On Monday, the singer took part in a trend where followers ask people to share a photo in response to a question.
Halsey was asked to post a photo of herself at her “lowest point” and shared a now-deleted image meant to show her struggles with an eating disorder.
She later tweeted an apology.
“I am very sorry that I posted a picture of myself that depicts my struggle with ED without sufficient trigger warning,” the tweet said. “I was very nervous to post it and didn’t think carefully. I had positive intentions. I would never hurt anyone who shares my fight.”
She added “with that being said, I’m going to unsubscribe now because this has become something I’m not emotionally equipped with for now. I hope it’s okay.”
Last year, Halsey talked about mental health and living with bipolar disorder.