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On this page:

• Defining Overweight and Obesity
• Prevalence of Overweight and Obesity
• Trends in Obesity amongst Adults and Youth in the U.s.

Defining Overweight and Obesity

A person whose weight is higher than what is considered to be a normal weight for a given superlative is described equally being overweight or having obesity.¹

Fast Facts

According to 2017–2018 data from the National Wellness and Nutrition Examination Survey (NHANES)

• Nearly i in 3 adults (30.7%) are overweight.²
• More than ii in 5 adults (42.4%) accept obesity.^two
• About i in xi adults (ix.2%) take severe obesity.ⁱⁱ

Co-ordinate to 2017–2018 NHANES information

• About 1 in half-dozen children and adolescents ages 2 to 19 (16.ane%) are overweight.³
• Almost i in 5 children and adolescents ages ii to 19 (19.3%) have obesity.³
• Nigh 1 in 16 children and adolescents ages 2 to 19 (half-dozen.i%) take severe obesity.³

Using Body Mass Alphabetize (BMI) to Gauge Overweight and Obesity

BMI is a tool to guess and screen for overweight and obesity in adults and children. BMI is defined as weight in kilograms divided past height in meters squared. BMI is related to the corporeality of fatty in the body. A high amount of fat can enhance the gamble of many health bug. A health care professional can determine if a person's health may exist at risk considering of his or her weight.

Adults

The tabular array below shows BMI ranges for overweight and obesity in adults 20 and older.

BMI of Adults Ages xx and Older

BMI	Nomenclature
xviii.5 to 24.9	Normal, or healthy, weight
25 to 29.ix	Overweight
30+	Obesity (including severe obesity)
forty+	Severe obesity

Use this online tool from the Centers for Disease Control and Prevention (CDC) to estimate BMI for adults.

Children and Teens

A kid's body composition changes during growth from infancy into adulthood, and it differs past sexual activity. Therefore, a immature person'due south weight condition is calculated based on a comparison with other same-historic period and same-sexual practice children or teens using CDC'due south age- and sex-specific growth charts. The comparison results in a percentile placement. For example, a male child whose weight in relation to his acme is greater than 75% of other same-aged boys places in the 75th percentile for BMI and is considered to be of normal or healthy weight.

Children grow at dissimilar rates at unlike times, so information technology is not always piece of cake to tell if a child is overweight. A child'south health intendance professional should evaluate the kid's BMI, growth, and potential health risks due to excess body weight.

BMI for Children and Teens

Weight Status Category	Percentile Range
Underweight	Less than fifth percentile
Normal or salubrious weight	fifth percentile to less than 85th percentile
Overweight	85th to less than 95th percentile
Obesity	95th percentile or greater
Severe obesity	120% of the 95th percentile

Use this online tool from the CDC to summate BMI and the respective BMI-for-age percentile based on CDC growth charts, for children and teens.

Causes and Wellness Consequences of Overweight and Obesity

Factors that may contribute to excess weight gain among adults and youth include genetics; types and amounts of food and drinks consumed; level of concrete activity; degree of fourth dimension spent on sedentary behaviors, such as watching Television set, engaging with a computer, or talking and texting on the phone; sleep habits; medical atmospheric condition or medicines; and where and how people live, including their access to and ability to afford healthy foods and safe places to be active.^4,5

Overweight and obesity increase the risk for many health problems, such equally blazon two diabetes, high blood pressure level, middle affliction, stroke, articulation issues, liver disease, gallstones, some types of cancer, and sleep and breathing problems, among other conditions.^5,6 Learn more than virtually the causes and health consequences of overweight and obesity.

Prevalence of Overweight and Obesity

Adults

Age-adapted percentage of US adults with overweight, obesity, and astringent obesity past sex, 2017–2018 NHANES Data ²

	All (Men and Women)	Men	Women
Overweight	30.7	34.1	27.5
Obesity (including astringent obesity)	42.4	43.0	41.9
Astringent obesity	9.2	6.9	11.5

Every bit shown in the above table

• Nearly 1 in 3 adults (30.7%) are overweight.
• More than than 1 in 3 men (34.one%) and more 1 in 4 women (27.5%) are overweight.
• More than 2 in v adults (42.four%) have obesity (including astringent obesity).
• About one in 11 adults (9.ii%) have severe obesity.
• The pct of men who are overweight (34.1%) is college than the percentage of women who are overweight (27.5%).
• The percentage of women who accept severe obesity (xi.v%) is college than the percentage of men who have severe obesity (6.9%).

