system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A patient who was previously with good muscle mass now presents with decreased muscle mass. There is a history of RTA which led him to be bedridden for 6 months. This decrease in muscle mass is best explained by
assistant
The correct answer is  None