8. Nick Jonas: Type 1 Diabetes
Nick Jonas is an American singer-songwriter, musician, actor and multi-instrumentalist, best known as one of the Jonas Brothers, a pop-rock band he formed with his brothers Joe and Kevin. He was diagnosed with type 1 diabetes at age 13 and wears an insulin pump to manage his condition. Type 1 diabetes develops due to an autoimmune disorder that destroys the insulin producing cells in the pancreas, leaving the body unable to produce enough insulin to process the sugars we eat, requiring people with this disease to take injections of insulin.