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Lean Body Mass Accrual

Meaning

Lean Body Mass Accrual is the physiological process of increasing the total mass of non-fat components in the body, which primarily includes skeletal muscle, bone, and water, over a sustained period. This is a crucial metric for metabolic health and longevity, as maintaining or gaining lean mass is inversely correlated with all-cause mortality and insulin resistance. Clinically, the focus is on creating a sustained, favorable anabolic environment to promote net protein synthesis that exceeds the rate of protein degradation.