernald L, Walker S. Evidence of Impact of Interventions on Growth and Development during Early and Middle Childhood. In: Bundy DAP, Silva ND, Horton S, Jamison DT, Patton GC. Child and Adolescent Health and Development. Washington: The International Bank for Reconstruction and Development / The World Bank; 2017. p. 79-98.-1717. Davies JH, Child J, Freer J, Storr HL. Inequalities in the assessment of childhood short stature. Br J Gen Pract. 2023;73(729):150-1. https://doi.org/10.3399/bjgp23X7323099
https://doi.org/10.3399/bjgp23X7323099 ...
]. Stature acts as a proxy for metabolic capacity [1818. Wells JC, Chomtho S, Fewtrell MS. Programming of body composition by early growth and nutrition. Proc Nutr Soc. 2007;66(3),423-34. https://doi.org/10.1017/S00296651070056911
https://doi.org/10.1017/S002966510700569...
]. The intergenerational growth cycle, where children who suffered pregnancy malnutrition and/or in early childhood tend to have a shorter stature in adulthood, in other words, the malnutrition process can perpetuate [1919. Blankenship JL, Gwavuya S, Palaniappan U, Alfred J, deBrum F, Erasmus W. High double burden of child stunting and maternal overweight in the Republic of the Marshall Islands. Matern Child Nutr. 2020;16(2):e12832. https://doi.org/10.1111/mcn.12832
https://doi.org/10.1111/mcn.12832...
].

Early malnutrition reduces energy requirements and nervous system changes that can facilitate fat accumulation [2020. Martins VJB, Florêncio TMMT, Grillo LP, Do Carmo MPF, Martins PA, Clemente AP, et al. Long-lasting effects of undernutrition. Int J Environ Res Public Health. 2011;8(6):1817-46. https://doi.org/10.3390/ijerph8061817
https://doi.org/10.3390/ijerph8061817...
,2121. Prentice A, Webb F. Obesity amidst poverty. Int J Epidemiol. 2006;35(1):24-30. https://doi.org/10.1093/ije/dyi2044
https://doi.org/10.1093/ije/dyi2044...
]. Said-Mohamed et al. [2222. Said-Mohamed R, Bernard JY, Ndzana A-C, Pasquet P. Is Overweight in stunted preschool children in Cameroon related to reductions in fat oxidation, resting energy expenditure and physical activity?Plos One. 2012;7(6):e39007. https://doi.org/10.1371/journal.pone.0039007
https://doi.org/10.1371/journal.pone.003...
] and Hoffman et al. [2323. Hoffman DJ, Sawaya AL, Verreschi I, Tucker KL, Roberts SB. Why are nutritionally stunted children at increased risk of obesity? Studies of metabolic rate and fat oxidation in shantytown children from São Paulo, Brazil. Am J Clin Nutr. 2000;72(3):702-7. https://doi.org/10.1093/ajcn/72.3.702
https://doi.org/10.1093/ajcn/72.3.702...
] indicate that individuals who suffered food deprivation in the first years of life had a reduction in the lipid oxidation rate, a risk factor for the accumulation of body fat, predisposing low body height individuals to obesity [2424. Florêncio TT, Ferreira HS, Cavalcante JC, Luciano SM, Sawaya AL. Food consumed does not account for the higher prevalence of obesity among stunted adults in a very-low-income population in the Northeast of Brazil (Maceió, Alagoas). Eur J Clin Nutr. 2003;57(11):1437-46. https://doi.org/10.1038/sj.ejcn.16017088
https://doi.org/10.1038/sj.ejcn.16017088...
].

