Colleen Hoover has revealed that she is being treated for cancer.

The bestselling author of novels including It Ends With Us, Regretting You, and Reminders of Him posted on Facebook, “I got results back today from the geneticist that say my cancer did not come from family genes. It also didn’t come from the two main causes of the cancer, which are HPV and excessive hormones. This means it was more than likely environmental/lifestyle, which is lack of exercise, poor diet and stress.” She did not specify which type of cancer she has, although HPV and excessive hormones are both commonly associated with cervical cancer.

Hoover, 46, made her literary debut in 2012 with the bestselling self-published novels Slammed and Point of Retreat, which were republished the same year by Atria. She published It Ends With Us in 2016; the novel became a viral sensation on TikTok in 2021 and made Hoover one of the most popular authors in the world.

Her books have been adapted for the screen three times, including It Ends With Us; the scandal-plagued film was directed by Justin Baldoni and starred Baldoni and Blake Lively. Hoover’s novels Reminders of Him and Verity are both currently being developed as movies.

Her most recent novel, Woman Down, about an author reeling from the fallout caused by a film adaptation of one of her books, was published Tuesday by Montlake. Hoover has denied that the novel was inspired by the It Ends With Us controversy.

In her Facebook post, Hoover 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. If you see me at the gym, don’t even tell me good job. If you see me at a restaurant eating grilled chicken and drinking water, I’m probably real mad about it.”

On her Instagram account, she also posted a story featuring a picture of her in a hospital gown, with the caption, “Second to last day of radiation! I wish I could blame my hair and facial expressions on @texas.oncology but they’ve been great. Hope you never need them, but highly recommend them.”

Michael Schaub is a contributing writer.