What to Know About Insulin Resistance in Singapore Before It Becomes Diabetes
- 23 hours ago
- 5 min read
Clinical insight from Dr Tay Tunn Lin of Cedar Endocrine Clinic. Watch her full interview on FindClinic.sg.
It often starts with small changes that are easy to dismiss. You feel a little more tired in the afternoons. Your waistline has crept up despite eating the same way you always have. The mid-morning hunger feels sharper than before. A blood test result that used to read "normal" now reads "slightly elevated".
You assume it is just age, stress, or a busier period at work. You hope a few salads and gym sessions will sort it out. And maybe they will. But for some people, these small changes are early signals of something more specific.
If you have been searching for answers about insulin resistance in Singapore, you are looking ahead at the right time. Insulin resistance is one of the most common stepping stones to Type 2 diabetes, and yet it often goes unnoticed for years before symptoms appear.
At Cedar Endocrine Clinic located in Mount Elizabeth Medical Centre and Mount Alvernia Hospital, Dr Tay Tunn Lin sees patients across the full diabetes journey, including those who want to understand and act on early metabolic changes before they progress.
What is insulin resistance?
Insulin is a hormone produced by the pancreas. Its main job is to help glucose (sugar) from the food you eat move from your bloodstream into your cells, where it can be used for energy.
When the body becomes less responsive to insulin, the pancreas has to produce more of it to keep blood sugar at normal levels. This state is known as insulin resistance.
In the early stages, blood sugar levels can still appear normal because the pancreas is working harder behind the scenes. Over time, this extra effort can wear down. Blood sugar levels start to creep up, eventually crossing into the range of pre-diabetes, and then Type 2 diabetes if left unaddressed.
Insulin resistance can quietly be present for years before any abnormal blood test result appears.
Common signs of insulin resistance
Insulin resistance does not always produce obvious symptoms. When signs do appear, they are often subtle and easy to attribute to ageing or lifestyle.
Common patterns include:
Weight gain around the abdomen, even without major lifestyle change
Fatigue, particularly after meals
Strong cravings for carbohydrates or sweet foods
Difficulty losing weight despite consistent effort
Darkened patches of skin on the neck, armpits, or groin (acanthosis nigricans)
Skin tags, particularly around the neck and armpits
Irregular menstrual cycles in women, sometimes linked to polycystic ovary syndrome (PCOS)
Brain fog or difficulty concentrating
High blood pressure or rising cholesterol levels
These signs do not confirm insulin resistance on their own. They are clues that a proper assessment may be worth considering.
Who is at higher risk for insulin resistance?
Some people are more likely to develop insulin resistance than others. Common risk factors include:
Carrying excess weight, particularly around the abdomen
A family history of Type 2 diabetes
Being of Asian descent, where insulin resistance often appears at lower body weight than in Western populations
Sedentary lifestyle with limited physical activity
Diet high in refined carbohydrates and processed foods
Polycystic ovary syndrome (PCOS) in women
Sleep apnea or chronic poor sleep
Certain medications including some steroids and antipsychotics
Ageing, particularly after 40
Asian populations are particularly relevant in Singapore. Studies suggest insulin resistance can develop at a lower body mass index in Asian patients than in Western populations, which is one reason early screening matters even for people who do not look overweight.
How insulin resistance is diagnosed
There is no single blood test that confirms insulin resistance directly. Diagnosis usually involves looking at a combination of factors, including:
Fasting blood glucose, which measures blood sugar after an overnight fast
HbA1c, which reflects average blood sugar over the past 2 to 3 months
Fasting insulin levels, which can suggest how hard the pancreas is working
Oral glucose tolerance test (OGTT) in some cases
Lipid profile and blood pressure assessment
Clinical examination including waist measurement and skin signs
An endocrinologist can interpret these results in context, looking at patterns rather than any single number.
What you can do about insulin resistance
The encouraging part of insulin resistance is that, especially in the early stages, it often responds well to consistent changes.
Common approaches include:
Increasing daily movement, especially activities like walking after meals
Building muscle through resistance training, which improves how cells respond to insulin
Adjusting carbohydrate quality, focusing on whole foods rather than refined options
Sleeping well, since poor sleep worsens insulin resistance
Managing stress, which influences blood sugar through hormonal pathways
Medical treatment in select cases, including medications that improve insulin sensitivity
Treating linked conditions such as PCOS, sleep apnea, or thyroid disorders
For many patients, sustained lifestyle changes alone can meaningfully improve insulin sensitivity. For others, a combined approach with medical support gives the best outcomes.
When to see an endocrinologist about insulin resistance
You may want to consider a consultation if:
A blood test has shown elevated fasting glucose or HbA1c
You have signs of insulin resistance alongside weight changes
You have a family history of Type 2 diabetes
You have PCOS, sleep apnea, or other linked conditions
Lifestyle changes have not improved your results
You want a clearer picture of your metabolic health before symptoms develop
An endocrinologist can interpret blood tests in context, identify hidden patterns, and help you build a plan that fits your situation.
Frequently Asked Questions
What are the early signs of insulin resistance?
Early signs can include weight gain around the abdomen, fatigue after meals, strong carbohydrate cravings, and skin changes such as dark patches on the neck. These signs are often subtle and easy to miss.
How is insulin resistance diagnosed?
Diagnosis usually involves blood tests such as fasting glucose, HbA1c, and sometimes fasting insulin, alongside a clinical assessment of weight, blood pressure, and other risk factors. An endocrinologist can interpret the full picture.
Can insulin resistance be reversed?
In many cases, particularly when caught early, insulin resistance can be significantly improved through sustained lifestyle changes. Some patients also benefit from medical treatment. Reversal is not guaranteed for everyone, but meaningful improvement is realistic for most.
Does insulin resistance always lead to diabetes?
Not always. Many people with insulin resistance never progress to Type 2 diabetes, particularly when they take early action. Without intervention, however, the risk of progression is higher.
Can you have insulin resistance without being overweight?
Yes. Insulin resistance can occur at a normal body weight, especially in Asian populations. Body composition, fat distribution, and genetics all play a role.
How is insulin resistance different from diabetes?
Insulin resistance is an early metabolic change where the body's cells respond less effectively to insulin, but blood sugar may still be normal. Diabetes is diagnosed when blood sugar levels cross a defined threshold. Insulin resistance often precedes diabetes by years.
Meet Dr Tay Tunn Lin
The earlier insulin resistance is recognised, the more options you have. Acting on small signals now can make a real difference to your long-term health.
Dr Tay Tunn Lin is a Senior Consultant Endocrinologist at Cedar Endocrine Clinic, with practices at Mount Elizabeth Medical Centre and Mount Alvernia Hospital. With particular expertise in diabetes, obesity, and thyroid care, her approach is grounded in personalised treatment plans that respect your individual goals and lifestyle.
Dr Tay is also featured on FindClinic.sg, Singapore's healthcare editorial discovery platform that connects patients with verified specialist doctors through profiles, articles, and video interviews.
You can:
Read Dr Tay Tunn Lin's full profile and video interview on FindClinic.sg
Learn more about FindClinic.sg, Singapore’s healthcare editorial discovery platform.
When you are ready
A consultation is a conversation. You bring your questions, your blood test results if you have them, and the changes you have noticed. Dr Tay brings the time, expertise, and personalised perspective to help you understand what is happening and what your options look like.
To book a consultation with Dr Tay Tunn Lin at Cedar Endocrine Clinic, call +65 6370 7660 or WhatsApp +65 8900 1620.