Rod Stewart, the 80-year-old rock legend, has been forced to cancel several U.S. concerts as he continues to recover from flu. He expressed his devastation and apologized to fans for having to pull out of gigs, including a residency show in Las Vegas, just hours before it was set to begin. Doctors have advised him to rest, leading to the cancellation of six shows in total as he prepares for his upcoming performance at Glastonbury. Fans have rallied in support of Stewart as he shares updates on his health.