Lean body mass preservation (None (no standard abbreviation for this as a molecular target))

Lean body mass preservation refers to the maintenance or minimization of the loss of non-fat tissues—including skeletal muscle, bone, organs, and connective tissues—during periods when overall body weight is reduced through diet, medication, illness, or aging. It is not a single molecule or druggable biological target but rather an important clinical goal because maintaining adequate lean tissue supports metabolic health, physical function/mobility, immune response capacity, bone density protection against osteoporosis/frailty/fractures in later life stages. Strategies proven effective at preserving lean body mass include increased dietary protein intake above standard recommendations (~1.2–1.6 g/kg/day), regular resistance exercise/training programs tailored by age/ability level—and careful monitoring when using potent anti-obesity medications that may otherwise accelerate both fat and non-fat losses if unaccompanied by these supportive measures.

Other names

Muscle preservationLean mass retentionFat-free mass maintenance

Not applicable—lean body mass preservation is an outcome influenced by interventions such as: Increased dietary protein intake supports muscle protein synthesis over breakdown during caloric deficit or aging. Resistance training stimulates hypertrophy and helps maintain/increase muscle tissue even during periods of weight loss or aging.