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Obesity Definition and Diagnosis

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Questions and Answers

What is obesity characterized by?

An imbalance of body weight regulatory systems

A genetic disorder

An accumulation of excess body fat (correct)

A lack of exercise

What is the most common way to determine if a person is affected by overweight or obesity?

Estimating body fat using the Body Mass Index (BMI) (correct)

Measuring the waist size with a tape measure

Calculating the body fat percentage

Conducting a physical activity test

What is considered a healthy weight for most adults?

BMI of 25 to 29.9 kg/m²

BMI of 18.5 to 24.9 kg/m² (correct)

BMI of 35 to 39.9 kg/m²

BMI of 30 to 34.9 kg/m²

What is an exception to the BMI classification?

Athletes with large amounts of lean muscle mass Signup and view all the answers

What is the measurement of 94 cm or less in men considered?

Normal waist circumference Signup and view all the answers

What is the risk factor associated with excess central fat?

Increased risk for morbidity and mortality Signup and view all the answers

What is the classification of obesity with a BMI of 30 to?

Class I obesity Signup and view all the answers

What is the classification of a waist circumference of 94-102cm in men?

High risk Signup and view all the answers

What is the classification of a waist circumference of more than 88cm in women?

Very high risk Signup and view all the answers

Study Notes

Definition of Obesity

Obesity is a disorder characterized by an accumulation of excess body fat due to an imbalance between energy intake and energy expenditure.

Diagnosis of Obesity

Body Mass Index (BMI) is used to estimate body fat by dividing weight (kg) by height (m²).
BMI categories:
- Healthy weight: 18.5-24.9 kg/m²
- Overweight: 25-29.9 kg/m²
- Obese: ≥30 kg/m²
Exceptions: Athletes with large amounts of lean muscle mass
Waist circumference (WC) measurement is used to screen for obesity, reflecting central abdominal fat.
- Normal WC: <94 cm (men), <80 cm (women)
- High risk: 94-102 cm (men), 80-88 cm (women)
- Very high risk: >102 cm (men), >88 cm (women)