Muscle Over Weight: What Every Cancer Patient Should Know About the New Era of Weight-Loss Medicine
GLP-1 medications such as semaglutide and tirzepatide can produce dramatic weight loss, but 25–40% of that loss may come from lean muscle rather than body fat. For cancer patients, losing muscle is dangerous: low muscle mass is linked to higher chemotherapy toxicity, greater fatigue, and poorer survival. This article explains why Exercise Oncology treats muscle as medicine, and how resistance training, protein, and body composition assessment help patients preserve strength while on weight-loss medications.
