WHAT ARE THE 7 SIGNS OF INSULIN RESISTANCE?

Insulin resistance is a common metabolic condition that often develops gradually over many years. In its early stages, it may cause few obvious symptoms, which is why many people do not realise they have it until blood tests reveal a problem.

The condition occurs when the body's cells become less responsive to insulin, a hormone produced by the pancreas that helps regulate blood sugar levels. To compensate, the pancreas produces increasing amounts of insulin to keep blood glucose within a normal range. Over time, this can place significant strain on the body's metabolic systems and increase the risk of prediabetes and type 2 diabetes.

While insulin resistance cannot always be identified by symptoms alone, there are several warning signs that may suggest your body is struggling to respond to insulin effectively.

If you are concerned about your metabolic health, an Insulin Blood Test can help provide more insight into how your body is producing and using insulin.

Before looking at the symptoms, it helps to understand what insulin resistance actually means.

When you eat, carbohydrates are broken down into glucose, which enters the bloodstream. Insulin acts like a key, helping glucose move from the blood into cells where it can be used for energy.

With insulin resistance, the cells stop responding as effectively. As a result, the pancreas produces more insulin to achieve the same effect. For a period of time, blood sugar levels may remain normal because the pancreas can keep up with demand.

Eventually, however, blood glucose levels may begin to rise, leading to prediabetes or type 2 diabetes.

SIGN 1: WEIGHT GAIN OR DIFFICULTY LOSING WEIGHT

One of the most common signs of insulin resistance is unexplained weight gain or difficulty losing weight despite making healthy lifestyle changes.

High insulin levels encourage the body to store energy as fat. When insulin levels remain elevated for long periods, fat storage becomes easier and fat burning becomes more difficult.

Many people with insulin resistance feel as though they gain weight more easily than others, particularly around the abdomen.

While weight gain alone does not prove insulin resistance, persistent struggles with weight management may warrant further investigation.

SIGN 2: STRONG CRAVINGS FOR SUGARY OR CARBOHYDRATE RICH FOODS

Many people with insulin resistance experience intense cravings for sugary foods, bread, pasta, or other refined carbohydrates.

As insulin levels rise and blood sugar regulation becomes less efficient, fluctuations in blood glucose can trigger feelings of hunger and cravings. Some people describe feeling hungry again shortly after eating, particularly after meals high in carbohydrates.

These cravings can make healthy eating more challenging and may contribute to further weight gain over time.

SIGN 3: DARK PATCHES OF SKIN

Acanthosis nigricans is one of the more visible signs of insulin resistance.

This condition causes areas of skin to become darker, thicker, and velvety in appearance. It most commonly affects:

• The back of the neck

• The armpits

• The groin

• Skin folds

The condition is thought to develop because elevated insulin levels stimulate certain skin cells.

While acanthosis nigricans can have other causes, it is strongly associated with insulin resistance and should be assessed by a healthcare professional.

SIGN 4: SKIN TAGS

Skin tags are small, soft growths that often develop in areas where skin rubs together, such as the neck, armpits, eyelids, or groin.

Although harmless, they appear more frequently in people with insulin resistance and metabolic syndrome. Some researchers believe elevated insulin levels may contribute to their development.

The presence of multiple skin tags does not confirm insulin resistance, but it may be another clue when combined with other symptoms.

SIGN 5: INCREASED THIRST AND FREQUENT URINATION

As insulin resistance progresses and blood sugar levels begin to rise, some people notice increased thirst and more frequent trips to the bathroom.

When excess glucose builds up in the bloodstream, the kidneys work harder to remove it through urine. This causes the body to lose more fluid, leading to dehydration and increased thirst.

These symptoms are often associated with prediabetes and diabetes, but they may also appear during the later stages of insulin resistance.

SIGN 6: HIGH BLOOD PRESSURE OR ABNORMAL CHOLESTEROL LEVELS

Insulin resistance often occurs alongside other metabolic abnormalities.

Many people with insulin resistance also have:

• High blood pressure

• Elevated triglycerides

• Low HDL ("good") cholesterol

• Increased cardiovascular risk

These changes may not cause noticeable symptoms, which is why regular health checks are important.

Blood pressure readings of 130/80 mmHg or higher and elevated triglyceride levels are commonly seen in people with insulin resistance.

SIGN 7: FATIGUE AND LOW ENERGY LEVELS

Feeling tired after meals or struggling with persistent fatigue can sometimes be linked to insulin resistance.

When glucose cannot efficiently enter cells, the body's ability to use energy effectively may be affected. At the same time, fluctuations in blood sugar can contribute to energy crashes, reduced concentration, and feelings of sluggishness throughout the day.

Although fatigue has many possible causes, it is a symptom commonly reported by people with metabolic health issues.

Some people may experience additional symptoms depending on their age, sex, and overall health.

Possible signs include:

• Increased waist circumference

• Brain fog

• Difficulty concentrating

• Water retention

• Polycystic ovary syndrome (PCOS)

• Acne and excess facial hair in women

• Non alcoholic fatty liver disease

Many of these symptoms overlap with other conditions, which is why blood testing is often needed to investigate further.

Several factors increase the likelihood of developing insulin resistance.

Risk factors include:

• Excess body weight, particularly around the abdomen

• Physical inactivity

• A family history of type 2 diabetes

• Polycystic ovary syndrome

• Sleep apnoea

• Smoking

• Increasing age

• A diet high in refined carbohydrates and processed foods

Having one or more risk factors does not mean you will definitely develop insulin resistance, but it may increase the value of monitoring your metabolic health.

There is no single test that definitively diagnoses insulin resistance.

Healthcare professionals typically assess a combination of factors, including:

• Medical history

• Physical examination

• Fasting blood glucose

• HbA1c

• Lipid profile

• Fasting insulin levels

Some clinicians may also calculate HOMA-IR, which combines fasting insulin and glucose results to estimate insulin sensitivity.

Because insulin resistance can exist for years before diabetes develops, testing may help identify problems earlier.

In many cases, insulin resistance can be improved through lifestyle changes.

Strategies that may help include:

• Regular physical activity

• Weight loss where appropriate

• Improving sleep quality

• Reducing highly processed foods

• Eating more fibre rich foods

• Managing stress levels

• Stopping smoking if applicable

Even modest improvements in weight and activity levels can have a positive impact on insulin sensitivity.