Final answer:
Ideal weight includes lean body weight and body fat. Health professionals use mathematical formulas and measurements like Body Mass Index (BMI) to determine the 'ideal' weight and assess disease risk.
Step-by-step explanation:
Ideal weight includes lean body weight and body fat. The perception of the 'ideal' body weight is dependent on factors such as frame size, sex, muscle mass, bone density, age, and height. In order to determine the 'ideal' weight, health professionals use mathematical formulas and measurements like Body Mass Index (BMI), which relates body weight to height and is correlated with disease risk.