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Body fat percentage is total body fat expressed as a percentage of total body weight. There is no generally accepted definition of obesity based on total body fat. Most researchers have used >25% in men, and >30% in women, as cut-points to define obesity, [41] but the use of these values have been disputed. [42]
In 2022, over 1 billion people lived with obesity worldwide (879 million adults and 159 million children), representing more than a double of adult cases (and four times higher than cases among children) registered in 1990. [7] [19] Obesity is more common in women than in men. [1] Today, obesity is stigmatized in most of the world. Conversely ...
Central obesity is a key feature of the syndrome, as both a sign and a cause, in that the increasing adiposity often reflected in high waist circumference may both result from and contribute to insulin resistance. However, despite the importance of obesity, affected people who are of normal weight may also be insulin-resistant and have the ...
The prevalence of severe obesity was higher among women at 12.7% compared to 6.7% for men. Among age groups, the prevalence of obesity was highest among adults between ages 40 and 59 at 46.4%.
Obesity in adults is divided into three categories. Adults with a BMI of 30 to 34.9 have class 1 obesity; adults with a BMI of 35 to 39.9 have class 2 obesity; adults with a BMI of 40 or greater have class 3 obesity, which is also known as extreme or severe obesity (and was formerly known as morbid obesity).
Obesity is defined as an abnormal accumulation of body fat, usually 20% or more over an individual's ideal body weight. [1] This is often described as a body mass index (BMI) over 30. However, BMI does not account for whether the excess weight is fat or muscle, and is not a measure of body composition. [2]
Class II obesity: BMI of 35–39.9 kg/m². Class III obesity: BMI of 40 kg/m² or higher “In general, class III obesity is associated with greater risk of morbidity and mortality compared to ...
When examining groups of people with obstructive sleep apnea, researchers have found that 10–20% of them meet the criteria for OHS as well. The risk of OHS is much higher in those with more severe obesity, i.e. a body mass index (BMI) of 40 kg/m 2 or higher. It is twice as common in men compared to women. The average age at diagnosis is 52.