What doctor should I see for hypothyroidism in Singapore?

Hypothyroidism is commonly managed by an endocrinologist, especially when diagnosis is unclear, symptoms persist, medication adjustment is difficult, or pregnancy is involved. Some mild or stable cases may also be monitored by a primary care doctor.

Is hypothyroidism the same as an underactive thyroid?

Yes. Hypothyroidism is also called an underactive thyroid. It means the thyroid gland is not producing enough thyroid hormone for the body's needs.

What blood tests are used to diagnose hypothyroidism?

The main tests are TSH and free T4. In some cases, thyroid antibody tests may also be recommended to check for autoimmune thyroid disease such as Hashimoto's thyroiditis.

Can hypothyroidism cause weight gain?

Yes, hypothyroidism may contribute to weight gain or difficulty losing weight. However, weight changes can also be caused by diet, activity level, sleep, menopause, medication and other health conditions.

Is Hashimoto's thyroiditis the same as hypothyroidism?

Not exactly. Hashimoto's thyroiditis is an autoimmune condition that can lead to hypothyroidism. A person can have Hashimoto's before thyroid hormone levels become low.

Do I need to take thyroid medication for life?

Some patients need long-term thyroid hormone replacement, especially if hypothyroidism is permanent. Others may have temporary thyroid changes. Your doctor can advise based on the cause, blood test results and follow-up pattern.

How often should thyroid levels be checked?

Monitoring frequency depends on your condition. Testing may be more frequent when treatment starts, after dose changes, during pregnancy, or when symptoms change. Stable patients may need less frequent monitoring, based on medical advice.

Can hypothyroidism affect pregnancy?

Yes. Thyroid hormone levels are important during pregnancy. Women who are pregnant, planning pregnancy, or undergoing fertility treatment should seek medical advice if they have known thyroid disease or abnormal thyroid blood test results.

Can supplements interfere with thyroid medication?

Some supplements and medicines can affect levothyroxine absorption, including calcium and iron. Ask your doctor or pharmacist how to time your medication safely.

What happens if hypothyroidism remains untreated?

If left untreated, hypothyroidism can lead to complications such as heart problems, mental health issues and peripheral neuropathy. In severe cases it may lead to myxoedema, a rare but life-threatening condition requiring immediate medical attention.

Insulin Resistance: Symptoms, Causes and Specialist Treatment in Singapore

Specialist-led assessment and management of insulin resistance in Singapore, from detailed metabolic testing that goes beyond a single fasting glucose result to an individualised plan, under Senior Consultant Endocrinologists at Mount Elizabeth Novena.

Dr. Ben Ng

Senior Consultant Endocrinologist

Dr. Donovan Tay

Senior Consultant Endocrinologist

Why patients choose specialist endocrine care at Arden

Consultations led by Senior Consultant Endocrinologists, Dr Ben Ng and Dr Donovan Tay.

Testing that looks beyond fasting glucose (fasting insulin, HOMA-IR, HbA1c, lipids, liver and thyroid function).

Care aligned with Singapore MOH Clinical Practice Guidelines and recognised endocrine standards.

Transparent, indicative cost information and Medisave / CDMP support for eligible patients.

Located at Mount Elizabeth Novena Specialist Centre, serving patients across Singapore.

If you are looking into insulin resistance in Singapore, this guide explains the signs, how the condition differs from diabetes, when to get tested, what testing involves, the indicative cost, and the specialist management options available under endocrine care. Insulin resistance is a metabolic state in which cells, primarily in the muscles, fat and liver, respond less effectively to insulin. To compensate, the pancreas produces higher levels of insulin to keep blood glucose stable.

This compensatory pattern can hold blood sugar within a normal range for years, which is why insulin resistance often goes undetected until it has progressed towards pre-diabetes or Type 2 Diabetes. Our focus is on identifying insulin resistance early, before pancreatic beta cells become exhausted, using specialist-led testing and an individualised plan that supports long-term metabolic health.

What is insulin resistance?

Insulin resistance is a condition in which muscle, fat and liver cells respond poorly to insulin, the hormone that moves glucose from the bloodstream into cells. The pancreas compensates by producing more insulin. When it can no longer keep pace, blood glucose rises, progressing towards pre-diabetes and Type 2 Diabetes.

