Every few years, survey teams from the Ministry of Health knock on doors across Malaysia, measure blood pressure, prick fingers for glucose and cholesterol, and ask people how they eat, move and smoke. The result, the National Health and Morbidity Survey (NHMS), is the most reliable picture of Malaysia health statistics we have. Its message is blunt: diabetes, high blood pressure, high cholesterol and excess weight are common among Malaysian adults, and a large share of people living with them do not know it.
Key takeaways
- The NHMS is run by the Institute for Public Health under the Ministry of Health, and is the main source of national data on non-communicable diseases (NCDs).
- NHMS 2019 estimated that around 1 in 5 Malaysian adults had diabetes, roughly half of them undiagnosed.
- About half of Malaysian adults were overweight or obese in NHMS 2019, and headline figures from NHMS 2023 suggest that share has not fallen.
- High blood pressure and high cholesterol are also common, and are often silent.
- The most useful Merdeka resolution may be the simplest: know your own numbers.
What is the National Health and Morbidity Survey?
The NHMS is a nationwide household survey conducted by the Institute for Public Health (Institut Kesihatan Umum), part of the National Institutes of Health under Malaysia's Ministry of Health. It has run since 1986 and now rotates themes, with some rounds focused on adult NCDs and health-care demand, and others on topics such as maternal and child health, adolescent health or older people.
What makes it valuable is that it does not just ask people whether they have a condition. Field teams take measurements, which is how the survey is able to estimate how many people have undiagnosed diabetes, high blood pressure or high cholesterol. That undiagnosed group is the part of the story that deserves the most attention.
A note on reading the numbers below: figures are rounded, methods can differ slightly between survey rounds, and the Institute for Public Health's own reports are the definitive source. Treat what follows as a readable summary, not a replacement for the reports themselves.
What do Malaysia's health statistics actually show?
Here are the headline adult figures from NHMS 2019, the most detailed recent round on NCDs, along with the broad direction reported in NHMS 2023.
| Indicator (adults 18+) | NHMS 2019 (approx.) | Direction in NHMS 2023 headline findings |
|---|---|---|
| Diabetes | 18.3%, around 3.9 million adults; about half undiagnosed | Reported at around 16%; still roughly 1 in 6 adults |
| High blood pressure | 30.0%, around 6.4 million adults | Broadly similar, just under 30% |
| High cholesterol | 38.1%, around 8.1 million adults | Reported lower, around one-third of adults |
| Overweight or obese | About 50% (overweight 30.4%, obese 19.7%) | Reported higher, above half of adults |
| Physically inactive | About 1 in 4 adults | Remains a concern |
| Not eating enough fruit and vegetables | About 95% of adults | Remains very common |
Two things stand out. First, these are not rare conditions affecting "other people". In an office of 20 colleagues, statistically several are likely to have raised blood pressure and at least one or two may have diabetes. Second, some small dips between rounds should be read cautiously; a change of a few percentage points is not the same as a problem solved.
Why is undiagnosed diabetes such a big deal?
Type 2 diabetes usually develops quietly over years. You can feel completely fine while high blood glucose slowly damages blood vessels, nerves, kidneys and eyes. The World Health Organization notes that diabetes is a major cause of blindness, kidney failure, heart attacks, stroke and lower-limb amputation, and that early diagnosis and treatment can delay or prevent many of these complications.
That is why the NHMS finding that roughly half of adults with diabetes were unaware of it is arguably the most important number in the survey. You cannot manage what you have not measured. We looked at one everyday piece of the puzzle, how our staple food affects glucose, in rice, carbs and blood sugar basics.
Why are blood pressure and cholesterol called silent?
Because they rarely cause symptoms until something serious happens. High blood pressure is a leading risk factor for stroke and heart disease worldwide, and the WHO estimates that many adults with hypertension globally are unaware they have it. High LDL cholesterol similarly builds up in artery walls over decades without any warning signs.
A few Malaysian habits make these numbers easy to understand. Salt hides in soy sauce, kicap, belacan, instant noodles, processed meats and many hawker gravies. The WHO recommends adults eat less than 5 g of salt a day, about one teaspoon, and national data suggests many Malaysians eat well above that. Deep-fried food and santan-rich dishes are delicious and fine in moderation, but they add up when they are daily.
What does the weight data mean for Asian bodies?
