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Socio-demographic Factors Linked to Overweight and Obesity

by Iswarya on Mar 27 2020 3:23 PM

Socio-demographic Factors Linked to Overweight and Obesity
Despite an overall decline in the prevalence of childhood overweight and obesity, increasing deprivation disparities were observed during the last decade, reports a new study. The findings of the study are published in the journal JAMA Network Open.
This is the conclusion of a new study based on data from more than one million children in Catalonia, which was carried out by the Barcelona Institute for Global Health (ISGlobal) a center supported by "la Caixa" and the IDIAPJGol Institute.

Levels of childhood overweight and obesity have plateaued in many middle- and high-income countries over the past decade, but prevalence rates remain high. In Spain, around 41% of children aged 6 to 9 years were overweight and/or obese in 2015--the second-highest prevalence rate in Europe. In the Catalonia region, childhood overweight and obesity rates are similar to those of Spain as a whole.

The new study, published in Jama Network Open, was based on data from 1.1 million children and adolescents in Catalonia aged 2 to 17 years with at least one height and weight record in the Information System for Research in Primary Care (SIDIAP) between 2006 and 2016. The children were divided into three age groups: 2-5 years, 6-11 years, and 12-17 years. Prevalence rates and time trends for overweight and obesity were calculated and stratified by socio-demographic characteristics: age, sex, urban/rural residence, nationality, and the socioeconomic deprivation score of the family's census tract, as calculated using the MEDEA index.

In general, the findings showed that the prevalence of overweight and obesity decreased slightly in both sexes and all age groups. During the ten-year study period, rates of overweight and obesity fell from 40% to 38% in girls aged 6 to 11 years and from 42% to 40% in boys of the same age group. However, prevalence rates rose in the most deprived urban areas and in children of non-Spanish nationalities.

In areas with lower socioeconomic levels, rates of overweight and/or obesity increased slightly, whereas wealthier areas saw a significant decrease, leading to a wider inequality gap. For example, between 2006 and 2016, the obesity rate in girls aged 6 to 11 years fell by 15.8% in neighborhoods with the highest socioeconomic level but increased by 7.3% in the most disadvantaged areas.

Jeroen de Bont, the researcher at ISGlobal and IDIAPJGol and lead author of the study, commented: "The data can be extrapolated to Spain as a whole and they may reflect the impact of the 2008 economic crisis, which exacerbated inequality within urban areas and increased the number of vulnerable families, who may be more likely to follow unhealthy nutritional habits."

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Children from North, Central and South America?--the the vast majority of whom were Latin American?--had the highest rates of overweight and/or obesity. Specifically, 56% of boys and 50% of girls of these nationalities between the ages of 6 and 11 years were overweight and/or obese. Children of African and Asian nationalities saw the largest increase in overweight or obesity during the study period.

"With the exception of Latin America, children of non-Spanish nationalities were less overweight and/or obese at the start of the study, but their prevalence rates increased over the years until they reached the levels of overweight and/or obesity in Spanish children. This trend was especially pronounced in African and Asian children," commented de Bont. The children's "gradual adoption of the Western lifestyle and eating habits" could explain these findings, he added.

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Talita Duarte-Salles, the researcher at IDIAPJGol and co-coordinator of the study, commented: "These prevalence rates are alarming since obesity in childhood and adolescence is associated with health consequences later in life, including cardiovascular, musculoskeletal and endocrine diseases."

The study also found that children between 6 and 7 years of age were the most vulnerable to developing overweight and/or obesity. "These findings demonstrate the importance of public health promotion programs at early ages where primary healthcare professionals can play a key role in identifying overweight children during routine visits," commented Duarte-Salles.

Source-Eurekalert


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