Measuring body fat loss is the process of quantifying the reduction of fat mass in the human body. For example, after following a weight loss plan, an individual may want to know how much of the weight lost was due to fat loss as opposed to muscle loss.
Measuring body fat loss is important for evaluating the effectiveness of weight loss interventions, setting realistic goals, and tracking progress towards reducing fat mass. Historically, body mass index (BMI) was the primary measure of body fat, however, it has limitations in distinguishing between fat and muscle mass.