Women and Black Americans are More Likely to Face Severe Adult Obesity

by Iswarya on  October 10, 2019 at 11:00 AM Obesity News
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Severe adult obesity risk rates can vary by sex, race, and other factors identifiable in childhood, reports a new study. The findings of the study are published in the International Journal of Obesity.
Women and Black Americans are More Likely to Face Severe Adult Obesity
Women and Black Americans are More Likely to Face Severe Adult Obesity

Severe adult obesity carries many risks to health, but until now, little has been known about childhood risk factors involved.

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The study, led by the corresponding author Jessica Woo, Ph.D., offers a predictive tool that doctors can use to focus intervention efforts on children and teens who are most likely to suffer health risks from obesity.

"Early prevention and treatment are critical because severe adult obesity has significant adverse health outcomes, such as diabetes and heart disease," Woo says. "And unfortunately, severe obesity is rarely reversible, even with bariatric surgery."

More than 12,000 people tracked

This study focused on "adult class II/III obesity," defined as having a body mass index (BMI) of 35 and up. The team analyzed data about more than 12,000 people who enrolled as children in the International Childhood Cardiovascular Cohort Consortium in the 1970s and 1980s, then were tracked into adulthood.

In the beginning, 82% were children of normal weight, 11% were overweight, 5% were obese, and 2% were severely obese. Around 20 years later, just 41% of the adults were normal weight, 32% were overweight, 15% were obese, and 12% were severely obese.

Overall, obesity rates were higher among American participants than from other nations. Importantly, although the highest risks for severe adult obesity were among those with severe childhood obesity, more than one-third of the severely obese adults were normal weight as children.

"The risk of severe obesity in adulthood was substantially higher for girls than boys, for black participants than white, and for those with lower education levels," Woo says.

BMI trajectory charts for doctors

The study produced a series of figures resembling growth charts that doctors can use to show children and their families what their chances are of being obese in later years. For example, a 5-year-old white girl with obesity has a 60% chance of being severely obese by age 35, and an 80% chance of being severely obese by age 45.

The study could not answer at an individual level, which children of normal weight were most likely to become severely obese in adulthood. The team did not have complete information on genetic and lifestyle risk factors. However, black girls emerged as having the highest obesity risks as a group.

"These findings suggest that greater clinical attention should be focused on both the prevention of childhood obesity at all ages, especially in girls and black populations, and to preventing children with normal weight in these groups from developing into adults with class II/III obesity," Woo says.

"With tailored childhood monitoring through childhood, adolescence, and young adulthood, it may be possible to prevent the high rate of progression to adult obesity."

Source: Eurekalert

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