Malaysian clinical guidelines use lower BMI cut-offs than Western ones, because research shows Asian populations tend to develop diabetes and heart disease at lower body weights. For Asian adults, a BMI of 23 or above is generally classed as overweight and 27.5 or above as obese, rather than the 25 and 30 used in the West.
Waist circumference is often more telling than BMI because it reflects fat around the organs. Commonly used cut-offs for Asian adults are 90 cm or more for men and 80 cm or more for women. A tape measure costs less than a teh tarik, and it is one of the more useful numbers you can know about yourself.
What about how we eat and move?
The fruit and vegetable figure is striking: only a small minority of Malaysian adults meet the recommended intake. The Malaysian Healthy Plate, "suku-suku separuh", suggests half of each plate should be vegetables and fruit. Most nasi campur plates are nowhere close.
Sweetened drinks are another quiet contributor, as we calculated in how much sugar is in your teh tarik. On movement, the WHO recommends adults get 150 to 300 minutes of moderate activity a week, plus muscle-strengthening at least twice. In a hot, humid country with car-centric cities, that takes intention: an air-conditioned mall walk, a morning loop before the heat, or taking the MRT and walking the last stretch all count.
Is there any good news?
Yes. The same survey data that shows the problem also shows it is measurable and trackable, which is the first step to fixing it. Malaysia's government health clinics (klinik kesihatan) provide screening for blood pressure, glucose and cholesterol at low cost. Public health measures such as the sugar-sweetened beverage tax, introduced in 2019, and the growing availability of "kurang manis" options show how small environmental shifts can nudge habits. And every one of the risk factors above responds to changes in diet, activity, sleep and smoking.
Five numbers to know this Merdeka
Instead of a vague resolution, try a very specific one. Know these five numbers by Malaysia Day or year-end:
- Blood pressure. Under 120/80 mmHg is considered normal; 140/90 or above on repeated readings usually indicates hypertension.
- Fasting blood glucose or HbA1c. A simple blood test flags prediabetes or diabetes early.
- Cholesterol profile. Especially LDL, the "bad" cholesterol.
- Waist circumference. Measured at belly-button level, relaxed, after breathing out.
- Weekly active minutes. Aim to work up to 150.
If it has been more than a year since your last check, or you have never had one, a klinik kesihatan or GP visit is a genuinely patriotic act of self-care. A healthier population is a stronger one.
This article is general information, not medical advice, and the figures are rounded summaries of published survey results. For interpretation of your own results, talk to a doctor or pharmacist, especially if you are pregnant, on medication or managing a condition.
Frequently asked questions
What is the NHMS?
The National Health and Morbidity Survey is Malaysia's main national health survey, run by the Institute for Public Health under the Ministry of Health. It combines interviews with physical measurements such as blood pressure and blood glucose. Results are published on the Institute's website.
How common is diabetes in Malaysia?
NHMS 2019 estimated that around 18% of Malaysian adults, roughly 3.9 million people, had diabetes, and about half were undiagnosed. Headline findings from NHMS 2023 put the figure at around 16%. Either way, it is one of the highest rates in the region.
What BMI is considered overweight for Malaysians?
Malaysian guidelines use Asian cut-offs: a BMI of 23 or above is overweight and 27.5 or above is obese. Waist circumference of 90 cm or more for men and 80 cm or more for women also signals higher risk.
Where can I get a health screening in Malaysia?
Government health clinics (klinik kesihatan) offer screening for blood pressure, glucose and cholesterol, as do private GPs, hospitals and many pharmacies. The Ministry of Health's MyHEALTH portal has general guidance on screening and NCDs.
How often should adults check blood pressure and blood sugar?
Many adults are advised to check blood pressure at least once a year, and to screen glucose and cholesterol periodically, more often if they are overweight, over 40 or have a family history. Your doctor can advise a schedule based on your risk.
Sources
- Institute for Public Health (Institut Kesihatan Umum), Ministry of Health Malaysia: National Health and Morbidity Survey reports
- Ministry of Health Malaysia
- MyHEALTH portal, Ministry of Health Malaysia
- World Health Organization: Diabetes fact sheet
- World Health Organization: Hypertension fact sheet
- World Health Organization: Salt reduction fact sheet
- World Health Organization: Physical activity fact sheet
