Obesity in Singapore rose significantly. Diabetes did not. Those two facts sit next to each other in the same national survey, and reversing them is the most common error in Singapore health writing — it turns a story about weight into a story about a disease Singapore has actually held steady. This article states the national figures with their definitions, populations and dates attached, because almost every problem with these numbers comes from quoting one without the other three.
Age-standardised prevalence: a figure adjusted so that a change in the population's age structure cannot masquerade as a change in health. Singapore's crude diabetes prevalence was 9.1% in 2023-2024; the age-standardised figure was 8.8%, down from 9.5%.
Who the figures describe, and when they were measured
Singapore residents aged 18 to 74 — not all Singaporeans, not children, not the very old, and not any individual reader.
The source is the National Population Health Survey 2024, published by the Ministry of Health and the Health Promotion Board in October 2025. Inside it, two kinds of finding carry two different dates. Household-interview findings, which include the physical-activity figures, are annual and are reported for 2024. Health-examination findings, which include obesity, waist circumference and diabetes, are aggregated across the 2023 and 2024 surveys and are labelled "2023-2024" (NPHS 2024).
So the sentence "in 2024, 12.7% of Singaporeans were obese" is wrong twice over: wrong on the period, which is a two-year pool, and wrong on the population, which is residents aged 18 to 74. Getting that right costs one clause and is the difference between quoting the survey and paraphrasing a headline about it.
Obesity: 12.7% and 22.8% are two different numbers
They measure different thresholds and they are constantly swapped.
12.7% is the proportion of residents aged 18 to 74 with a BMI at or above 30.0 kg/m², the WHO international obesity cut-off — "about one in eight", in the report's own words. Males 13.1%, females 12.3%, highest at ages 30 to 39 at 14.9%. Both the crude and the age-standardised prevalence rose significantly, from 10.5% in 2019-2020 to 12.7% in 2023-2024. The full weight-status distribution for 2023-2024 runs: underweight 6.4%, normal 53.6%, overweight 27.4%, obese 12.7% (NPHS 2024).
22.8% is a different measurement entirely: the proportion in the Asian high-risk band at BMI 27.5 or above. Males 25.4%, females 20.3%, up from 20.7% in 2019-2020 — a change the report itself describes as largely stable. The report reproduces the WHO Asian risk bands verbatim: low risk 18.5–22.9, moderate risk 23.0–27.4, high risk 27.5 and above (NPHS 2024).
Singapore runs both scales deliberately. Its own obesity guidelines classify overweight from a BMI of 23 and obese from 27.5 for the local population (HPB–MOH obesity guidelines, 2016), and that lower set of action points traces to a WHO expert consultation which concluded that risk rises in Asian populations at BMI levels below the standard overweight threshold. Note what that consultation actually did: it retained the international classification and added public-health action points at 23.0, 27.5, 32.5 and 37.5 (WHO Expert Consultation, 2004). It did not lower or redefine the international cut-offs, and saying it did is a separate common error. Asian BMI thresholds covers the science behind the two scales in full.
The practical consequence: 12.7% and 22.8% are both correct, they answer different questions, and a piece of writing that quotes one figure while implying the other's definition has misreported the survey.
Waist circumference, which nobody quotes
Abdominal obesity — a waist above 90 cm in men or above 80 cm in women — stood at 43.6% of residents aged 18 to 74 in 2023-2024: 44.6% of women, 42.6% of men, rising to 54.2% at ages 60 to 74. The report describes it as stable against 40.6% in 2019-2020 (NPHS 2024).
That figure is roughly three and a half times the obesity figure and it is almost absent from public discussion, largely because BMI is the number people know. Waist circumference is one of the two measures Singapore's obesity guidelines run on (HPB–MOH obesity guidelines, 2016).
Diabetes did not rise
This is the correction that matters most, because the reverse is asserted constantly.
Diabetes prevalence was 9.1% in 2023-2024 (males 10.5%, females 7.8%). MOH's report states it "remained stable" against 9.5% in 2019-2020, and the age-standardised prevalence fell, from 9.5% to 8.8%. By age band: 1.8% at 30 to 39, 5.4% at 40 to 49, 12.9% at 50 to 59, 21.9% at 60 to 69 and 22.0% at 70 to 74 (NPHS 2024).
The definition matters as much as the number. The survey's diabetes figure is a composite of self-reported doctor-diagnosed diabetes on medication plus cases detected at the health examination, using WHO 2006 criteria — a single reading of fasting plasma glucose at or above 7.0 mmol/l. It is not an HbA1c-based figure, and it is not a clinical diagnosis of any individual (NPHS 2024).
MOH's own framing of the survey is worth reproducing accurately too, because it is more measured than the coverage of it. The press release records that the proportion of obese residents "increased significantly from 10.5% in 2019-2020 to 12.7% in 2023-2024", that diabetes prevalence remained stable, that sufficient total physical activity rose from 78.5% to 84.7%, and that daily smoking fell to an all-time low of 8.4% in 2024. The Ministry describes rising obesity as a concern set against improvement elsewhere (MOH press release, 2025).
One figure the survey does not publish
Prediabetes.
