Miley Cyrus has joked that her handlers took the title of her latest single, We Can't Stop, literally, sending her on a whirlwind summer promotional tour across the United States and Europe. But now, it seems, her late nights and long flights are starting to take a toll.

Miley admitted to turning to drugs for comfort in a newly leaked text to a friend, and then had to reschedule an early morning interview when she wasn't well enough to get out of bed.