PALS of Madonna fear she has been pushing herself too hard to compete with younger stars Taylor Swift and Pink. But concerned friends have revealed she pushed herself to her physical limit to compete with younger singers such as Taylor on the road. “Nobody would say it out loud but there were concerns about another Michael Jackson situation if she doesn’t slow down a bit. “Her condition is completely curable and she’s working with a group of doctors to boost her immune system.”The pal added: “She’ll be back, I am 100 per cent sure of it. THE Rolling Stones show off their timeless swagger as they film a video for their long-awaited new album in New York.