The mystery illness Britney Spears entered rehab for has been revealed as Bulimia, the former pop princess revealed to staffers at Promises rehab center. Apparently Britney has been stuffing herself since the age of 16 with sweets and fat, only to puke it up shortly thereafter. She explains that during her first pregnancy the Bulimic episodes were curbed, only to continue just recently after her last child, Jayden James was born.

Britney’s nine-year nightmare, revealed in an American magazine, was confirmed by a senior source at the $11,000-a-month Promises center in Malibu, California. She entered the center last month after shaving her head at a hair salon. “Doctors are alarmed at the physical state she is in,” said the source. “They confronted her about her desperately unhealthy lifestyle and the truth came pouring out.” On top of her alcohol and alleged cocaine use, the bulimia turned her into a “human wreck”, according to the source, who added: “When she came here she was shaking and baking. Her whole body was wracked by spasms and she was hot one minute, then freezing cold the next. “Her first week in detox was real hell. She was in a total mess but slowly she’s pulling through.”