In the Facebook post to Colleen Hoover’s CoHorts – her fan group – she explained that she had suffered recurring health issues throughout 2025.
But she put her concerns to one side while the film adaptation of Reminders of Him was being shot in Canada, and did not seek medical advice “until the movie was finished”, she explained.
On her return home she received her cancer diagnosis.
“It felt huge and scary for a bit, and I had to miss out on the Regretting You premiere and some other important career and personal moments, I just wasn’t ready to share with anyone until I knew what the outcome would be,” she said.
Hoover has not specified what type of cancer she has.
In another Facebook post last week, she said tests had shown it was not a result of family genes, the HPV virus or “excessive hormones”.
“This means it was more likely environmental / lifestyle, which is lack of exercise, poor diet and stress,” she wrote.
“I’m happy and grateful to be alive but I hate vegetables. I hate when I have to get off the couch. I hate sweating. I hate when science is right.”
She joked that if anyone saw her at a restaurant eating grilled chicken and drinking water, “I’m probably real mad about it”.