The medical term for the raised insulin levels seen in this early phase is hyperinsulinaemia. Because standard fasting glucose can stay normal during this stage, insulin resistance is frequently missed on routine screening. Detecting the pattern earlier gives patients a longer window to act.

7 common signs of insulin resistance

Many patients put the early signs of insulin resistance down to ageing, stress or a busy schedule. Recognising the following patterns early is one of the most useful steps in reducing the risk of progression to Type 2 Diabetes.

Increased waist circumference

Central weight gain is one of the strongest physical markers. In Asian adults, a waist above 90 cm in men or above 80 cm in women suggests raised metabolic risk.
Acanthosis nigricans

Dark, velvety patches of skin, typically on the neck, armpits or groin, can reflect elevated circulating insulin.
Skin tags

Small, soft skin growths, often in the same areas as acanthosis nigricans, are commonly seen alongside insulin resistance.
Post-meal fatigue or brain fog

Pronounced tiredness or difficulty concentrating one to two hours after a carbohydrate-heavy meal can reflect inefficient glucose uptake.
Persistent hunger or sugar cravings

Feeling hungry soon after eating, or strong cravings for sweet or refined foods, is a common metabolic signal.
High blood pressure

Hypertension frequently coexists with insulin resistance as part of metabolic syndrome.
Irregular menstrual cycles or PCOS features in women

Polycystic Ovary Syndrome is closely associated with insulin resistance and may present with irregular periods, acne, or excess facial or body hair.

Note: These signs can occur with other medical conditions. A clinical assessment by a qualified endocrinologist is needed for diagnosis.

Insulin resistance vs pre-diabetes vs Type 2 Diabetes

What is the difference between insulin resistance and Type 2 Diabetes?

Insulin resistance is an early stage in which the pancreas compensates by producing more insulin, often with normal blood glucose. Type 2 Diabetes is a later stage in which beta cell function has declined and blood glucose is consistently raised. Insulin resistance identified early offers a window to intervene sooner.

Feature	Insulin Resistance	Pre-Diabetes	Type 2 Diabetes
Insulin levels	Elevated (compensatory hyperinsulinaemia)	Elevated, with reduced pancreatic reserve	May be normal, low, or ineffective
Fasting glucose	Often within normal range	5.6 to 6.9 mmol/L	7.0 mmol/L or higher on two occasions
HbA1c	Typically normal	6.0% to 6.4%	6.5% or higher
Pancreatic beta cells	Working harder to compensate	Beta cell function declining	Significant beta cell dysfunction
Reversibility	Often improves with specialist-guided intervention	Frequently improves if managed early	Manageable; remission possible in selected cases

Insulin resistance, pre-diabetes and Type 2 Diabetes sit on a continuum of metabolic dysfunction. Identifying where you sit on this continuum guides the type and intensity of intervention required.

Who should consider an insulin resistance assessment?

A standard fasting glucose test alone may not detect early insulin resistance. A more detailed metabolic assessment is worth considering if one or more of the following applies to you.

Family history

A first-degree relative with Type 2 Diabetes, or a personal history of gestational diabetes.
Body composition

BMI in the overweight or obese range, or a waist above the Asian cut-off (above 90 cm in men, above 80 cm in women).
Sedentary lifestyle

Fewer than 150 minutes of moderate-intensity physical activity per week.
Coexisting metabolic conditions

Hypertension, dyslipidaemia (raised cholesterol or triglycerides), or non-alcoholic fatty liver disease.
PCOS

Polycystic Ovary Syndrome, irregular periods, or unexplained difficulty with weight management.
Visible skin signs

Acanthosis nigricans, multiple skin tags, or new dark velvety patches on the neck or armpits.
Post-meal fatigue or strong cravings

Consistent post-meal drowsiness, brain fog, or cravings shortly after eating.

When to see a specialist: Consider arranging a specialist endocrine review sooner rather than later if you have several of the risk factors above, a fasting glucose or HbA1c that is creeping upwards, or symptoms that are affecting your daily routine. If you experience red-flag symptoms such as marked thirst, frequent urination, unexplained weight loss, or persistent blurred vision, seek prompt medical assessment, as these can indicate that blood glucose is already significantly raised.

