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WHO parameters for BMI-for-age parameters are defined by standard deviations and describe overweight to be greater than +1standard deviation from the mean (equivalent to BMI=25 kg/m2 at 19 years) and obese as +2 standard deviations from the mean for 5 to 19 year-olds (equivalent to BMI=30 kg/m2 at 19 years). [7]
Rates of overweight among children 2 to 19 years in the USA. From 1980 to 2013, the prevalence of overweight and obesity in children increased by nearly 50%. [102] Currently 10% of children worldwide are either overweight or obese. [2] In 2014, the World Health Organization established a high-level commission to end childhood obesity. [103]
The current trends show that children aged 12–19 years old, have obesity levels 2.2% higher than children 6–11 years old (20.6% vs. 18.4%), and children 6–11 years old have obesity levels 4.5% higher than children aged 2–5 years old (18.4% vs. 13.9%).
Meaning, over one-third of children and teens in the US were overweight or obese. Statistics from a 2016–2017 page on the CDC's official website that 13.9% of toddlers and children age 2–5, 18.4% of children 6–11, and 20.6% of adolescents 12–19 are obese. [73]
In 2002, 15% of children from 6 to 12 years of age were overweight; by gender, 15.5% of males and 14.4% of females were overweight. In the same age range, 12% of children were obese; by gender, 14.7% of males and 9.1% of females were categorized as obese.
The Leffler formula is used for children 0–10 years of age. [1] In those less than a year old, it is = + and for those 1–10 years old, it is = + where m is the number of kilograms the child weighs and a m and a y respectively are the number of months or years old the child is.
In the 1950s two percent of households owned television sets, and 40 years later, 98% of households owned at least 1 television set. Current data reveals that, between the ages of 2 and 17 years, on average children spend more than 3 years of their lives watching television. [2] Unhealthy food advertisements correlate with childhood obesity rates.
In 2021, 148.1 million children under five years old were stunted, 45 million were wasted, and 37 million were overweight or obese. [26] The same year, an estimated 45% of deaths in children were linked to undernutrition.