The term abnormal means not merely abnormal (i.e., abnormal for the person at large because it differs from average), but abnormal above a certain threshold.
For example, a weight loss below that of a 30-pound subject is abnormal if it has a relative average weight of over 40 pounds. This threshold has been raised to 20 pounds over 30 pounds and to 30 pounds over 40 pounds. In order to be an abnormal weight, the difference between the actual individual weight and the average weight in the population should exceed 10 percent of the population weighted average.
The American College of Cardiology (ACC) has defined an “unhealthy weight” as any weight below a certain threshold.
Obesity means being overweight or obese for at least 3 months.
What is the prevalence of obesity?
The prevalence of obesity has been estimated by the National Health and Nutrition Examination Surveys. These surveys are conducted every 2 years and are conducted in the US and many other countries.
In 2000, about 9.7 percent of all adults, or about 2.27 million adults, are obese or overweight.
In 2003, the prevalence estimate for men was 12 percent, but increased to 13 percent for women over the same period. For the entire population, the prevalence estimate increased to 23.2 percent for men and 25 percent for women over this same period.
In 2006, the National Health and Nutrition Examination Survey (NHANES) conducted the first nationally representative estimates ever of adult obesity from US adults. Adults ranged from 17 to 84 years of age, and the prevalence estimate for men was 15–38 percent and for women was 15–41 percent.
Obesity is associated with increased health and metabolic disorders. More than 20 percent of adults with a body mass index (BMI) of 35 or greater are obese. The prevalence of BMI and obesity has been associated with cardiovascular disease, type 2 diabetes, high triglycerides, hypertension, dyslipidemia, and low HDL cholesterol.
Are adults obese in every state?
Obesity has been associated with increased rates of diabetes in many states, but rates vary somewhat geographically.
The prevalence of obesity varies across the nation, and in some areas the prevalence may even be decreasing over the last decade.
How has obesity changed in the US over time?
The proportion of Americans who are overweight increased by about 11 million between 1960 and 2000. The increase in obesity rates was greatest over the last decade, rising from
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