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Historic period-adjusted prevalence of obesity among adults ages 20 and over, by sex and age: U.s., 2017–2018 ⁷

NOTES: Estimates for adults ages xx and over were age adapted past the direct method to the 2000 U.South. Census population using the age groups 20–39, twoscore–59, and 60 and over. Rough estimates are 42.5% for total, 43.0% for men, and 42.1% for women. Access information tabular array for Figure i (PDF, 97.2 KB) .
SOURCE: National Middle for Health Statistics, National Wellness and Nutrition Examination Survey, 2017–2018.

Every bit shown in the above bar graph

• Among adults ages 20 and over, there are no significant differences in prevalence of obesity by sex or age group

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Age-adapted prevalence of obesity amid adults ages twenty and over, by sex, race, and Hispanic origin: United states of america, 2017–2018 ^vii

^oneSignificantly different from all other race and Hispanic-origin groups.
^twoSignificantly dissimilar from men for same race and Hispanic-origin grouping.
NOTES: Estimates were age adjusted by the straight method to the 2000 U.Southward. Census population using the historic period groups 20–39, twoscore–59, and threescore and over. Access information tabular array for Figure 2 (PDF, 97.two KB) .
SOURCE: National Middle for Wellness Statistics, National Health and Nutrition Test Survey, 2017–2018.

Equally shown in the above bar graph

• More than 2 in 5 non-Hispanic white adults (42.2%) accept obesity.
• Nearly one in 2 non-Hispanic Black adults (49.half-dozen%) have obesity.
• More 1 in 6 non-Hispanic Asian adults (17.4%) have obesity.
• Nearly ane in 2 Hispanic adults (44.8%) accept obesity.
• Obesity affects more ii in 5 non-Hispanic white men (44.seven%), more than ii in 5 not-Hispanic Black men (41.ane%), more than than i in six non-Hispanic Asian men (17.five%), and more than than 2 in v Hispanic men (45.vii%).
• Nearly 2 in five non-Hispanic white women (39.eight%), more than half of non-Hispanic Black women (56.nine%), more than 1 in half dozen not-Hispanic Asian women (17.2%), and more than ii in five Hispanic women (43.7%), have obesity.

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Historic period-adjusted prevalence of severe obesity among adults ages 20 and over, by sexual practice, historic period, and race and Hispanic origin: United States, 2017–2018 ⁷

¹Significantly different from men.
²Significantly different from adults ages twenty–39.
³Significantly unlike from adults ages xl–59.
⁴Significantly different from all other race and Hispanic-origin groups.
NOTES: Estimates for adults ages 20 and over were age adapted by the direct method to the 2000 U.Due south. Census population using the historic period groups twenty–39, 40–59, and 60 and over. Crude estimates are ix.0% for total, 6.eight% for men, and eleven.1% for women. Access data table for Figure iii (PDF, 97.two KB) .
SOURCE: National Center for Health Statistics, National Health and Nutrition Examination Survey, 2017–2018. As shown in the higher up bar graph, men and women differ in their rates of obesity and astringent obesity.

• More than women (11.v%) than men (six.9%) have severe obesity.
• Severe obesity was highest amid people ages 40 to 59 (eleven.5%), followed by people ages 20 to 39 (nine.1%) and people ages 60 and older (5.8%).
• About 1 in xi non-Hispanic white adults (9.3%) have severe obesity.
• More than than 1 in 8 non-Hispanic Blackness adults (13.eight%) accept severe obesity.
• About one in 50 not-Hispanic Asian adults (ii.0%) have severe obesity.
• Most i in thirteen Hispanic adults (7.9%) have severe obesity.
• Severe obesity was highest among non-Hispanic Blackness adults (13.eight%), followed by non-Hispanic white adults (ix.3%), Hispanic adults (seven.9%), and non-Hispanic Asian adults (2.0%).

Youth

Prevalence of overweight, obesity, and severe obesity among children and adolescents ages 2 to 19 years: The states, 2017–2018 NHANES data ³

NOTE: Excludes pregnant females. Overweight is body mass index (BMI) at or to a higher place the 85th percentile and beneath the 95th percentile from the sexual practice-specific BMI-for-age 2000 CDC Growth Charts. Obesity is BMI at or above the 95th percentile. Severe obesity is BMI at or higher up 120% of the 95th percentile.
SOURCE: National Center for Health Statistics, National Wellness and Nutrition Examination Survey.
Graphic representation created by the NIDDK. According to the 2017–2018 NHANES data

• Among children and adolescents ages 2 to nineteen, nearly 1 in 6 (16.1%) are overweight, more 1 in 6 (19.3%) have obesity, and about 1 in 18 (6.1%) have severe obesity.

