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Lean Mass Maintenance

Meaning

Lean Mass Maintenance is the physiological and clinical objective of preserving the total mass of non-fat body components, which includes skeletal muscle, bone, connective tissue, and internal organs, particularly in the face of catabolic stress, aging, or caloric restriction. This metric is a critical determinant of metabolic health, functional capacity, and overall longevity, as skeletal muscle serves as the primary reservoir for amino acids and the main site for insulin-mediated glucose disposal. A positive hormonal environment is crucial for this maintenance.