User:Savannahcallie/Obesity in the United States

Obesity in the United States is a major health issue resulting in numerous diseases, specifically increased risk of certain types of cancer, coronary artery disease, type 2 diabetes, stroke, as well as significant increases in early mortality and economic costs.

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. 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. Children (persons aged 2 to 19 years) with a BMI at or above the 95th percentile of children of the same age and sex are defined as obese, and children with a BMI at or above the 85th percentile but less than the 95th percentile are defined as overweight.

Compared to non-obese Americans, obese Americans incur an average of $1,429 more in medical expenses annually, and the obese American population spends approximately $147 billion per year in added medical expenses.

The obesity rate has steadily increased since the initial 1962 recording of 23%. By 2014, figures from the CDC found that more than one-third (crude estimate 36.5%) of U.S. adults and 17% of children were obese. The National Center for Health Statistics at the CDC showed in their most up to date statistics that 42.4% of U.S. adults were obese as of 2017-2018 (43% for men and 41.9% for women).

For the following statistics, adults is defined as age 20 and over. The overweight + obese percentages for the overall US population are higher reaching 39.4% in 1997, 44.5% in 2004, 56.6% in 2007, 63.8% (adults) and 17% (children) in 2008, in 2010 65.7% of American adults and 17% of American children are overweight or obese, and 63% of teenage girls become overweight by age 11. In 2013 the Organization for Economic Co-operation and Development (OECD) found that 57.6% of all American citizens were overweight or obese. The organization estimates that 3/4 of the American population will likely be overweight or obese by 2020. According to research done by the Harvard T.H. Chan School of Public Health, it is estimated that around 40% of Americans are considered obese, and 18% are considered severely obese as of 2019. Severe obesity is defined as a BMI over 35 in the study. Their projections say that about half of the US population (48.9%) will be considered obese and nearly 1 in 4 (24.2%) will be considered severely obese by the year 2030.

Obesity has been cited as a contributing factor to approximately 53,754-170,064 deaths in the United States per year and has increased health care use and expenditures,   costing society an estimated $117 billion in direct (preventive, diagnostic, and treatment services related to weight) and indirect (absenteeism, loss of future earnings due to premature death) costs. This exceeds health care costs associated with smoking and accounts for 6% to 12% of national health care expenditures in the United States.