An increasing waist circumference and unusual weight gain may be more than just changes in body shape. In some individuals, these changes can be associated with insulin resistance, a condition in which the body’s cells do not respond effectively to insulin. Insulin helps regulate blood glucose levels, and when the body cannot use it properly, blood sugar levels may gradually increase, potentially leading to prediabetes.
Prediabetes is a condition in which blood glucose levels are higher than normal but not high enough to be diagnosed as type 2 diabetes. It often develops silently, and many people may not experience noticeable symptoms for years. However, certain physical changes and health indicators can signal an increased risk.
Excess abdominal fat, particularly fat stored around the waist, is associated with insulin resistance and a higher risk of developing type 2 diabetes. However, weight gain or an increasing waistline alone cannot confirm that someone has prediabetes. Blood tests are necessary for an accurate diagnosis.
Here are eight important warning signs and risk indicators that you should know about.
1. Increasing Waist Circumference
An increase in waist size, particularly around the abdomen, can indicate excess visceral fat. This is the fat stored deep inside the abdominal cavity around internal organs. Excess visceral fat is associated with insulin resistance and an increased risk of metabolic disorders, including prediabetes and type 2 diabetes.
2. Unusual or Gradual Weight Gain
Unexplained or gradual weight gain, especially around the abdomen, may be associated with insulin resistance. Excess body fat can affect how effectively insulin works in the body. However, weight gain has several possible causes, including dietary habits, hormonal changes, medication and reduced physical activity.
3. Dark Patches Around the Neck and Armpits
One possible visible sign of insulin resistance is a skin condition called acanthosis nigricans. It causes dark, thickened and velvety patches of skin, commonly around the neck, armpits and groin. If you notice these changes, consult a healthcare professional for evaluation.
4. Increased Hunger and Frequent Food Cravings
Some people with insulin resistance may experience changes in appetite and frequent hunger. Difficulty regulating blood glucose can affect normal metabolic processes. However, increased hunger alone is not a reliable indicator of prediabetes and may have several other causes.
5. Feeling Tired or Low on Energy
Persistent tiredness or unexplained fatigue may sometimes accompany blood sugar abnormalities. Insulin resistance can interfere with the body’s normal glucose-regulation process. However, fatigue is a common symptom associated with many health conditions and should not automatically be linked to diabetes.
6. Physical Inactivity and Abdominal Obesity
A sedentary lifestyle, prolonged sitting and lack of regular exercise can contribute to abdominal fat accumulation and insulin resistance. People who carry excess weight around their waist may have a higher risk of developing prediabetes. Regular physical activity can improve insulin sensitivity and support better blood sugar control.
7. Family History of Diabetes
Having a parent or sibling with type 2 diabetes can increase your risk of developing prediabetes. Genetic factors, combined with lifestyle habits, can influence how your body regulates blood glucose. People with a family history of diabetes should consider regular blood sugar screening, even if they feel healthy.
8. High Blood Pressure and Abnormal Cholesterol Levels
Prediabetes and insulin resistance are often associated with other metabolic risk factors, including high blood pressure, elevated triglycerides and low HDL (good) cholesterol. The presence of multiple risk factors may indicate a higher risk of developing type 2 diabetes and cardiovascular disease.
How to Confirm Whether You Have Prediabetes
Physical symptoms cannot confirm prediabetes. A healthcare professional may recommend the following blood tests:
| Test | Prediabetes range |
|---|---|
| HbA1c | 5.7%–6.4% |
| Fasting blood glucose | 100–125 mg/dL |
| 2-hour Oral Glucose Tolerance Test | 140–199 mg/dL |
These are commonly used diagnostic ranges. Your doctor can interpret the results and advise whether repeat testing is needed.
6 Ways to Reduce Your Risk of Prediabetes
- Maintain a healthy weight: If you are overweight, even modest weight loss can improve insulin sensitivity.
- Eat a balanced diet: Include vegetables, whole grains, pulses, fruits and fibre-rich foods while limiting sugary drinks and processed foods.
- Exercise regularly: Aim for at least 150 minutes of moderate physical activity every week.
- Avoid prolonged sitting: Take short walking breaks throughout the day.
- Get adequate sleep: Aim for 7–9 hours of quality sleep every night.
- Monitor blood sugar: Get regular HbA1c and fasting glucose tests if you have risk factors.
Conclusion
An increasing waist circumference and unusual weight gain should not be ignored, particularly when accompanied by other metabolic risk factors. Although these changes do not necessarily mean you have prediabetes, they may indicate an increased risk of insulin resistance. Since prediabetes often develops without obvious symptoms, timely blood sugar testing is essential. Early identification, healthy eating, regular exercise and appropriate medical guidance can help prevent or delay the progression to type 2 diabetes.