In Brazil, the coexistence of short stature and high Body Mass Index (BMI) has been described [1616. Ferreira HDS, Luna AA, Florêncio TMMT, Assunção ML, Horta BL. Short stature is associated with overweight but not with high energy intake in low-income Quilombola women. Food Nutr Bull. 2017;38(2):216-25. https://doi.org/10.1177/0379572117699759
https://doi.org/10.1177/0379572117699759...
,2525. Sichieri R, Santos Barbosa F, Moura EC. Relationship between short stature and obesity in Brazil: a multilevel analysis. Br J Nutr . 2010;103(10):1534-38. https://doi.org/10.1017/S0007114509993448
https://doi.org/10.1017/S000711450999344...
], especially in women [22. Templin T, Cravo OHT, Thomson B, Dieleman J, Bendavid E. The overweight and obesity transition from the wealthy to the poor in low- and middle-income countries: A survey of household data from 103 countries. Plos Med. 2019;16(11):e1002968. https://doi.org/10.1371/journal.pmed.1002968
https://doi.org/10.1371/journal.pmed.100...
,2626. Silva EC, Martins IS, Araújo EAC. Síndrome metabólica e baixa estatura em adultos da região metropolitana de São Paulo (SP, Brasil). Cienc Saude Coletiva. 2011;16(2):663-8. https://doi.org/10.1590/S1413-81232011000200030
https://doi.org/10.1590/S1413-8123201100...
]. Prevalence of FI in the Brazilian population has been increasing since 2018 and its consequences related to the poverty and impacts on the health are still underexplored [1111. Salles-Costa R, Segall-Corrêa AM, Alexandre-Weiss VP, Pasquim EM, Paula NM, Lignani JB, et al. Rise and fall of household food security in Brazil, 2004 to 2022. Cad Saude Publica. 2023;39(1):e00191122. https://doi.org/10.1590/0102-311XEN1911222
https://doi.org/10.1590/0102-311XEN19112...
,2727. Salles-Costa R, Ferreira AA, Mattos RA, Reichenheim ME, Perez-Escamilla R, Lignani JB, et al. National trends and disparities in severe food insecurity in Brazil between 2004 and 2018. Curr Dev Nutr. 2022;6(4):nzac034. https://doi.org/10.1093/cdn/nzac034
https://doi.org/10.1093/cdn/nzac034...
]. The present study aimed to evaluate short stature as a possible explanation for obesity among adults living in FI households in Brazil, and identify if consumption of energy, protein, carbohydrate, and lipids was associated with a higher risk for obesity in this population.

METHODS

The present cross-sectional study was based on the National Dietary Survey (NDS), which was subsample of 2017-2018 Household Budget Survey by the Instituto Brasileiro de Geografia e Estatística (IBGE, Brazilian Office of Geography and Statistics) [2828. Instituto Brasileiro de Geografia e Estatística. Pesquisa de orçamentos familiares 2017-2018: primeiros resultados [Internet]. Rio de Janeiro: IBGE; 2019 [cited 2023 Apr 10]. Available from: https://biblioteca.ibge.gov.br/index.php/biblioteca-catalogo?view=detalhes&id=2101670
https://biblioteca.ibge.gov.br/index.php...
]. The study adopted a two-stage cluster sample design. In the first stage, census tracts were randomly selected; in the second stage, households were selected by simple random sampling within census tracts. Census tracts were grouped into household strata with geographical and socioeconomic homogeneity, and the number of tracts in each stratum was proportional to the number of households in the stratum. Household visits in each stratum were uniformly distributed throughout the 12 months to encompass seasonal food intake and prices variations. The sample represents five regions of the country (North, Northeast, Southeast, South, and Midwest), urban and rural areas, and different socioeconomic levels. The number of households selected was 20,112, and all individuals aged 10 years or older (46,164) were included in the dietary survey. This paper included only adults (20-59 years old) and excluded pregnant and lactating women. The final sample considered of 28,112 individuals (60.9% of the total sample).

For this research, data regarding body height, energy consumption, protein, carbohydrate, lipids, and nutritional status (BMI) were analyzed. The stature (m) was included as a ‘proxy’ for undernutrition early in life, being considered using the cutoff points described by Sichieri et al. [2525. Sichieri R, Santos Barbosa F, Moura EC. Relationship between short stature and obesity in Brazil: a multilevel analysis. Br J Nutr . 2010;103(10):1534-38. https://doi.org/10.1017/S0007114509993448
https://doi.org/10.1017/S000711450999344...
], were short stature ≤149cm for women and ≤160cm for men.

