Certified Dietary Manager (CDM) Practice Exam

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What does Body Mass Index (BMI) take into consideration?

Dietary fiber and cholesterol levels
Both weight and height
Age and physical activity
Fat and muscle composition

The correct answer is: Both weight and height

Body Mass Index (BMI) is a measurement that calculates a person's body weight in relation to their height. It is defined as weight in kilograms divided by the square of height in meters. This value provides an estimate of body fat and is often used to categorize individuals into different weight status categories, such as underweight, normal weight, overweight, and obese. The focus on both weight and height allows for a standardized way to assess whether an individual may be at risk for weight-related health issues, particularly as these issues can vary significantly with different body sizes. This direct correlation to weight and height makes this option the correct answer, as it accurately reflects the components used to calculate BMI. Other options, while relevant to health and nutrition, do not play a role in the calculation of BMI itself. Dietary fiber and cholesterol levels relate more to dietary habits and heart health than to body weight assessment. Age and physical activity are important for overall health but are not factored into the BMI calculation. Lastly, fat and muscle composition pertain more to body composition analysis, which goes beyond the simple height and weight measurement that BMI utilizes.