9 billion adults, 18 years and older, were overweight. Of these over 650 million were obese. Most of the world’the periodization of the development of children population live in countries where overweight and obesity kills more people than underweight. 41 million children under the age of 5 were overweight or obese in 2016.
Over 340 million children and adolescents aged 5-19 were overweight or obese in 2016. Overweight and obesity are defined as abnormal or excessive fat accumulation that may impair health. BMI greater than or equal to 30. BMI provides the most useful population-level measure of overweight and obesity as it is the same for both sexes and for all ages of adults. However, it should be considered a rough guide because it may not correspond to the same degree of fatness in different individuals.
For children, age needs to be considered when defining overweight and obesity. 3 standard deviations above the WHO Child Growth Standards median. 2 standard deviations above the WHO Growth Reference median. 9 billion adults aged 18 years and older were overweight. Of these over 650 million adults were obese. The worldwide prevalence of obesity nearly tripled between 1975 and 2016. In 2016, an estimated 41 million children under the age of 5 years were overweight or obese.
Once considered a high-income country problem, overweight and obesity are now on the rise in low- and middle-income countries, particularly in urban settings. In Africa, the number of overweight children under 5 has increased by nearly 50 per cent since 2000. Nearly half of the children under 5 who were overweight or obese in 2016 lived in Asia. Overweight and obesity are linked to more deaths worldwide than underweight. The fundamental cause of obesity and overweight is an energy imbalance between calories consumed and calories expended.