Prevalence of underweight among adults, BMI < 18.5 in South America (UNSDG)

South America (UNSDG): Prevalence of underweight among adults, BMI < 18.5 was 2.37 in 2022. ▼ Falling

Latest (2022)
2.37
Change on year
down 1.8%
Rank
128th
of 156 groups
All-time high
3.83
in 2000
All-time low
2.37
in 2022
Years of data
23
2000–2022

Prevalence of underweight among adults, BMI < 18.5 in South America (UNSDG), 2000–2022

012342000201120222000: 3.82001: 3.72002: 3.62003: 3.52004: 3.42005: 3.42006: 3.32007: 3.22008: 3.12009: 3.12010: 32011: 2.92012: 2.92013: 2.82014: 2.72015: 2.72016: 2.72017: 2.62018: 2.62019: 2.52020: 2.52021: 2.42022: 2.4

Source: UNICEF.

Analysis

The most recent figure for prevalence of underweight among adults, bmi < 18.5 in South America (UNSDG) is 2.37, measured in 2022. That is the lowest value across all 23 years on record.

The figure is down 1.8% on the previous year and down 16.8% over ten years.

Over the whole period, prevalence of underweight among adults, bmi < 18.5 in South America (UNSDG) peaked at 3.83 in 2000 and was at its lowest, 2.37, in 2022.

That places South America (UNSDG) 128th out of 156 groups with data for 2022, putting it in the bottom quarter.

The long-run direction has been consistently falling across the 23 years of available data.

Prevalence of underweight among adults, BMI < 18.5 in South America (UNSDG), year by year

Annual values for Prevalence of underweight among adults, BMI < 18.5 (Crude estimate) in South America (UNSDG), 2000 to 2022.
Year Value Change
2000 3.83
2001 3.73 -2.6%
2002 3.6 -3.4%
2003 3.5 -2.8%
2004 3.42 -2.2%
2005 3.35 -2.2%
2006 3.27 -2.5%
2007 3.2 -2.1%
2008 3.11 -2.7%
2009 3.06 -1.8%
2010 2.98 -2.4%
2011 2.91 -2.3%
2012 2.85 -2.1%
2013 2.79 -2.1%
2014 2.72 -2.6%
2015 2.68 -1.7%
2016 2.67 -0.3%
2017 2.6 -2.4%
2018 2.55 -1.9%
2019 2.49 -2.6%
2020 2.47 -0.6%
2021 2.42 -2.3%
2022 2.37 -1.8%

Averages by decade

DecadeAverage LowestHighest Years
2000s 3.41 3.06 3.83 10
2010s 2.73 2.49 2.98 10
2020s 2.42 2.37 2.47 3

Countries ranked near South America (UNSDG)

  1. 125 Lebanon 2.37 compare
  2. 125 Vanuatu 2.37 compare
  3. 127 Belize 2.34 compare
  4. 128 Azerbaijan 2.31 compare
  5. 129 Romania 2.3 compare
  6. 129 Georgia 2.3 compare
  7. 131 North Macedonia 2.29 compare

See the full ranking of 349 places →

More health data for South America (UNSDG)

All data for South America (UNSDG) →

Frequently asked questions

What is prevalence of underweight among adults, bmi < 18.5 in South America (UNSDG)?
Prevalence of underweight among adults, bmi < 18.5 in South America (UNSDG) was 2.37 in 2022, according to UNICEF.
What is the highest prevalence of underweight among adults, bmi < 18.5 recorded in South America (UNSDG)?
The highest recorded value was 3.83 in 2000.
What is the lowest prevalence of underweight among adults, bmi < 18.5 recorded in South America (UNSDG)?
The lowest recorded value was 2.37 in 2022.
How does South America (UNSDG) rank for prevalence of underweight among adults, bmi < 18.5?
South America (UNSDG) ranks 128th out of 156 groups with data for 2022.
Is prevalence of underweight among adults, bmi < 18.5 rising or falling in South America (UNSDG)?
Over the last ten years it is down 16.8%. The long-run trend across the full record is falling.
Where does this South America (UNSDG) 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 South America (UNSDG). Statizoid, drawing on UNICEF. Retrieved 13 September 2026, from https://health.statizoid.com/stat/prevalence-of-underweight-among-adults-bmi-18-5-crude-estimate/south-america-unsdg/

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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