Dietary Assessment

Dietary data were collected using 24-h recalls. Trained interviewers met residents face-to-face and used portable computers for registration and data entry. The database was subjected to data quality control to assess the coherence of the information by trained technical staff. Further details of the sample design, the total number of Primary Sampling Unit (PSUs) interviewed by states, data quality control, and the imputation of variables are described in the IBGE official report [2828. Instituto Brasileiro de Geografia e Estatística. Pesquisa de orçamentos familiares 2017-2018: primeiros resultados [Internet]. Rio de Janeiro: IBGE; 2019 [cited 2023 Apr 10]. Available from: https://biblioteca.ibge.gov.br/index.php/biblioteca-catalogo?view=detalhes&id=2101670
https://biblioteca.ibge.gov.br/index.php...
].

The residents selected for the subsample of the Pesquisa de Orçamentos Familiares (POF) 2017-2018 who answered the personal food consumption block were asked, in personal interviews, about all the food and drinks (including water) consumed on the previous day in each of the two interviews. The interviews were carried out on non-consecutive days chosen during the week when the interviewer was at home to capture all the modules of the POF 2017-2018. In this study, the authors considered only the first day of the interviews. The computerized data entry program for food records contains a database (food and beverage record) of 1,832 items. If the interviewee cited any item that was not on the list, the research agent could include it. For specific items, details of the method of preparation were requested, given that the method of preparation can change the nutritional composition of the food.

For analysis of the amount and nutritional composition of the additions, the options of oil, butter/margarine, mayonnaise, cheese and cream were considered as fat-based. When reported, they could add a maximum of 20% of the consumption, in grams, of the food to which they were added. The additions of sugar, honey, molasses, ketchup, mustard, and soy sauce represented a maximum of 10% of the consumption of the item. That is, if ketchup and mustard were added to a sandwich, each addition represents 5% of the sandwich weight. For sweeteners, only the frequency of consumption was recorded. At the end of the registration, the research agents were instructed to review the report of food consumed with the interviewee.

Based on this information, the consumed amount of each food item was estimated based on the participant’s reports and by coding the quantities referred to in measures of mass and volume, based on standardized procedures as described by Bezerra et al. [2929. Bezerra IN, Cavalcante JB, Vasconcelos TM, Pereira RA, Yokoo EM, Sichieri R. Evolution of food intake estimates in Brazil: The 2008-2009 and 2017-2018 National Dietary Surveys. Rev Nutr. 2022;35:e210132. https://doi.org/10.1590/1678-9865202235e210132
https://doi.org/10.1590/1678-9865202235e...
].

In this study, food intake was assessed using means of energy (kcal), protein (g), carbohydrate (g), lipids (g), among men and women of food security and all categories of food insecurity by nutritional status, estimated from the first 24-hr recall. To estimate the mean intake of a population, only a single 24-hr recall is necessary in populations study [3030. Thompson FE, Kirkpatrick SI, Subar AF, Reedy J, Schap TRE, Wilson MM, et al. The National Cancer Institute's Dietary Assessment Primer: A resource for diet research. J Acad Nutr Diet. 2015;115(12):1986-95. https://doi.org/10.1016/j.jand.2015.08.016
https://doi.org/10.1016/j.jand.2015.08.0...
].

Nutritional Status

The participants body mass index (BMI, kg/m2) was calculated based on their self-reported weight and body height. Prior studies have established the reliability and validity of self-reported body height and weight data among in Brazil and in other countries [3131. Moreira NF, Luz VG, Moreira CC, Pereira RA, Sichieri R, Ferreira MG, et al. Self-reported weight and height are valid measures to determine weight status: Results from the Brazilian National Health Survey (PNS 2013). Cad Saude Publica. 2018;34(5):e00063917. https://doi.org/10.1590/0102-311X000639177
https://doi.org/10.1590/0102-311X0006391...
-3333. Qin B, Llanos AAM, Lin Y, Szamreta EA, Plascak JJ, Oh H, et al. Validity of self-reported weight, height, and body mass index among African American breast cancer survivors. J Cancer Surviv. 2018;12(4):460-8. https://doi.org/10.1007/s11764-018-0685-9
https://doi.org/10.1007/s11764-018-0685-...
].

