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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]
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]
Prevalence of obesity in the adult population, top countries (2016), the United States has the tenth highest rate in the world. The CDC defines an adult (a person aged 20 years or greater) with a body mass index (BMI) of 30 or greater as obese and an adult with a BMI of 25.0 to 29.9 as overweight. [4]
Obesity has been observed throughout human history. Many early depictions of the human form in art and sculpture appear obese. [2] However, it was not until the 20th century that obesity became common — so much so that, in 1997, the World Health Organization (WHO) formally recognized obesity as a global epidemic [3] and estimated that the worldwide prevalence of obesity has nearly tripled ...
People are classified as obese when their body mass index (BMI)—a person's weight divided by the square of the person's height—is over 30 kg/m 2; the range 25–30 kg/m 2 is defined as overweight. [1]
Being overweight has been shown not to increase mortality [qualify evidence] in older people: in a study of 70 to 75-year old Australians, mortality was lowest for "overweight" individuals (BMI 25 to 29.9), [18] while a study of Koreans found that, among those initially aged 65 or more, an increase in BMI to above 25 was not associated with ...
That’s why the fear of becoming fat, or staying that way, drives Americans to spend more on dieting every year than we spend on video games or movies. Forty-five percent of adults say they’re preoccupied with their weight some or all of the time—an 11-point rise since 1990. Nearly half of 3- to 6- year old girls say they worry about being ...
Dieting is the practice of eating food in a regulated way to decrease, maintain, or increase body weight, or to prevent and treat diseases such as diabetes and obesity.As weight loss depends on calorie intake, different kinds of calorie-reduced diets, such as those emphasising particular macronutrients (low-fat, low-carbohydrate, etc.), have been shown to be no more effective than one another.