The World Obesity Federation’s 2023 atlas predicts that 51% of the world, or more than 4 billion people, will be obese or overweight within the next 12 years. Rates of obesity are rising particularly quickly among children and in lower-income countries, the report found.
Describing the data as a “clear warning,” Louise Baur, president of the World Obesity Federation, said that policymakers needed to act now to prevent the situation worsening.
“It is particularly worrying to see obesity rates rising fastest among children and adolescents,” she said in a statement.
“Governments and policymakers around the world need to do all they can to avoid passing health, social and economic costs on to the younger generation.”
The report found that childhood obesity could more than double from 2020 levels, to 208 million boys and 175 million girls by 2035.
The cost to society is significant as a result of the health conditions linked to being overweight, the federation said: more than $4 trillion annually by 2035, or 3% of global GDP.
The report uses body mass index (BMI) for its assessments, a number calculated by dividing a person’s weight in kilograms by their height in meters squared. In line with the World Health Organization’s guidelines, a BMI score over 25 is overweight and over 30 is obese.
In 2020, 2.6 billion people fell into these categories, or 38% of the world’s population.
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