Body composition refers to the proportion of fat, muscle, water, and other tissues that make up a person's body weight. It is an important aspect of overall health and can affect an individual's risk for various chronic diseases such as obesity, diabetes, and cardiovascular disease. Research in body composition typically involves measuring and analyzing the distribution of lean mass (muscle and bone) and fat mass in the body. This can be done using various methods such as dual-energy X-ray absorptiometry (DXA), bioelectrical impedance analysis (BIA), and skinfold measurements. Understanding body composition can help healthcare professionals assess an individual's risk for various health conditions, track changes in body composition over time, and develop personalized diet and exercise recommendations to improve overall health and wellness. Research in this area also explores the relationship between body composition and factors such as metabolism, physical activity, and genetics.