Singing sensation Adele has been told not to embark upon a tour due to concerns that her vocal cords could be permanently damaged.

The Grammy Award winning singer was forced to cancel an American tour last year due to ill health which later resulted in microsurgery on her vocal cords in November.

Adele made her live comeback at the Grammy Awards in February, where she won six trophies, but doctors have allegedly said that she is still not ready to exert her voice.

"The surgery was successful but doctors are still concerned she could damage her golden voice," a source told the Daily Star. "They have given the go-ahead to one-off shows but a full tour has been ruled out for now.

"Adele isn't motivated by money, that's the last thing she cares about. She had a serious scare with her voice and is determined to make sure it doesn't happen again."

It's also believed that Adele has turned down a number of high-profile appearances, including a slot on The X Factor, in order to protect her voice.

"She doesn't want to be a celebrity," the insider added. "She's motivated by the music, not the fame and fortune."