Using the World Health Organization cutoff points [3434. World Health Organization. Physical status: The use of and interpretation of anthropometry, report of a WHO expert committee [Internet]. Rome: World Health Organization, 1995 [cited 2023 Apr 17]. Available from: https://apps.who.int/iris/handle/10665/3700
https://apps.who.int/iris/handle/10665/3...
], BMI was classified into the following categories: underweight (BMI <18.5kg/m2), normal weight (BMI 18.6-24.9kg/m2), overweight (BMI 25-29.9kg/m2), obesity grade 1 (BMI 30-34.9kg/m2), obesity grade 2 (BMI 35- 39.9kg/m2) and obesity grade 3 (BMI ≥40kg/m2).

Assessment of Household Food Insecurity

The Escala Brasileira de Insegurança Alimentar (EBIA, Brazilian Household Food Insecurity Measurement Scale) was used to classify households into the following mutually exclusive Food Security (FS) or FI categories using recommended cutoff point for households: FS (when the family/household has regular and permanent access to quality food at adequate amount); mild FI (concern or uncertainty about access to food in the future); moderate FI (quantitative reduction of food among adults and/or disruption in eating patterns resulting from a lack of food among adults); and severe FI (quantitative reduction of food among adults and among those under 18 years of age, that is, disruption in eating patterns resulting from a lack of food among all residents; in this situation, hunger becomes a lived experience at home) [3535. Segall-Corrêa AM, Marin-León L, Melgar-Quiñonez H, Pérez-Escamilla R. Refinement of the Brazilian Household Food Insecurity Measurement Scale: Recommendation for a 14-item EBIA. Rev Nutr. 2014;27(2):241-51. https://doi.org/10.1590/1415-52732014000200010
https://doi.org/10.1590/1415-52732014000...
]. The EBIA consists of 14 dichotomous questions (‘yes’ or ‘no’), including eight items that apply only to households with adults (19 years old or more) and six items that apply to households with children and/or adolescents [3535. Segall-Corrêa AM, Marin-León L, Melgar-Quiñonez H, Pérez-Escamilla R. Refinement of the Brazilian Household Food Insecurity Measurement Scale: Recommendation for a 14-item EBIA. Rev Nutr. 2014;27(2):241-51. https://doi.org/10.1590/1415-52732014000200010
https://doi.org/10.1590/1415-52732014000...
]. The scale was completed by the reference person in the family responsible for the purchasing and preparation of meals.

The analyses describe the population on sociodemographic characteristics, including information about self-reported sex (men; woman), age (20-29.9; 30-39.9; 40-49.9; 50-59.9), years of schooling (≤4, 5-8, ≥9) and geographical region (North, Northeast, Southeast, South, Midwest). These variables were selected and categorized based on a previous study using the same study population, which observed a significant relationship between education level and place of residence (geographical region and place of households) with overweight [33. Domingos TB, Sichieri R, Salles-Costa R. Sex differences in the relationship between food insecurity and weight status in Brazil. Br J Nutr. 2022;1-19. https://doi.org/10.1017/S0007114522001192
https://doi.org/10.1017/S000711452200119...
] and food intake [2525. Sichieri R, Santos Barbosa F, Moura EC. Relationship between short stature and obesity in Brazil: a multilevel analysis. Br J Nutr . 2010;103(10):1534-38. https://doi.org/10.1017/S0007114509993448
https://doi.org/10.1017/S000711450999344...
].

Weighted point prevalence and standard error were estimated for socioeconomic variables characteristics (stature, age, years of schooling, and geographical regions) using the χ2 test to compare the relationship according to FS/FI strata and nutritional status by sex. The expanded prevalence for nutritional status (underweight, normal weight, overweight and obesity) was also evaluated according to FS levels (mild FI, moderate FI, severe FI), stratified by sex. To assess whether there is a tendency for obesity to increase with increasing FI among men and women, we tested the tendency for increased prevalence in the FI categories (p-value of trend).

