The 26-year-old 'Tik Tok' hitmaker, who began treatment for anorexia and bulimia in January, was set to perform at Indiana and Wisconsin in March-April as part of her five-leg Warrior Tour that kicked off in May last years, People magazine.
"I was so looking forward to performing at these dates but I need to follow my doctor's advice and get my health back on track," Kesha said in a statement.
The 'Timber' singer, who has remained connected to her fans via Twitter, thanked them for supporting her.