4. Selena Gomez
Selena Gomez is currently one of the hottest stars in music. Every song she releases is a hit and she is constantly in the media. But one thing that surprised all of her fans is the news that came out that she has Lupus.
Three years ago, young singer suddenly put a halt in the middle of her tour and she was hospitalized which made the public start the rumors that she was struggling with addiction. But even though she kept it private, she finally admitted it last year and said that her life was threatened and that she had to go through chemotherapy.