Further analysis was conducted to compare men and women of FS and all categories of FI. For this analysis, the FI categories were added (mild, moderate, and severe), being evaluated the weighted mean and Standard Error (SE) of stature, energy intake, and macronutrients intake (protein, carbohydrate, lipids) stratified by sex and nutritional status. The average consumption of macronutrients was related to the amount in grams ingested by the individuals. The percentage of intake that the mean in grams corresponded to the total calorie intake (%kcal) of the group was also analyzed.

Weighted estimates considered the complex sample design using ‘svy’ commands in Stata 16.

RESULTS

The prevalence of severe FI was highest among short-stature men, aged between 20 and 29.9 years old, with four or fewer years of education. Prevalence was also higher among those who lived in the North region of Brazil. The prevalence of severe FI was similar among men and women (15.8%). Regarding education, for both men and women, the lowest prevalence of FI, was among individuals who attended nine or more years of study. Southeast had the lowest prevalence of all forms of FI (Mild, Moderate and Severe), in both sex (Table 1).

Table 1 -
Sample size, prevalence of household food insecurity1 (%) according to sociodemographic characteristics and sex. National Dietary Survey (NDS). Brazil, 2017-2018.

Table 2 shows the prevalence of the nutritional status categories according to the FS/FI strata and sex. The weighted prevalence of underweight was lower than 6%, and increased with the severity household FI, for both men and women. The prevalence of obesity increased significantly with the severity household FI among women but not among men.

Table 2 -
Sample size, prevalence (%) and p-value of trend of underweight, overweight, obesity grade 1 and obesity grades 2+3, according to food security and food insecurity levels1 by sex. National Dietary Survey (NDS). Brazil, 2017-2018.

To further explore the sex differences, the average stature and ingestion of some nutrients related to obesity were explored in men and women of food security and all categories of FI by nutritional status (Table 3). In men, the stature decreased with the increase in BMI categories, only for men from FI families. Among women, a trend towards lower average height was observed with the increase in BMI categories, but the trend towards lower average height was greater among those from FI families than those from FS. Comparing the trend for energy intake, it increased for males and decreased for females. Thus, women with obesity had the lowest energy intake. Among both men and women, the lowest intakes of protein and the highest intake of carbohydrates in percentage of energy intake were observed in the underweight group, independently of the FS/FI status (Table 3).

Table 3 -
Weighted mean and standard Error (SE) of stature, energy and nutrient intake (%kcal) among men and women of food security and all categories of food insecurity by nutritional status. National Dietary Survey (NDS). Brazil, 2017-2018.

DISCUSSION

The findings in the present study suggest, after exploratory analysis, that the risk of obesity among women with FI may be related to short stature. The mean stature was lower among women with obesity and from FI families, and these women also reported the lowest energy intake. Short stature is a marker for early-in-life undernutrition [1515. Alderman H, Behrman JR, Glewwe P, Fernald L, Walker S. Evidence of Impact of Interventions on Growth and Development during Early and Middle Childhood. In: Bundy DAP, Silva ND, Horton S, Jamison DT, Patton GC. Child and Adolescent Health and Development. Washington: The International Bank for Reconstruction and Development / The World Bank; 2017. p. 79-98.-1717. Davies JH, Child J, Freer J, Storr HL. Inequalities in the assessment of childhood short stature. Br J Gen Pract. 2023;73(729):150-1. https://doi.org/10.3399/bjgp23X7323099
https://doi.org/10.3399/bjgp23X7323099 ...
], and in a large Brazilian survey conducted in the urban areas of twenty-six state capitals and the federal district, Sichieri et al. [2525. Sichieri R, Santos Barbosa F, Moura EC. Relationship between short stature and obesity in Brazil: a multilevel analysis. Br J Nutr . 2010;103(10):1534-38. https://doi.org/10.1017/S0007114509993448
https://doi.org/10.1017/S000711450999344...
] reported that the odds of being obese were strongly associated with short stature. Accordingly, the authors, among women with short stature, the odds of being obese was 3 times higher than among women with a stature greater than the 5th percentile after adjusting for diet, physical activity, and some environmental factors.

