Childhood Obesity Spiked amid COVID-19 Lockdowns, Study Shows

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The number of American children who are overweight or obese has surged by a relative increase of almost 24 percent since the COVID-19 pandemic began, according to a new study.

An analysis by the University of Michigan and Kaiser Permanente Southern California found that children gained excess weight during the pandemic, particularly children ages 5 to 11.

While 36.2 percent of children in that age group were overweight or obese between March 2019 and January 2020, that figure rose to 45.7 percent between March 2020 and January 2021 — an absolute increase of 8.7 percent and a relative increase of 23.8 percent.

Meanwhile, children between the ages of 12 and 15 recorded a 13.4 percent relative increase in overweight or obesity, while 16 and 17-year-olds saw an 8.3 percent relative increase, according to the study, which was published in the Journal of the American Medical Association.

“When we compared the weight gain among children from 2019 to 2020, we found that there was more weight gained during the pandemic for youths of all ages,” said senior author, Corinna Koebnick of the Kaiser Permanente Southern California Department of Research & Evaluation. “And, this weight gain fell disproportionally on the youngest children. On average, 5- to-11-year-olds gained 5 extra pounds, while 16- to-17-year-olds gained 2 extra pounds. The result was an almost 9 percent increase in the youngest children falling into the categories of being overweight and obese.”

“As children go back to school it will be important to focus on health and physical activity to help children not carry unwanted extra weight into adulthood,” Koebnick added.

As the majority of the increase in children and teens ages 5 to 15 was marked by a rise in obesity, researchers wrote that the findings, if generalizable to the U.S., “suggest an increase in pediatric obesity due to the pandemic.”

The study did not assign any causes for the spike in overweight and obesity. However, COVID-19 lockdowns saw parks, schools and related facilities closed, leaving many children with fewer opportunities to exercise.

Researchers analyzed data for 191,509 children and teens ages 5 to 17 from the Kaiser Permanente Southern California electronic health record database. The data was adjusted for sex, race, ethnicity, state-subsidized health insurance, neighborhood education, neighborhood income and number of parks in the census tract.

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