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Prevalence of obesity amongst children and adolescents ages 2 to nineteen years: Usa, 2017–2018 NHANES information ^three

Notation: Excludes pregnant females. Overweight is body mass index (BMI) at or above the 85th percentile and beneath the 95th percentile from the sex-specific BMI-for-age 2000 CDC Growth Charts.
SOURCE: National Eye for Health Statistics, National Health and Diet Exam Survey.
Graphic representation created by the NIDDK. According to the 2017–2018 NHANES data

• Among children ages 2 to five, more than i in 8 (13.4%) take obesity.
• Among children and youth ages 6 to 11, more than 1 in 5 (twenty.3%) have obesity.
• Among adolescents ages 12 to nineteen, more than than one in 5 (21.2%) accept obesity.

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Prevalence of obesity amidst children and adolescents ages ii to 19 years, past sexual activity and race and Hispanic origin: U.s.a., 2017–2018 NHANES data ³

NOTE: Excludes pregnant females. Obesity is trunk mass index (BMI) at or higher up the 95th percentile from the sex-specific BMI-for-historic period 2000 CDC Growth Charts.
* Gauge has a confidence interval width between 5 and 30 and a relative conviction interval width greater than 130%, and information technology does not see National Eye for Wellness Statistics (NCHS) standards of reliability; see Series Report 2, Number 175 (PDF, 1.6 MB) .
SOURCE: NCHS, National Wellness and Nutrition Examination Surveys, 1988–1994 and 1999–2018.
Graphic representation created by the NIDDK. According to the 2017–2018 NHANES information

• More than ane in 6 non-Hispanic white boys (17.4%) accept obesity and more than 1 in 7 non-Hispanic white girls (14.8%) have obesity.
• Nearly 1 in 5 not-Hispanic Black boys (19.4%) and more than than 2 in 7 non-Hispanic Black girls (29.1%) have obesity.
• About 1 in 8 non-Hispanic Asian boys (12.4%) and about 1 in xx non-Hispanic Asian girls (5.one%*) have obesity.
• About two in 7 Hispanic boys (28.i%) and almost 1 in 4 Hispanic girls (23.0%) have obesity.
• More 2 in vii Mexican American boys (29.2%) and 1 in 4 of Mexican American girls (24.9%) accept obesity.

* See asterisked notation in the figure above.

Trends in Obesity among Adults and Youth in the United States

Adults

Trends in age-adapted obesity and severe obesity prevalence amongst adults ages 20 and over: U.s., 1999–2000 through 2017–2018 ^vii

¹Meaning linear tendency.
NOTES: Estimates were age adjusted by the direct method to the 2000 U.S. Census population using the age groups 20–39, xl–59, and 60 and over. Admission information table for Figure 4 (PDF, 97.ii KB) .
SOURCE: National Centre for Health Statistics, National Health and Nutrition Test Survey, 1999–2018. As shown in the figure above

• The prevalence of obesity and severe obesity increased significantly amidst adult men and women betwixt 1999–2000 and 2017–2018.

Youth

Trends in obesity amid children and adolescents ages ii–19 years, by age: United states, 1963–1965 through 2017–2018 ³

Annotation: Obesity is defined as torso mass index (BMI) at or above the 95th percentile from the sex activity-specific BMI-for-historic period 2000 CDC Growth Charts.
SOURCES: National Center for Wellness Statistics, National Wellness Examination Surveys II (ages 6–11) and Iii (ages 12–17); and National Health and Nutrition Examination Surveys (NHANES) I–III, and NHANES 1999–2000, 2001–2002, 2003–2004, 2005–2006, 2007–2008, 2009–2010, 2011–2012, 2013–2014, 2015–2016, and 2017–2018.

As shown in the higher up line graph

• The prevalence of obesity among children and adolescents ages ii to 19 years roughly doubled between 1988–1994 and 2017–2018.
• Among children ages 2 to 5, the prevalence of obesity increased between 1988–1994 and 2003–2004, decreased between 2003–2004 and 2011–2012, and and then increased again.
• Among children ages 6 to 11, the prevalence of obesity increased between 1988–1994 and 2003–2004, fluctuated over the side by side several years, and most recently (2013–2014 to 2017–2018) increased.
• Amongst adolescents, ages 12 to xix, the prevalence of obesity has increased between 1988–1994 and 2017–2018.

References

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Source: https://www.niddk.nih.gov/health-information/health-statistics/overweight-obesity

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