Leona Lewis in vicious circle of stress and throat problems

Leona Lewis‘ current success is reportedly risking her long-term career because it’s stressing her out so much.

The X Factor winner recently topped the US charts - the first British solo female artist to do so in more than 20 years - but a source at her record label Song BMG told the Daily Mail recently that the stress of doing so well is causing her to repeatedly come down with tonsillitis.

The source explained: “The problem is that the whole thing is a vicious circle.”

“Leona gets stressed and nervous and that’s when her voice gives out. The fact that there is so much riding on the next few weeks only adds to her anxiety.”

“She gets very emotional about her throat trouble and has understandably become a bit obsessed about it.”

“To a large extent the issue has become a self-fulfilling prophecy. Everyone is hoping she can get through this period without any more crises because it is so vital to everything she has worked for.”

The singer is now said to be planning surgery to solve the problem.