Overweight more prevalent among children than among adolescents

Area of Science:

• Public Health
• Paediatric Endocrinology
• Epidemiology

Background:

• Childhood overweight and obesity are significant public health concerns.
• Understanding trends in paediatric obesity is crucial for developing effective interventions.
• Socioeconomic factors, such as parental education, may influence obesity prevalence.

Purpose of the Study:

• To investigate changes in paediatric overweight/obesity prevalence over a 20-year period (1982-2002).
• To examine these trends in a population with a high level of parental post-graduate education.
• To compare prevalence across different age groups (4, 10, 16 years) and genders.

Main Methods:

• Comparative analysis of two cross-sectional samples of children in Uppsala County, Sweden.
• Data collected in 1982 and 2002, including children aged 4, 10, and 16 years.
• Calculation of mean Body Mass Index (BMI) and age-adjusted BMI (ISO-BMI) cut-off values for different percentiles and groups.

Main Results:

• A significant shift towards higher BMI-for-age was observed in 4- and 10-year-olds between 1982 and 2002, with a more pronounced increase in girls.
• No significant shift in BMI distribution was found for 16-year-olds, except for a slight increase in mean BMI for 16-year-old girls in the middle 50% group.
• In 2002, 4- and 10-year-old girls showed a higher proportion of overweight/obesity compared to boys, a difference not seen in 16-year-olds.

Conclusions:

• Young children, especially girls, experienced a substantial increase in overweight/obesity prevalence over two decades.
• The findings persist despite a highly educated population, indicating complex contributing factors.
• The lack of change in adolescents suggests recent shifts in environmental or lifestyle influences on child weight status.