It is not among the indicators reported in the National Population Health Survey 2024, and the prediabetes prevalence figures that circulate in commercial health content could not be traced back to any primary Ministry of Health source. There is no current official Singapore number for it, which is worth knowing before quoting one — and worth noticing when a figure turns up in an article that cites no document at all.
A quieter point sits alongside it. Because the survey's diabetes figure rests on a single fasting plasma glucose reading rather than a repeat test or an HbA1c, it is a prevalence estimate for a population and not a diagnosis for anyone counted in it.
The "one million by 2050" figure is not a Ministry forecast
It appears in MOH documents, which is why people attribute it to MOH. The footnote says otherwise.
MOH's War on Diabetes summary report reproduces the projection in its foreword — "If nothing is done, the number of Singaporeans living with diabetes is projected to reach one million by 2050" — and footnotes it, verbatim, as "Based on a 2014 study by Saw Swee Hock School of Public Health, National University of Singapore" (MOH War on Diabetes report, 2019). A 2017 MOH newsroom item states the same projection with its own qualifier, "if current trends continue", alongside a headcount of "over 400,000 Singaporeans living with the disease" (MOH 2017).
Three things follow. It is an academic projection that MOH cites, not an MOH forecast, and it should be attributed that way or left out. The arithmetic behind the one-million headcount could not be traced to a published paper. And the 400,000 figure is from 2017 and is now nine years old — it is a headcount, while the current national figure is a percentage of residents aged 18 to 74, so the two are not comparable without conversion nobody has published.
What a national statistic can tell one person
Very little, and that is worth saying directly.
Prevalence describes a population. It carries no information about an individual's risk, and turning "one in eight adults is obese" into a statement about a reader is a category error. What the figures are genuinely useful for is calibration: they show that the indicator moving in the wrong direction is weight rather than blood sugar, that closer to a quarter of adults sit in the Asian high-risk BMI band, and that more than four in ten carry a high-risk waist.
They also show where the behavioural gap sits. In 2024, 84.7% of residents aged 18 to 74 had sufficient total physical activity while 35.7% reported sufficient muscle-strengthening activity (NPHS 2024) — figures that supersede the 76.4% and 33.8% from the 2020 survey, which are still widely reproduced from the 2022 national activity guidebook (SPAG 2022). Say which survey year you mean.
At GetLean, our philosophy is that GLP-1 medication should act as a catalyst rather than something to depend on indefinitely, and what these numbers say about that is narrow: weight rose, and the half of the national activity guideline that protects muscle is the half most adults are not doing. Walking is not enough covers what follows from that.
Where the national picture stops, the condition-level evidence starts. Weight-related conditions sets out what losing weight has been shown to do about each of the conditions behind these numbers, and prediabetes and body weight covers the local eight-year follow-up in which more people reverted to normal glucose than progressed to diabetes.
This article reports national statistics as education. Individual results vary, no figure here describes any reader, and anyone wanting to know where they personally stand should be assessed by a doctor.
Common questions
What percentage of Singaporeans are obese?
About one in eight — 12.7% of Singapore residents aged 18 to 74 in 2023-2024, using the international BMI threshold of 30.0 kg/m². That is a significant rise from 10.5% in 2019-2020. A separate 22.8% sat above the Asian high-risk BMI threshold of 27.5 (NPHS 2024). The figure applies to residents aged 18 to 74, not to all Singaporeans and not to any individual.
Is diabetes rising in Singapore?
Not according to the most recent national survey. Diabetes prevalence was 9.1% in 2023-2024 against 9.5% in 2019-2020, which the report describes as having remained stable, and the age-standardised figure fell from 9.5% to 8.8% (NPHS 2024). Obesity is the indicator that rose significantly over the same period. Getting these two the wrong way round inverts the story the data tells.
Why do you see both 12.7% and 22.8% quoted for obesity in Singapore?
Because two BMI scales run at the same time and the survey publishes both. 12.7% is the proportion at or above the international obesity threshold of BMI 30.0; 22.8% is the proportion in the Asian high-risk band at BMI 27.5 or above (NPHS 2024). Singapore's own obesity guidelines classify overweight from 23 and obese from 27.5 for the local population (HPB–MOH obesity guidelines, 2016). They answer different questions and are not interchangeable.
Where does the figure of one million Singaporeans with diabetes by 2050 come from?
Not from a Ministry of Health forecast. MOH's own War on Diabetes report reproduces the projection and footnotes it, verbatim, as "Based on a 2014 study by Saw Swee Hock School of Public Health, National University of Singapore" (MOH War on Diabetes report, 2019). MOH also stated it in a 2017 newsroom item, qualified as a projection if current trends continue (MOH 2017). It is an academic projection that MOH cites, and the arithmetic behind the headcount could not be traced to a published paper.
What years do Singapore's obesity and diabetes figures cover?
Not a single year. The obesity and diabetes prevalences come from a health examination aggregated across the 2023 and 2024 surveys and are labelled 2023-2024, while the physical-activity figures are 2024 interview data, and the report itself was published in October 2025 (NPHS 2024). Writing that 12.7% of Singaporeans were obese in 2024 is wrong on the year and on the population, which is residents aged 18 to 74.