Insulin resistance test in Singapore: when and how

Is there a single insulin resistance test in Singapore?

There is no single definitive test. Endocrinologists in Singapore typically combine fasting insulin, fasting glucose, the calculated HOMA-IR index, HbA1c, and where indicated an Oral Glucose Tolerance Test. The tests chosen depend on your clinical picture, family history and other risk factors.

A specialist may order one or more of the following investigations depending on your clinical presentation.

Test	What it Measures	Why it is Used
Fasting glucose	Blood glucose after an 8 to 10 hour fast.	Screens for impaired fasting glucose and diabetes; can be normal in early insulin resistance.
Fasting insulin	Circulating insulin after an overnight fast.	Raised insulin with normal glucose suggests the pancreas is compensating.
HOMA-IR index	A calculation from fasting insulin and fasting glucose.	A widely used index to estimate the degree of insulin resistance.
HbA1c	Average blood glucose over the previous 2 to 3 months.	Helps stage where a patient sits on the metabolic continuum.
Oral Glucose Tolerance Test (OGTT)	Blood glucose response after a 75 g oral glucose load.	Detects impaired glucose tolerance and gestational diabetes.
Lipid panel and liver function	Cholesterol, triglycerides, ALT, AST.	Identifies dyslipidaemia and non-alcoholic fatty liver disease, both commonly linked with insulin resistance.

What is HOMA-IR and what is a normal value in Singapore?

What is HOMA-IR and what is a normal value in Singapore?
HOMA-IR (Homeostatic Model Assessment of Insulin Resistance) is calculated from fasting insulin and fasting glucose. Singapore laboratory reference ranges generally read under 1.0 as high insulin sensitivity, 1.0 to 1.9 as normal, 2.0 to 2.9 as mild resistance, and 3.0 or higher as moderate to severe. It is always interpreted alongside other findings.

Indicative cost of insulin resistance testing in Singapore

The figures below are indicative ranges for informational reference only, based on publicly listed Singapore providers. Actual costs depend on your clinical workup, referral pathway, insurance coverage and clinic. Please contact our team for our current fees.

Investigation	Indicative Price Range (SGD)
Fasting blood glucose	Approximately S$10 to S$30
HbA1c	Approximately S$25 to S$60
Fasting insulin	Approximately S$60 to S$120
HOMA-IR (calculated)	Included with fasting insulin and glucose
Oral Glucose Tolerance Test	Approximately S$25 to S$80
Specialist consultation (Endocrinology)	Varies by case complexity; contact our team for current rates

Disclaimer: Indicative prices are for informational reference only and may change without notice. Certain investigations may be claimable under Medisave through the Chronic Disease Management Programme (CDMP) for eligible patients with a diagnosed chronic condition. Please verify coverage with your insurer or our clinic before your appointment.

Can insulin resistance be reversed?

Insulin resistance is not a fixed diagnosis. With specialist-guided changes to diet, activity, sleep and body composition, and medication where appropriate, many patients improve their metabolic markers. Rather than a permanent cure, the realistic aim is to improve and manage insulin sensitivity, which can help delay or reduce the risk of Type 2 Diabetes.

The degree of improvement varies considerably between individuals and cannot be predicted for any one person. It depends on baseline metabolic status, body composition, other medical conditions and how consistently the plan is followed. What we aim for is meaningful, sustainable change rather than a quick result.

Concerned about your metabolic health?

Arrange a specialist consultation at our Mount Elizabeth Novena clinic for an insulin and metabolic assessment.

Make an Enquiry

What to expect: your management timeline

Insulin resistance is a chronic metabolic condition rather than a one-off procedure, so care is ongoing. The outline below shows a typical pathway. Timing and results differ from person to person and cannot be guaranteed.

Initial consultation (week 1 to 2)

Detailed history, clinical examination and baseline metabolic tests, followed by an individualised plan.
Early phase (first 4 to 8 weeks)

Lifestyle changes are introduced and adjusted. Some patients begin to notice changes in energy, appetite or weight, though this varies.
Review point (around 3 to 6 months)

Selected markers, which may include fasting insulin, HOMA-IR and HbA1c, are repeated to review your response and refine the plan.
Ongoing monitoring

Periodic follow-up to track metabolic markers, sustain changes and adjust medication if used.

