The tabloids are buzzing that Britney Spears has confessed to doctors that she has been suffering from an eating disorder, bulimia, since age 16.
According to reports, the troubled 25-year-old singer tearfully told rehab staff - already treating her for drug and alcohol abuse - that she "pigs out" on junk food such as burgers, sweets, biscuits and ice cream then makes herself vomit to avoid putting on weight.
Britney Spears' nine-year nightmare has reportedly been confirmed by a senior source at the elite Promises rehab center in Malibu, California.
She entered the joint last month after shaving her head at a salon.
"Doctors are alarmed at the physical state she is in," said the inside source. "They confronted her about her desperately unhealthy lifestyle and the truth came pouring out."
Britney said she managed to stop the awful habit during her two pregnancies.
On top of her alcohol and alleged cocaine use, the bulimia turned her into a "human train 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, freezing cold the next. Her first week in detox was hell. She was a total mess but slowly she's pulling through."
Dietary specialists at Promises are currently working with the doctors to help the estranged wife of Kevin Federline with the eating disorder, which was discovered when specialists realized why her medications were not working.
The source adds:
"For the first few days, she'd take tablets, then go off and eat breakfast or lunch. She was throwing the whole lot up, so, naturally, her medications weren't working. Now the medical experts know why, her progress should pick up a little speed."