Lady Gaga's health has Elton John concerned.
In a new interview with The Guardian, John, 65, said he's worried about the 26-year-old singer.
"I look at Gaga and I think, 'How does she do it?' I talk to her mom and dad about it," the music legend said. "They worry."
"She is frail, and she doesn't eat when she should, and she's a girl, and it's tougher for a girl," John explained. "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."
In April 2011, John revealed on Good Morning America that Gaga is the godmother of his 12-month-old son, Zachary Jackson, with husband David Furnish. "When you get to the real person under there, there's a real simple person under there who loves her parents," he said of Gaga.
John suffered his own health scare recently. On May 23 he was hospitalized with a "serious" respiratory infection. The music legend had to cancel shows in Las Vegas to recover from the illness. "All I can say to the fans is sorry I can't be with you," he said in a statement. "I hope to see you soon at this wonderful theatre at Caesars Palace."
Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!