Another study, accomplished with woman in Quilombola communities in Brazil, shows results similar to the one seen by us, where short stature was significantly associated with excess body weight but not with a high energy intake [1616. Ferreira HDS, Luna AA, Florêncio TMMT, Assunção ML, Horta BL. Short stature is associated with overweight but not with high energy intake in low-income Quilombola women. Food Nutr Bull. 2017;38(2):216-25. https://doi.org/10.1177/0379572117699759
https://doi.org/10.1177/0379572117699759...
]. Quilombola communities have high discrimination and exclusion, that impose socioeconomic conditions that place them at a risk of food insecurity [1616. Ferreira HDS, Luna AA, Florêncio TMMT, Assunção ML, Horta BL. Short stature is associated with overweight but not with high energy intake in low-income Quilombola women. Food Nutr Bull. 2017;38(2):216-25. https://doi.org/10.1177/0379572117699759
https://doi.org/10.1177/0379572117699759...
], as well as our study population.

Reinhardt and Fanzo [3636. Reinhardt K, Fanzo J. Addressing chronic malnutrition through multi-sectoral, sustainable approaches: A review of the causes and consequences. Front Nutr. 2014;1:13. https://doi.org/10.3389/fnut.2014.000133
https://doi.org/10.3389/fnut.2014.000133...
] also found that children who experienced stunting early in life and who remained stunted had a higher chance of developing overweight in adulthood. Among girls with stunting in Brazil, a low metabolic rate was observed by Hoffman et al. [2323. Hoffman DJ, Sawaya AL, Verreschi I, Tucker KL, Roberts SB. Why are nutritionally stunted children at increased risk of obesity? Studies of metabolic rate and fat oxidation in shantytown children from São Paulo, Brazil. Am J Clin Nutr. 2000;72(3):702-7. https://doi.org/10.1093/ajcn/72.3.702
https://doi.org/10.1093/ajcn/72.3.702...
], suggesting a possible pathway to explain the association of household FI and obesity among women in the present study, since they had quite similar energy intake but a low average stature.

Comparing our data with previous analysis performed on the same sample (NDS), adults from households with FI reported lower energy intake than the overall adult population [3737. Instituto Brasileiro de Geografia e Estatística. Pesquisa de Orçamentos Familiares 2017-2018: análise do consumo alimentar pessoal no Brasil [Internet]. Rio de Janeiro: IBGE ; 2020 [cited 2023 Apr 17]. Available from: https://biblioteca.ibge.gov.br/index.php/biblioteca-catalogo?view=detalhes&id=2101742
https://biblioteca.ibge.gov.br/index.php...
]. The overall mean energy intake, according to NDS, for men was 2,023 kcal, compared to 1,777 kcal among underweight men with FI and 1,996 kcal among men with obesity and FI. For women, the overall mean was 1,568 kcal, 1,537 kcal among underweight women, and 1,480 kcal among those with obesity and FI. We add that in our study, the energy intake of women with FI and obesity was even lower compared than women with obesity and FS. Therefore, data on short stature and energy intake, mainly among women, suggest that obesity is related to energy balance among individuals from disadvantaged and poor populations.

For the other dietary markers, there were no considerable differences between our participants and the overall adult population [3737. Instituto Brasileiro de Geografia e Estatística. Pesquisa de Orçamentos Familiares 2017-2018: análise do consumo alimentar pessoal no Brasil [Internet]. Rio de Janeiro: IBGE ; 2020 [cited 2023 Apr 17]. Available from: https://biblioteca.ibge.gov.br/index.php/biblioteca-catalogo?view=detalhes&id=2101742
https://biblioteca.ibge.gov.br/index.php...
]. The percentage of energy from protein was 18.2% among women and 19.0% among men, in the overall adult population, and a greater difference was observed only among underweight women in our population, with a value of 16.4% energy from protein [3737. Instituto Brasileiro de Geografia e Estatística. Pesquisa de Orçamentos Familiares 2017-2018: análise do consumo alimentar pessoal no Brasil [Internet]. Rio de Janeiro: IBGE ; 2020 [cited 2023 Apr 17]. Available from: https://biblioteca.ibge.gov.br/index.php/biblioteca-catalogo?view=detalhes&id=2101742
https://biblioteca.ibge.gov.br/index.php...
].

