Lean Body Mass

Definition

Lean body mass is the total weight of your body minus all the weight due to your fat mass. It includes muscles, bones, water, organs, and all other non-fat tissues.

Scientific / Technical Definition

Lean body mass (LBM) refers to the total mass of the human body minus the adipose tissue. LBM includes the mass of all body components except fat, such as organs, bones, muscle, and other connective tissues. It is a key determinant of basal metabolic rate and is crucial for calculating total daily energy expenditure.

Benefits

• Improves basal metabolic rate and energy expenditure
• Supports functional strength and mobility
• Enhances muscle mass and overall fitness levels
• Contributes to healthy weight regulation

Examples

• Gaining muscle mass through resistance training
• Measurement in body composition analysis using bioelectrical impedance or DEXA scans

Additional Information

• importance: Lean body mass is important for metabolic health, physical development, and athletic performance. Maintaining a healthy balance of lean mass supports effective weight management and overall well-being.

Related Terms

• Basal Metabolic Rate
• Body Composition
• Fat Mass
• Muscle Mass
• Resting Metabolic Rate

References

• Understanding Lean Body Mass and Its Importance
• Body Composition and Metabolic Rate in Humans