Pebe Sebert, mother of the 'Timber' hitmaker, said Kesha suffered from anorexia and bulimia and therefore sought professional help, reported People magazine.
"(The doctors) told me her blood pressure and sodium were so low they'd never seen that, except with someone who'd had a heart attack or stroke. They said it was a miracle she hadn't dropped dead on-stage," Sebert said.
Sebert recently checked into Timberline Knolls centre near Chicago for Post-traumatic stress disorder (PTSD) where her 26-year-old daughter was shifted on January 3 following an eating disorder.
"I've watched my beautiful, self-confident, brilliant daughter be berated and ridiculed for her looks and weight - to the point that she almost died," she had said.
Lukasz has since denied the allegations and insists he will be supportive of the troubled star while she battles the condition.