Overweight vs Obesity: What Is the Difference?

Overweight vs obesity: the important difference

Both overweight and obesity involve a weight above the healthy range, but they represent different levels of health risk. The dividing line according to the WHO is BMI 30.

What risks does overweight carry?

Overweight (BMI 25–29.9) does not always imply immediate risk, but it does increase the probability of developing over time:

• Slightly elevated blood pressure
• Insulin resistance (precursor to type 2 diabetes)
• Elevated cholesterol and triglycerides
• Greater burden on joints

With lifestyle changes (more exercise and better diet), overweight can frequently be reversed without specific medical intervention.

What risks does obesity carry?

Obesity (BMI ≥ 30) represents a substantially higher risk:

• Type 2 diabetes: 3–7 times greater risk than in people with normal BMI
• Cardiovascular disease: main cause of death in obese individuals
• Certain types of cancer: colon, breast, endometrium, kidney
• Severe sleep apnea
• Non-alcoholic fatty liver disease
• Depression and anxiety (bidirectional relationship)

Obesity generally requires professional medical accompaniment for effective and safe treatment.

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