Prevalence of underweight among adults, BMI < 18.5 in United States of America

United States of America: Prevalence of underweight among adults, BMI < 18.5 was 1.73 in 2022. ▼ Falling

Latest (2022)
1.73
Change on year
up 1.2%
World rank
156th
of 193 countries
All-time high
2.27
in 1990
All-time low
1.62
in 2007
Years of data
33
1990–2022

Prevalence of underweight among adults, BMI < 18.5 in United States of America, 1990–2022

00.511.522.51990200620221990: 2.31991: 2.21992: 2.11993: 21994: 1.91995: 1.91996: 1.81997: 1.81998: 1.71999: 1.72000: 1.72001: 1.72002: 1.72003: 1.62004: 1.62005: 1.62006: 1.62007: 1.62008: 1.62009: 1.62010: 1.62011: 1.62012: 1.62013: 1.62014: 1.62015: 1.62016: 1.62017: 1.62018: 1.72019: 1.72020: 1.72021: 1.72022: 1.7

Source: UNICEF.

Analysis

The most recent figure for prevalence of underweight among adults, bmi < 18.5 in United States of America is 1.73, measured in 2022.

Compared with earlier readings it is up 1.2% on the previous year and up 6.8% over ten years.

Over the whole period, prevalence of underweight among adults, bmi < 18.5 in United States of America peaked at 2.27 in 1990 and was at its lowest, 1.62, in 2007.

That places United States of America 156th out of 193 countries with data for 2022, putting it in the bottom quarter.

The long-run direction has been consistently falling across the 33 years of available data.

Prevalence of underweight among adults, BMI < 18.5 in United States of America, year by year

Annual values for Prevalence of underweight among adults, BMI < 18.5 (Crude estimate) in United States of America, 1990 to 2022.
Year Value Change
1990 2.27
1991 2.17 -4.4%
1992 2.07 -4.6%
1993 1.99 -3.9%
1994 1.92 -3.5%
1995 1.86 -3.1%
1996 1.8 -3.2%
1997 1.76 -2.2%
1998 1.73 -1.7%
1999 1.7 -1.7%
2000 1.68 -1.2%
2001 1.67 -0.6%
2002 1.66 -0.6%
2003 1.65 -0.6%
2004 1.64 -0.6%
2005 1.63 -0.6%
2006 1.63 +0.0%
2007 1.62 -0.6%
2008 1.62 +0.0%
2009 1.62 +0.0%
2010 1.62 +0.0%
2011 1.62 +0.0%
2012 1.62 +0.0%
2013 1.63 +0.6%
2014 1.63 +0.0%
2015 1.63 +0.0%
2016 1.64 +0.6%
2017 1.65 +0.6%
2018 1.66 +0.6%
2019 1.67 +0.6%
2020 1.68 +0.6%
2021 1.71 +1.8%
2022 1.73 +1.2%

United States of America compared with similar countries

  • United States of America's 1.73 is below the median for high income countries, which is 1.89, 92% of the median. (61 countries reporting)

Averages by decade

DecadeAverage LowestHighest Years
1990s 1.93 1.7 2.27 10
2000s 1.64 1.62 1.68 10
2010s 1.64 1.62 1.67 10
2020s 1.71 1.68 1.73 3

Countries ranked near United States of America

  1. 153 Iceland 1.75 compare
  2. 153 Canada 1.75 compare
  3. 155 Bolivia, Plurinational State of 1.74 compare
  4. 157 Marshall Islands 1.72 compare
  5. 158 United Kingdom of Great Britain and Northern Ireland 1.71 compare
  6. 159 Montenegro 1.67 compare

See the full ranking of 349 places →

More health data for United States of America

All data for United States of America →

Frequently asked questions

What is prevalence of underweight among adults, bmi < 18.5 in United States of America?
Prevalence of underweight among adults, bmi < 18.5 in United States of America was 1.73 in 2022, according to UNICEF.
What is the highest prevalence of underweight among adults, bmi < 18.5 recorded in United States of America?
The highest recorded value was 2.27 in 1990.
What is the lowest prevalence of underweight among adults, bmi < 18.5 recorded in United States of America?
The lowest recorded value was 1.62 in 2007.
How does United States of America rank for prevalence of underweight among adults, bmi < 18.5?
United States of America ranks 156th out of 193 countries with data for 2022.
Is prevalence of underweight among adults, bmi < 18.5 rising or falling in United States of America?
Over the last ten years it is up 6.8%. The long-run trend across the full record is falling.
Where does this United States of America data come from?
The figures come from UNICEF, published as part of Prevalence of underweight among adults, BMI < 18.5 (Crude estimate). Statizoid updates them automatically from the source API.

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Prevalence of underweight among adults, BMI < 18.5 in United States of America. Statizoid, drawing on UNICEF. Retrieved 13 September 2026, from https://health.statizoid.com/stat/prevalence-of-underweight-among-adults-bmi-18-5-crude-estimate/united-states/

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About this data

Indicator
Prevalence of underweight among adults, BMI < 18.5 (Crude estimate)
Source
UNICEF
Licence
UNICEF Terms of Use (attribution required)
Coverage
349 places, 9,955 data points, 1990–2022
Last refreshed