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Being overweight or having obesity may increase the risk of several diseases, such as diabetes, heart disease, and some cancers, and may lead to short- and long-term health problems during pregnancy. [2] Rates of obesity worldwide tripled from 1975 to 2016 to involve some 1.8 billion people and 39% of the world adult population. [3]
By 2014, figures from the National Institute of diabetes shows that 82% of Americans are overweight. [12] National Center for Health Statistics at the CDC showed that 42.4% of U.S. adults were obese as of 2017–2018 (43% for men and 41.9% for women). [13] For the following statistics, "adult" is defined as age 20 and over.
On average obese people have a greater energy expenditure than normal weight or thin people and actually have higher basal metabolic rates. [45] [46] This is because it takes more energy to maintain an increased body mass. [47] Obese people also underreport how much food they consume compared to those of normal weight. [48]
Obesity has become a common health problem. It affects about one in five children and two out of five adults in the U.S., according to the Centers for Disease Control and Prevention (CDC).
Like many other medical conditions, obesity is the result of an interplay between environmental and genetic factors. [2] [3] Studies have identified variants in several genes that may contribute to weight gain and body fat distribution; although, only in a few cases are genes the primary cause of obesity.
While some negative health outcomes associated with obesity are accepted within the medical community, the health implications of the overweight category are more controversial. A 2016 review estimated that the risk of death increases by seven percent among overweight people with a BMI of 25 to 27.5 and 20 percent among overweight people with a ...
For the first time in over a decade, obesity rates in the United States may finally be heading in the right direction and new weight loss drugs like semaglutide could be part of the reason why. A ...
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