Dasmunsi suffered from numerous problems like diabetes and hypertension during his prime. He suffered a massive stroke and paralysis on 12 October 2008, leaving him in minimum conscious state. He was admitted to the All India Institute of Medical Sciences (AIIMS) in New Delhi and was later shifted to Apollo Hospital in New Delhi. He remained on life support, and was diagnosed with a complete failure of the left ventricular system. In November 2009, Dasmunsi was temporarily moved to Düsseldorf, where he underwent stem cell therapy in an attempt to reverse some of the loss of brain functions caused by the stroke.