Any reference to a time frame describes a typical review schedule, not a promised outcome. Individual results vary.

Treatment approach at Arden Endocrinology

Specialist management of insulin resistance is individualised. A structured plan commonly includes several of the following components.

Nutritional strategy. A specialist-guided eating plan that prioritises whole foods, adequate protein and fibre, and reduced refined carbohydrate intake.
Physical activity prescription. A combination of aerobic exercise and resistance training to improve glucose uptake by skeletal muscle.
Sleep and stress optimisation. Addressing sleep duration, sleep apnoea risk and chronic stress, all of which influence insulin sensitivity.
Body composition goals. Realistic, sustainable reductions in visceral fat.
Pharmacotherapy where appropriate. Metformin is a commonly prescribed first-line insulin sensitiser. Other classes, including GLP-1 receptor agonists and SGLT2 inhibitors, may be considered based on coexisting conditions. Medication is prescribed only after specialist clinical assessment.
Coordinated specialist care. Where insulin resistance overlaps with PCOS, fatty liver or thyroid disorders, integrated endocrine care is provided.

Comparing management approaches

There is rarely a single right answer. The table below sets out the main approaches and when each is typically considered, so you can understand the options discussed during your consultation.

Approach	When it is Typically Considered	Key Considerations
Lifestyle-first (diet, activity, sleep, weight)	Suitable as the foundation for most patients, particularly earlier-stage insulin resistance.	Requires sustained change; effects build over months; no medication side effects.
Metformin	Often added when lifestyle change alone is insufficient, or where risk is higher.	May cause gastrointestinal upset; long-term use can affect vitamin B12; generally well tolerated.
GLP-1 receptor agonists	Considered where obesity or specific cardiometabolic risks coexist.	Can support weight and glucose control; nausea is common early; administered by injection or, for some agents, orally.
SGLT2 inhibitors	Considered with coexisting Type 2 Diabetes, cardiac or kidney indications.	Additional heart and kidney considerations; specific precautions apply and are assessed individually.

All medication decisions follow a specialist clinical assessment. The right combination depends on your individual profile.

Risks, side effects and considerations

Balanced information matters. Below is an honest summary of the considerations involved, both in leaving insulin resistance unaddressed and in the treatments used.

Risk of progression if untreated. Left unaddressed, insulin resistance can progress towards pre-diabetes and Type 2 Diabetes, and is associated with cardiovascular and fatty liver risk. Early management aims to reduce this risk.
Lifestyle change is demanding. Sustained dietary and activity change is challenging, and the benefit depends on consistency. Support and realistic goal-setting are part of the plan.
Medication side effects. Metformin can cause gastrointestinal upset and, with long-term use, may lower vitamin B12. GLP-1 receptor agonists commonly cause early nausea. SGLT2 inhibitors carry specific precautions. Your specialist will discuss the relevant risks before prescribing.
Low but real hypoglycaemia consideration. Insulin sensitisers used alone carry a low risk of low blood sugar, but this can change if other glucose-lowering medications are added, and is monitored.
Results are not guaranteed. Response varies between individuals. No outcome can be promised, and any medication is prescribed only after individual assessment.

Special populations and insulin resistance

Insulin resistance does not present the same way in every patient. The following groups warrant particular clinical attention.

The TOFI phenotype: thin outside, fat inside

It is possible to be insulin resistant at a normal or low BMI. Visceral fat around the abdominal organs can drive metabolic dysfunction even when external body weight appears unremarkable. This pattern is increasingly recognised in Asian populations, and is a reason why fasting glucose alone may be insufficient as a screening tool.

Women with PCOS. Many women with PCOS have some degree of insulin resistance. Addressing it is central to improving menstrual regularity, fertility outcomes and metabolic risk.
Women with prior gestational diabetes. A raised lifetime risk of insulin resistance and Type 2 Diabetes warrants structured long-term follow-up.
Patients on medications that affect insulin sensitivity. Long-term corticosteroids, certain antipsychotics and selected antiretrovirals can contribute to insulin resistance and warrant specialist review.
Patients with non-alcoholic fatty liver disease (NAFLD). Hepatic insulin resistance is closely linked with NAFLD, and the two conditions are best assessed together.

