Wasting is essential: cachexia is driven by a wound-healing adaptation

In a mathematical model of induced muscle wasting (IMW), acute wound healing takes ~2–6 times longer without IMW, indicating IMW supports rapid healing.

• Why it matters: Cachexia in severe acute wounds and chronic diseases persists despite nutritional support, and existing explanations do not explain this failure or the observed clinical scope.
• What they did: The study modeled wound healing with IMW present versus inhibited, linked pathogen growth rate to final patient muscle mass in chronic diseases, and simulated nutritional support under both IMW states.
• The result: Inhibiting IMW prevents acute muscle mass loss more effectively than nutritional support, and nutritional support’s benefit is enhanced when IMW is inhibited, including abrogating muscle mass loss in high-growth-rate cancer.