This study has some limitations. First, the data are cross-sectional, making it difficult to determine the temporality of some of the associations studied. Second, the EBIA evaluate FS score in the past 3 months, whereas nutritional outcomes, such as weight, and particularly, stature, accrue over much longer periods. However, the association of FS with all socio-economic indicators suggests that individuals classified as having FI are at chronic risk of scarcity. Other factors, within the causal network were also left unassessed.

Measurement error may result from using self-reported body height and weight to calculate BMI for the weight classification. However, prior studies have established the reliability and validity of self-reported body height and weight data in Brazil and in other countries [3131. Moreira NF, Luz VG, Moreira CC, Pereira RA, Sichieri R, Ferreira MG, et al. Self-reported weight and height are valid measures to determine weight status: Results from the Brazilian National Health Survey (PNS 2013). Cad Saude Publica. 2018;34(5):e00063917. https://doi.org/10.1590/0102-311X000639177
https://doi.org/10.1590/0102-311X0006391...
-3333. Qin B, Llanos AAM, Lin Y, Szamreta EA, Plascak JJ, Oh H, et al. Validity of self-reported weight, height, and body mass index among African American breast cancer survivors. J Cancer Surviv. 2018;12(4):460-8. https://doi.org/10.1007/s11764-018-0685-9
https://doi.org/10.1007/s11764-018-0685-...
].

Another limitation was considered in relation to the food intake report. In fact, it is also necessary to consider that overweight individuals who are dissatisfied with their body weight may be more likely to underreport their usual food intake when compared to those without excess weight and those satisfied with their body weight, respectively [3838. Avelino GF, Previdelli ÁN, Castro MA, Marchioni DML, Fisberg RM. Sub-relato da ingestão energética e fatores associados em estudo de base populacional. Cad Saude Publica. 2014;30(3):663-8. https://doi.org/10.1590/0102-311X000737133
https://doi.org/10.1590/0102-311X0007371...
].

Additionally, the associations between body height and obesity can be confounded by other variables that we did not consider and may be involved in the causal network, such as genetics, one of the determinants of an individual having tall or short stature, and postpartum weight retention in women, which could be the reason for being overweight [3939. Flores TR, Nunes BP, Miranda VIA, Silveira MF, Domingues MR, Bertoldi AD. Ganho de peso gestacional e retenção de peso no pós-parto: dados da coorte de nascimentos de 2015, Pelotas, Rio Grande do Sul, Brasil. Cad Saude Publica. 2020;36(11):e00203619. https://doi.org/10.1590/0102-311X002036199
https://doi.org/10.1590/0102-311X0020361...
]. For this type of analysis, studies dealing with the subject are specific and were not addressed in this work.

CONCLUSION

Food insecure men and women who develop obesity have lower average stature. Still, in women the risk of developing obesity is possibly related to the metabolic background, since women with FI who develop obesity have a lower average stature and lower energy intake. In addition, stature decreases significantly as the FI severity increases in these women. Considering the limitation of national studies dealing with possible factors relating to the effects of FI on obesity among Brazilian women, this study presents results that attempt to explore the relationship of short stature in the debate on the causality of social inequalities related to FI identified by the EBIA.

More detailed studies should compare metabolic differences among men and women living in scarcity scenarios to understand the underlying mechanisms and moderators that contribute differently to the sex nutritional status.

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  • 1
    Article elaborated from dissertation by TB DOMINGOS, entitled “Análise do status de peso da população brasileira exposta a insegurança alimentar”. Universidade Federal do Rio de Janeiro; 2023.
  • Support:

    Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (Edital Universal 2018, process nº 423174/2018-5); Fundação Carlos Chagas de Apoio à Pesquisa do Estado do Rio de Janeiro (FAPERJ) (Edital APQ1 2019 process in E-26/10.001596/2019). Fundação Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes) (Process n° 88887.363839/2019-00).

Edited by

Editor:

Francisco de Assis Guedes de Vasconcelos

Publication Dates

  • Publication in this collection
    22 Apr 2024
  • Date of issue
    2024

History

  • Received
    07 June 2023
  • Reviewed
    01 Nov 2023
  • Accepted
    14 Nov 2023
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