Patient-Friendly Explanation

Lean body mass is everything in your body that is not fat – your muscles, bones, organs and water. Muscle burns more energy than fat, so having more lean mass helps you keep a higher metabolism. Protecting lean mass while losing weight is key to healthy, lasting results.

Clinical Definition

Lean body mass (LBM), also termed fat-free mass, comprises skeletal muscle, bone, organs and body water. It is a primary determinant of resting energy expenditure, so preserving it during weight loss helps prevent the metabolic adaptation that otherwise slows progress and predisposes to weight regain. Strategies that preserve LBM include adequate protein intake and resistance training.

Why It Matters

Losing weight too quickly or without resistance exercise can strip away muscle, slow the metabolism and make regain more likely. NuLifeCare Singapore’s programme emphasises muscle-preserving strategies, including individualised nutrition and exercise guidance, so patients lose fat rather than lean tissue.