In our clinical practice

A few observations from managing metabolic conditions at our clinic, offered to help you know what to expect.

A recurring pattern we see is a patient with an entirely normal fasting glucose but a clearly raised fasting insulin. On a routine screen this often looks reassuring, which is why we interpret several markers together rather than relying on glucose alone.
Patients frequently ask whether one blood test can confirm insulin resistance. In practice, we read the fasting insulin, HOMA-IR, HbA1c and, where relevant, an OGTT alongside the clinical picture, rather than treating any single number in isolation.
A point we often clarify is that a normal body weight does not rule out insulin resistance. The TOFI pattern means visceral fat can drive the problem even when the scales look fine.
The question we hear most is whether it can be reversed. Our honest answer is that many people improve their markers meaningfully with sustained change, that the degree of improvement varies, and that consistency matters more than intensity.

Insurance, Medisave and coverage in Singapore

In Singapore, specialist consultations and diagnostic testing for insulin resistance and related metabolic conditions may be partially or fully covered by personal or corporate health insurance, depending on whether the test is coded as diagnostic (investigating a clinical concern) or screening (preventive). Patients with a diagnosed chronic condition such as Type 2 Diabetes or hypertension may also use Medisave under the Chronic Disease Management Programme (CDMP) for subsidised follow-up care. We recommend speaking with your insurer in advance, and our administrative team can assist with pre-authorisation queries.

Frequently Asked Questions

Can insulin resistance be reversed?

Insulin resistance can often be improved through specialist-guided lifestyle changes, weight management and, where appropriate, medication. Rather than a permanent cure, the realistic aim is to restore better insulin sensitivity through sustained change, which can help delay or reduce the risk of Type 2 Diabetes. The degree and durability of improvement varies between individuals.

Is there a single insulin resistance test in Singapore?

There is no single definitive test. Endocrinologists in Singapore typically use a combination of fasting insulin, fasting glucose, the calculated HOMA-IR index, HbA1c and, where indicated, an Oral Glucose Tolerance Test. The choice depends on your clinical presentation, family history and other risk factors.

Does PCOS always cause insulin resistance?

Not every woman with Polycystic Ovary Syndrome has insulin resistance, but the link is strong. Many women with PCOS have some degree of it, and addressing it can improve menstrual regularity, weight management and metabolic markers.

Can I have insulin resistance even if I am not overweight?

Yes. This pattern is sometimes called the TOFI phenotype (thin outside, fat inside). Visceral fat around the abdominal organs can drive insulin resistance even when overall BMI is within the normal range, which is why fasting glucose alone is not always enough to rule it out.

What medications are used to treat insulin resistance?

Metformin is commonly prescribed as a first-line insulin sensitiser. Other classes, including GLP-1 receptor agonists and SGLT2 inhibitors, may be considered depending on coexisting conditions such as obesity, cardiovascular disease or established Type 2 Diabetes. Medication is always prescribed after a specialist clinical assessment.

How long does it take to see improvements in insulin sensitivity?

With consistent adherence to a structured plan, some patients see changes in fasting insulin, HOMA-IR and HbA1c over several months, and markers are commonly reviewed at around three to six months. Individual response varies and cannot be predicted for any one person.

Does insurance cover insulin resistance testing in Singapore?

Coverage varies. Many private specialist consultations and diagnostic blood tests are covered by corporate or personal health insurance when ordered as a diagnostic investigation for an identified clinical concern. Coverage may differ for screening tests in people without symptoms. We recommend confirming with your insurer in advance.

What is HOMA-IR and what is a normal value in Singapore?

HOMA-IR (Homeostatic Model Assessment of Insulin Resistance) is calculated from fasting insulin and fasting glucose. Singapore laboratory reference ranges generally read values under 1.0 as high insulin sensitivity, 1.0 to 1.9 as normal, 2.0 to 2.9 as mild resistance, and 3.0 or higher as moderate to severe. It is interpreted alongside other clinical findings.

What is the difference between insulin resistance and Type 2 Diabetes?

