London: Elton John fears Lady Gaga`s non-stop schedule will take its toll on her health.
He admits he worries about the "frail" 26-year-old pop star, who is godmother to his son Zachary, as she travels for her Born This Way Ball tour.
"I look at Gaga and I think, `How does she do it?` I talk to her mum and dad about it. They worry," a website has quoted John as saying.
"She is frail, and she doesn`t eat when she should do, and she`s a girl, and it`s tougher for a girl. She works really hard. She will be in Denmark one night and Saudi Arabia the next. I know how tiny she is and I do worry about her, yes," he added.