During a routine intake assessment, the medical assistant calculates a patient's body mass index (BMI). Which health parameter is BMI intended to estimate so the provider can discuss possible weight-related health risks with the patient?
Overall body fatness based on weight relative to height
Distribution of lean muscle mass in relation to body surface area
Basal metabolic rate expressed in calories per day
Percentage of total body water compared to body weight
BMI is calculated as weight in kilograms divided by height in meters squared (kg/m²). Although it does not directly measure adipose tissue, it provides a quick, inexpensive estimate of overall body fatness and helps classify patients as underweight, normal weight, overweight, or obese-categories that correlate with chronic-disease risk. BMI does not determine basal metabolic rate, total body water, or lean-muscle distribution.
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