Underweight among adults, BMI < 18.5 kg/m2 (crude estimate) in Tonga

Tonga: Underweight among adults, BMI < 18.5 kg/m2 (crude estimate) was 0.3% in 2024. ▼ Falling

Latest (2024)
0.3%
Change on year
up 2.8%
World rank
198th
of 198 countries
All-time high
0.7%
in 1980
All-time low
0.2%
in 2015
Years of data
45
1980–2024

Underweight among adults, BMI < 18.5 kg/m2 (crude estimate) in Tonga, 1980–2024

0.20.30.40.50.60.71980200220241980: 0.7351981: 0.7021982: 0.6721983: 0.6431984: 0.6181985: 0.5951986: 0.5731987: 0.5481988: 0.5211989: 0.4961990: 0.4741991: 0.4541992: 0.4371993: 0.4211994: 0.4071995: 0.3951996: 0.3831997: 0.371998: 0.3561999: 0.3422000: 0.3312001: 0.322002: 0.3092003: 0.3012004: 0.2932005: 0.2862006: 0.2792007: 0.2732008: 0.2682009: 0.2632010: 0.2592011: 0.2562012: 0.2542013: 0.2522014: 0.252015: 0.2492016: 0.252017: 0.2522018: 0.2552019: 0.2572020: 0.2612021: 0.2662022: 0.2722023: 0.2792024: 0.287

Source: World Health Organization, Global Health Observatory.

Analysis

The most recent figure for underweight among adults, bmi < 18.5 kg/m2 (crude estimate) in Tonga is 0.3%, measured in 2024.

The figure is up 2.8% on the previous year and up 14.4% over ten years.

Over the whole period, underweight among adults, bmi < 18.5 kg/m2 (crude estimate) in Tonga peaked at 0.7% in 1980 and was at its lowest, 0.2%, in 2015.

That places Tonga 198th out of 198 countries with data for 2024, putting it in the bottom quarter.

The long-run direction has been consistently falling across the 45 years of available data.

Underweight among adults, BMI < 18.5 kg/m2 (crude estimate) in Tonga, year by year

Annual values for Underweight among adults, BMI < 18.5 kg/m2 (crude estimate) (%) in Tonga, 1980 to 2024.
Year Value Change
1980 0.7%
1981 0.7% -4.5%
1982 0.7% -4.3%
1983 0.6% -4.2%
1984 0.6% -3.9%
1985 0.6% -3.7%
1986 0.6% -3.7%
1987 0.5% -4.4%
1988 0.5% -5.0%
1989 0.5% -4.7%
1990 0.5% -4.4%
1991 0.5% -4.2%
1992 0.4% -3.9%
1993 0.4% -3.6%
1994 0.4% -3.3%
1995 0.4% -3.1%
1996 0.4% -2.9%
1997 0.4% -3.4%
1998 0.4% -3.9%
1999 0.3% -3.7%
2000 0.3% -3.5%
2001 0.3% -3.3%
2002 0.3% -3.1%
2003 0.3% -2.9%
2004 0.3% -2.6%
2005 0.3% -2.4%
2006 0.3% -2.3%
2007 0.3% -2.1%
2008 0.3% -2.0%
2009 0.3% -1.8%
2010 0.3% -1.5%
2011 0.3% -1.2%
2012 0.3% -0.8%
2013 0.3% -0.7%
2014 0.3% -0.6%
2015 0.2% -0.4%
2016 0.3% +0.3%
2017 0.3% +0.9%
2018 0.3% +0.9%
2019 0.3% +0.9%
2020 0.3% +1.4%
2021 0.3% +2.0%
2022 0.3% +2.3%
2023 0.3% +2.5%
2024 0.3% +2.8%

Averages by decade

DecadeAverage LowestHighest Years
1980s 0.6% 0.5% 0.7% 10
1990s 0.4% 0.3% 0.5% 10
2000s 0.3% 0.3% 0.3% 10
2010s 0.3% 0.2% 0.3% 10
2020s 0.3% 0.3% 0.3% 5

Countries ranked near Tonga

  1. 195 Samoa 0.5% compare
  2. 196 American Samoa 0.4% compare
  3. 197 Naoero 0.3% compare

See the full ranking of 211 places →

More health data for Tonga

All data for Tonga →

Frequently asked questions

What is underweight among adults, bmi < 18.5 kg/m2 (crude estimate) in Tonga?
Underweight among adults, bmi < 18.5 kg/m2 (crude estimate) in Tonga was 0.3% in 2024, according to World Health Organization, Global Health Observatory.
What is the highest underweight among adults, bmi < 18.5 kg/m2 (crude estimate) recorded in Tonga?
The highest recorded value was 0.7% in 1980.
What is the lowest underweight among adults, bmi < 18.5 kg/m2 (crude estimate) recorded in Tonga?
The lowest recorded value was 0.2% in 2015.
How does Tonga rank for underweight among adults, bmi < 18.5 kg/m2 (crude estimate)?
Tonga ranks 198th out of 198 countries with data for 2024.
Is underweight among adults, bmi < 18.5 kg/m2 (crude estimate) rising or falling in Tonga?
Over the last ten years it is up 14.4%. The long-run trend across the full record is falling.
Where does this Tonga data come from?
The figures come from World Health Organization, Global Health Observatory, published as part of Underweight among adults, BMI < 18.5 kg/m2 (crude estimate) (%). Statizoid updates them automatically from the source API.

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Underweight among adults, BMI < 18.5 kg/m2 (crude estimate) in Tonga. Statizoid, drawing on World Health Organization, Global Health Observatory. Retrieved 06 September 2026, from https://health.statizoid.com/stat/underweight-among-adults-bmi-18-5-kg-m2-crude-estimate-percent/tonga/

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About this data

Indicator
Underweight among adults, BMI < 18.5 kg/m2 (crude estimate) (%)
Source
World Health Organization, Global Health Observatory
Licence
CC BY-NC-SA 3.0 IGO (WHO)
Coverage
211 places, 9,495 data points, 1980–2024
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