It is a condition where muscle, fat, and liver cells in the body fail to respond adequately to insulin. This is also referred to as "decreased insulin sensitivity."

Insulin, a hormone secreted by the pancreas, is essential for life because it maintains blood sugar balance. Normally, insulin enables glucose in the blood to enter cells, where it is used as energy. However, for various reasons, cells begin to "ignore" insulin. When this happens, cells cannot uptake glucose.

As a result, glucose can neither be converted to energy nor stored; consequently, sugar continues to accumulate in the blood. The pancreas then works harder to produce more insulin to lower the rising blood sugar. This condition is called Hyperinsulinemia.

As long as the pancreas can keep up with this pace and balance blood sugar, levels remain within the normal range. However, if cells continue to show increasing resistance to insulin, blood sugar can no longer be maintained in balance and levels begin to rise (Hyperglycemia). Over time, this leads first to prediabetes, then to Type 2 Diabetes.

What is Metabolic Syndrome?

Metabolic syndrome is the co-occurrence of five dangerous health conditions that significantly increase the risk of heart disease, stroke, and Type 2 Diabetes. If at least three of the following five conditions are present, it is classified as metabolic syndrome:

Hypertension (High blood pressure)
Hyperglycemia (High blood sugar)
Excess abdominal fat (central obesity)
Low HDL ("good") cholesterol
High Triglycerides

This is not just a single disease but rather a dangerous cluster that can lead to many other complications. Insulin resistance is the underlying mechanism, and metabolic syndrome is the associated group of clinical findings.

Common Symptoms

Persistent Fatigue

Cells starve because glucose cannot enter them to be converted into energy.

Severe Hunger

The body demands more food as it cannot find sufficient energy.

(Skin Darkening) Acanthosis Nigricans

Dark patches especially on the neck and underarms. It is one of the clearest external warnings that the system is beginning to clog.

Waistline Fat Accumulation

A waist circumference over 105 cm in men and 88 cm in women.

Post-Meal Lethargy

Experiencing a significant drop in energy after eating.

Diagnosis Methods

HOMA-IR Calculation

The primary calculation method for detecting insulin resistance.

Oral Glucose Tolerance Test (OGTT)

A blood test that measures how well the body processes sugar.

Waist Circumference Measurement

Evaluated as one of the criteria for metabolic syndrome.

Triglyceride Measurement

Assessment of blood fat levels.

HDL Cholesterol

Detection of good cholesterol levels.

Blood Pressure Measurement

Evaluation of the presence of hypertension.

Fasting Blood Glucose and HbA1c

Evaluation of long-term blood sugar control.

Treatments

Dietary Changes

Low glycemic diet, carbohydrate restriction, Mediterranean diet, intermittent fasting.

Exercise and Weight Management

Weight control through regular physical activity.

Insulin Sensitizers

Metformin (Glifor, Matofin, Glucophage, Diaformin), Pioglitazone (Glifi, Dropia, Pionorm).

Blood Pressure Lowering Medications

Used for the control of high blood pressure.

Cholesterol and Triglyceride Lowering Agents

Atorvastatin, Simvastatin, Rosuvastatin, Fenofibrate, Gemfibrozil, Ezetimibe, Evolocumab.

GLP-1 Analogs

Semaglutide (Ozempic), Tirzepatide (Mounjaro), Liraglutide (Victoza, Saxenda), Dulaglutide (Trulicity).

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