Amy Winehouse has put her North American tour on hold, raising more concerns about her health.
"Due to the rigors involved in touring, Amy Winehouse has been advised to postpone her upcoming September U.S. and Canadian tour dates," the British singer's publicist, Tracy Miller, said in a statement Tuesday.
"Amy's European and U.K. tour dates in October and November remain in place. Plans are being made to reschedule her U.S. tour for early 2008."