What are overweight and obesity?
The terms "overweight" and "obesity" refer to a body weight that is greater than what is considered normal or healthy for a certain height. Being overweight is usually due to extra body fat. However, being overweight can also occur due to excess muscle, bone, or water. People with obesity generally have too much body fat.
The body mass index (BMI) is a way of knowing whether a person is at a healthy weight, overweight, or obese. BMI is a measurement based on weight relative to height. The higher the BMI, the greater the risk of developing health problems from overweight and obesity.
Reaching and maintaining a healthy weight can be a long-term challenge if a person is overweight or obese. Maintaining a healthy weight, or at least not gaining more weight if you are already overweight, can help you decrease the chance of developing certain health problems.
Portrait of a Hispanic woman.
More than 1 in 3 adults in the United States is considered to be obese.
How common are overweight and obesity?
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| overweight |
more than 1 in 3 adults were classified as overweight individuals
more than 1 in 3 adults were classified as obese individuals
more than 2 out of 3 adults were classified as overweight or obese individuals
For more statistical data on overweight and obesity in the United States, see the NIDDK document called Overweight & Obesity Statistics.
Who is more likely to be overweight?
Men are more likely to be overweight than women.3
Who is more likely to be obese?
According to a national survey in the United States, some groups are more likely to be obese.2
Among black adults, 48 out of 100 were classified as obese individuals.
Among Hispanic adults, 42 out of 100 were classified as obese individuals.
Among white adults, 36 out of 100 were classified as obese individuals.
Women are more likely to be obese than men.2
Many factors play a role in determining who is most likely to be obese, and these factors can affect people differently.
Why do people gain weight?
Many factors can cause weight gain and affect how much weight the body stores. When a person consumes more calories from food or drink than he uses in physical activity and daily life, such as sitting or sleeping, the body stores the extra calories. Over time, if you continue to consume more calories than you use, you will probably gain weight. Excessive weight gain can cause overweight or obesity.
Who Should Lose Weight?
Medical experts recommend that people who are obese lose weight.
Most people who are overweight and one or more factors that increase the chance of heart disease must lose weight. These factors include:
diabetes
prediabetes
high blood pressure
dyslipidemia: high concentrations of LDL cholesterol, low concentrations of HDL cholesterol or high concentrations of triglycerides NIH external link
large waist size: for men, more than 40 inches; for women, over 35 inches.
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| overweight |
Bibliography
[1] writer MD, Ryan DH, Apovian CM, et al. 2013 AHA / command / TOS guideline for the management of overweight and fatness in adults. Circulation. 2014; 129: S102-S138.
[2] Flegal kilometer, Kruszon-Moran D, Carroll MD, Fryar CD, Ogden CL. Trends in fatness among adults within the u. s., 2005 to 2014. JAMA. 2016; 315 (21): 2284–2291.
[3] Fryar CD, Carroll MD, Ogden CL. Centers for malady management and interference, National Center for Health Statistics. Health E-Stats. Prevalence of overweight, obesity, and extreme fatness among adults aged twenty and over: u. s., 1960–1962 through 2013–2014. https://www.cdc.gov/nchs/data/hestat/obesity_adult_13_14/obesity_adult_13_14.pdf External link (PDF, 342 KB). revealed Gregorian calendar month 2016. Accessed Gregorian calendar month twenty five, 2017.
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