Jonas Brothers had to delay their live performance at Saratoga Spring concert on August 2 following Nick's bad health condition. Nick Jonas left stage for medical assistance because his insulin level dropped and he felt weak.
Nick gave secret warning to his band mate brothers, Joe Jonas and Kevin Jonas, telling about his unwell condition. His brothers then kept reading all signs that audiences were holding up in front of the stage to distract people's attention and therefore gave time for Nick to get his diabetic treatment. Joe said, "I chatted with the audience and kept reading all the signs people were holding up." In line with his brothers' statement, Nick said in a further explanation, "I was only bad for, like, a minute, but Joe kept talking and talking for, like, five minutes."
Since 2005 at age 13, Nick has been diagnosed with Type 1 diabetes in which he suffers from loss of insulin-producing beta cells of Langerhans islets in pancreas. Ever since Nick has to monitor his blood sugar level at regular intervals and stop doing any exhausting activity, including when performing on stage if his blood sugar level falls too low.