AceShowbiz - The "Poker Face" hitmaker, Lady GaGa has been touring non-stop over the last 18 months with her Monster Ball shows and in early 2010, she sparked fears for her health by canceling a number of concerts due to fatigue.

Lady GaGa admits her constant tiredness is a serious concern, but she is determined to continue her punishing work routine for the sake of her fans.

In an interview with Elton John for V magazine, she says, "At a certain point exhaustion becomes a state of being, and mentally I have to be strong and overcome it. It's like a cloud, a fog really that hovers over me. But in a way I will never ever escape it. Art is my whole life."

"The monsters (fans) are my medicine. They heal me, physically and emotionally, every night at the show. I feel God through their love. I worship little monsters. They're my religion."