Adult-Gerontology Clinical Nurse Specialist (CNS) Practice Exam

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What BMI is considered to indicate obesity in adults?

Over 18
Over 20
Over 25
Over 30

The correct answer is: Over 30

A Body Mass Index (BMI) of over 30 is classified as obesity in adults. This classification is based on established guidelines from organizations such as the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC). BMI is calculated using an individual's weight in kilograms divided by their height in meters squared. The interpretation of the BMI scale is as follows: a BMI below 18.5 indicates underweight; a BMI of 18.5 to 24.9 falls within the normal weight range; a BMI of 25 to 29.9 is considered overweight, and a BMI of 30 or greater signifies obesity. Understanding these thresholds is important for assessing body weight and associated health risks. Obesity is linked to various health conditions, including cardiovascular diseases, diabetes, and certain types of cancer, making it crucial for healthcare providers to recognize and address it in their patient populations.