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Obesity spiked in children during COVID-19 lockdowns -- only the youngest bounced back

BMI data from over 1 million children in England indicates high lifetime costs to society of post-pandemic obesity rates

Date:
January 24, 2024
Source:
PLOS
Summary:
Obesity among primary school children in the UK spiked during the COVID-19 lockdown, with a 45% increase between 2019/20 and 2020/21 among 4-5-year-olds, according to a new study. The authors estimated that without reversals, increased obesity rates in Year 6 children alone will cost society an additional 800 million in healthcare.
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Obesity among primary school children in the UK spiked during the COVID-19 lockdown, with a 45% increase between 2019/20 and 2020/21 among 4-5-year-olds, according to a study published on January 24, 2024 in the open-access journal PLOS ONE by Iván Ochoa-Moreno from the University of Southampton, UK, and colleagues. The authors estimated that without reversals, increased obesity rates in Year 6 children alone will cost society an additional £800 million in healthcare.

During the first year of the pandemic, school closures dramatically altered the routines of young children. Cancellation of organized sports, disrupted sleep schedules, more screen time, and deterioration of healthy eating habits likely contributed to the largest single-year increase in overweight and obesity prevalence seen in children in decades. To better understand the long-term health and economic costs of rising obesity rates in young children, the authors of the study compared Body Mass Index (BMI) data from England's National Childhood Measurement Programme (NCMP) before, during, and after the COVID-19 pandemic among children in their first and last years of primary school (aged 4-5 and 10-11 years old). Using data from two additional longitudinal cohorts in the UK, they modeled the impact of these BMI trends on adult health outcomes and costs.

The researchers observed a 45% increase in obesity prevalence during 2020-2021 in children between 4-5 years old, and a similar effect in Year 6 children. This increase was twice as high in the most deprived areas of England. While the number of overweight and obese 4-5 year olds returned to pre-pandemic levels the following year, the increases seen in older children persisted into 2022. The study estimated that this group of children will cost society an additional £800 million in healthcare, for conditions like type 2 diabetes and heart disease, over their lifetimes.

The researchers state that the persistence of weight gain in older children suggests that reversing obesity is very challenging in older age groups, while the quick reversal to pre-pandemic levels in young children highlights the promise of policies targeting children under five as a strategy to tackle obesity.

One of the study's authors, Professor Keith Godfrey, adds: "The sharp increase in childhood obesity during the COVID-19 pandemic illustrates the profound impacts on children's development. Alongside the escalating costs of the ongoing epidemic of childhood obesity, it is clear that more radical new policy measures are required to reduce obesity and secure wellbeing and prosperity for the country as a whole."


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Journal Reference:

  1. Iván Ochoa-Moreno, Ravita Taheem, Kathryn Woods-Townsend, Debbie Chase, Keith M. Godfrey, Neena Modi, Mark Hanson. Projected health and economic effects of the increase in childhood obesity during the COVID-19 pandemic in England: The potential cost of inaction. PLOS ONE, 2024; 19 (1): e0296013 DOI: 10.1371/journal.pone.0296013

Cite This Page:

PLOS. "Obesity spiked in children during COVID-19 lockdowns -- only the youngest bounced back." ScienceDaily. ScienceDaily, 24 January 2024. <www.sciencedaily.com/releases/2024/01/240124164531.htm>.
PLOS. (2024, January 24). Obesity spiked in children during COVID-19 lockdowns -- only the youngest bounced back. ScienceDaily. Retrieved February 28, 2024 from www.sciencedaily.com/releases/2024/01/240124164531.htm
PLOS. "Obesity spiked in children during COVID-19 lockdowns -- only the youngest bounced back." ScienceDaily. www.sciencedaily.com/releases/2024/01/240124164531.htm (accessed February 28, 2024).

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