The study presents compelling findings on the association between vitamin D supplementation and improvements in frailty among decompensated cirrhotic patients, but I wonder if the authors have fully accounted for the natural course of post-hospitalization recovery in these individuals. Given that many cirrhotic patients experience some degree of functional rebound after acute decompensation, how did the study distinguish the effects of vitamin D from the general improvements that might have occurred due to better nutrition, medical management, or even just time? Was there any attempt to compare with a control group receiving standard care without vitamin D supplementation, or were there markers used to isolate the direct impact of vitamin D from these broader recovery processes?
