Madonna reportedly visited a Los Angeles hospital last week for hernia surgery.The 47-year-old is believed to have injured herself by exercising too much and by contorting herself into unusual positions during dance routines.Sources say the star "looked pale and had no appetite" after her visit to Cedars Sinai hospital.Friends of the mother-of-two say she wasn't her usual self when she spent the evening at the Los Angeles Kabbalah Centre on Friday night (10.02.06).One source told America's New York Post newspaper: "Madonna didn't eat anything and did not lead the prayer after dinner, as she usually does when she comes."She was unusually quiet."The pop diva's pals are reportedly worried she is taking her punishing exercise regime too far - and is jeopardising her health.
An insider said: "She looks way too thin. It's scary. Everyone around her is buzzing that she's working herself right into exhaustion."
Madonna recently admitted she likes keeping in shape for her husband, director Guy Ritchie.
She said at the time: "I wish I were comfortable enough to be a big woman.
"But I choose men who like carved-out women."