Underweight among adults, BMI < 18.5 kg/m2 (age-standardized estimate) in Tonga

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

Latest (2024)
0.3%
Change on year
up 1.6%
World rank
198th
of 198 countries
All-time high
0.9%
in 1980
All-time low
0.2%
in 2017
Years of data
45
1980–2024

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

0.20.40.60.811980200220241980: 0.941981: 0.891982: 0.8431983: 0.7991984: 0.7571985: 0.7171986: 0.6811987: 0.6471988: 0.6151989: 0.5851990: 0.5571991: 0.5311992: 0.5061993: 0.4841994: 0.4631995: 0.4431996: 0.4251997: 0.4071998: 0.391999: 0.3742000: 0.362001: 0.3462002: 0.3342003: 0.3222004: 0.3122005: 0.3022006: 0.2942007: 0.2862008: 0.2792009: 0.2732010: 0.2682011: 0.2632012: 0.2592013: 0.2552014: 0.2532015: 0.252016: 0.2492017: 0.2492018: 0.2492019: 0.252020: 0.2522021: 0.2542022: 0.2572023: 0.262024: 0.264

Source: World Health Organization, Global Health Observatory.

Analysis

In 2024, underweight among adults, bmi < 18.5 kg/m2 (age-standardized estimate) in Tonga stood at 0.3%.

That represents a change of up 1.6% on the previous year and up 4.6% over ten years.

Over the whole period, underweight among adults, bmi < 18.5 kg/m2 (age-standardized estimate) in Tonga peaked at 0.9% in 1980 and was at its lowest, 0.2%, in 2017.

Tonga ranks 198th of 198 countries on this measure, 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 (age-standardized estimate) in Tonga, year by year

Annual values for Underweight among adults, BMI < 18.5 kg/m2 (age-standardized estimate) (%) in Tonga, 1980 to 2024.
Year Value Change
1980 0.9%
1981 0.9% -5.3%
1982 0.8% -5.3%
1983 0.8% -5.3%
1984 0.8% -5.3%
1985 0.7% -5.2%
1986 0.7% -5.1%
1987 0.6% -5.0%
1988 0.6% -4.9%
1989 0.6% -4.8%
1990 0.6% -4.8%
1991 0.5% -4.7%
1992 0.5% -4.6%
1993 0.5% -4.4%
1994 0.5% -4.3%
1995 0.4% -4.2%
1996 0.4% -4.2%
1997 0.4% -4.2%
1998 0.4% -4.2%
1999 0.4% -4.1%
2000 0.4% -3.8%
2001 0.3% -3.7%
2002 0.3% -3.6%
2003 0.3% -3.4%
2004 0.3% -3.3%
2005 0.3% -3.0%
2006 0.3% -2.8%
2007 0.3% -2.6%
2008 0.3% -2.4%
2009 0.3% -2.2%
2010 0.3% -2.0%
2011 0.3% -1.8%
2012 0.3% -1.6%
2013 0.3% -1.3%
2014 0.3% -1.0%
2015 0.3% -0.8%
2016 0.2% -0.6%
2017 0.2% -0.1%
2018 0.2% +0.2%
2019 0.3% +0.4%
2020 0.3% +0.7%
2021 0.3% +0.9%
2022 0.3% +1.0%
2023 0.3% +1.3%
2024 0.3% +1.6%

Averages by decade

DecadeAverage LowestHighest Years
1980s 0.7% 0.6% 0.9% 10
1990s 0.5% 0.4% 0.6% 10
2000s 0.3% 0.3% 0.4% 10
2010s 0.3% 0.2% 0.3% 10
2020s 0.3% 0.3% 0.3% 5

Countries ranked near Tonga

  1. 195 Cook Islands 0.5% compare
  2. 196 Naoero 0.4% compare
  3. 197 American Samoa 0.4% 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 (age-standardized estimate) in Tonga?
Underweight among adults, bmi < 18.5 kg/m2 (age-standardized 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 (age-standardized estimate) recorded in Tonga?
The highest recorded value was 0.9% in 1980.
What is the lowest underweight among adults, bmi < 18.5 kg/m2 (age-standardized estimate) recorded in Tonga?
The lowest recorded value was 0.2% in 2017.
How does Tonga rank for underweight among adults, bmi < 18.5 kg/m2 (age-standardized estimate)?
Tonga ranks 198th out of 198 countries with data for 2024.
Is underweight among adults, bmi < 18.5 kg/m2 (age-standardized estimate) rising or falling in Tonga?
Over the last ten years it is up 4.6%. 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 (age-standardized estimate) (%). Statizoid updates them automatically from the source API.

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Underweight among adults, BMI < 18.5 kg/m2 (age-standardized estimate) in Tonga. Statizoid, drawing on World Health Organization, Global Health Observatory. Retrieved 03 September 2026, from https://health.statizoid.com/stat/underweight-among-adults-bmi-18-5-kg-m2-age-standardized-estimate-percent/tonga/

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About this data

Indicator
Underweight among adults, BMI < 18.5 kg/m2 (age-standardized 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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