Insulin resistance is an earlier stage in which the pancreas compensates by producing more insulin. Type 2 Diabetes is the later stage in which beta cell function has declined and blood glucose is consistently raised. Identifying insulin resistance early provides a window for intervention before pancreatic function is significantly affected.

Do I need a GP referral to see an endocrinologist at Arden?

A referral is not strictly required to see a specialist endocrinologist at Arden, although a referral letter from your GP can help with continuity of care and may be required by certain insurance plans. Please check with our reception team when booking.

Specialist-led consultations

Consultations are led by Dr Ben Ng and Dr Donovan Tay, both Senior Consultant Endocrinologists with subspecialty training in diabetes and metabolic medicine.

Specialist-led consultations

Consultations are led by Dr Ben Ng and Dr Donovan Tay, both Senior Consultant Endocrinologists with subspecialty training in diabetes and metabolic medicine.
Detailed diagnostic assessment

Beyond a single fasting glucose test, assessments may include fasting insulin, HOMA-IR, HbA1c, lipid profile, liver function and thyroid function to build a full metabolic picture.
Care aligned with clinical guidelines

Management is informed by Singapore MOH Clinical Practice Guidelines and recognised international endocrine standards.
Continuity of endocrine care

Insulin resistance frequently overlaps with PCOS, thyroid disorders, osteoporosis and obesity. Our clinic offers continuity across these related conditions under one specialist team.
Mount Elizabeth Novena location

Located at Mount Elizabeth Novena Specialist Centre, with access to imaging, laboratory diagnostics and allied specialists.
Insurance and Medisave support

Our administrative team can assist with insurance pre-authorisation queries and applicable Medisave CDMP processes for eligible patients.

Visit us: location and service areas

Arden Endocrinology Specialist Clinic

Address: Mount Elizabeth Novena Specialist Centre, 38 Irrawaddy Road #04-28, Singapore 329563
Phone: +65 6334 2301 Fax: +65 6334 3273
Email: [email protected] Website: www.arden.com.sg
Consulting hours: Weekdays 8:30 AM to 12:00 PM and 2:00 PM to 4:30 PM; Saturdays 8:30 AM to 11:30 AM; Sundays and public holidays closed.

Serving patients across Singapore, including Novena, Orchard and the Central region.

Take proactive control of your metabolic health

Speak with a Senior Consultant Endocrinologist at Arden about insulin resistance testing and an individualised plan.

Make an Enquiry

Dr Ben Ng

Senior Consultant Endocrinologist

As a senior consultant endocrinologist with over 20 years of clinical experience, Dr Ben Ng provides comprehensive care for patients managing various endocrine conditions. His expertise includes the diagnosis and treatment of diabetes, thyroid disorders, obesity, and a range of other metabolic and endocrine conditions.

Dr Ben Ng Jen Min graduated from the Queens University of Belfast Northern Ireland, United Kingdom (UK).
He completed his postgraduate training with the certificate of completion of training (CCT) from the Royal College of Physicians (UK) with dual accreditation in diabetes and endocrinology and in general internal medicine.
In 2010, he was awarded an MD with honours by the University of Hull, UK, in recognition for his research in diabetes mellitus

Dr Donovan Tay

Senior Consultant Endocrinologist

As a senior consultant endocrinologist with over 20 years of clinical experience, Dr. Donovan Tay provides comprehensive care for patients managing various endocrine conditions. His expertise includes the diagnosis and treatment of diabetes, thyroid disorders, osteoporosis, and a range of other metabolic and endocrine conditions.

Dr. Donovan Tay graduated from the National University of Singapore (NUS) and obtained his membership in the Royal College of Physicians (UK), Master of Medicine (NUS), and Master of Clinical Investigation (NUS).
After completing training in endocrinology, he was conferred as a Fellow of the Academy of Medicine, Singapore (FAMS).
He further specialised in endocrinology with a fellowship at the prestigious Columbia University Medical Centre in New York City.

billing & insurance

Payment Scheme, Health Insurance

We accept a wide selection of both local and international healthcare insurance to help you cover your medical treatment and follow-up care expenses. Rest assured, you can focus on your health & well-being with peace of mind. Kindly speak to our friendly clinic staff if you require any assistance for your healthcare insurance.