Lili Reinhart said she experienced a recent mental health "spiral" from dealing with body dysmorphia while filming the latest season of Riverdale.

The 26-year-old actress has been open about her struggle with body image throughout her career. However, she shared in conversation with Dr. Daniel Amen for his interview series Scan My Brain that she had recently been in a "negative headspace" as she witnessed her figure changing on camera.

"I'm constantly exposed to pictures of myself all the time on social media, on my show, pictures of me on my show, which started when I was 19. So I'm sort of constantly comparing what I look like now to what I looked like when I was 19, a child," she said. "So I'm comparing my body to my own body, basically, and afraid of the changes that have been happening."

Reinhart went on to say that she's been in "a battle" with herself as a result of that comparison to her younger self. "It's me vs. me. Me from a couple years ago vs. me now and thinking how do I get back to that? How can I look like that again?" she explained.

As she gets older and faces more changes with her body, it becomes more difficult for her to deal with.

"It has been really hard the last couple months, specifically dealing with more noticeable weight gain than I ever have in my life while also being on film while it was happening. So shooting my show [Riverdale] and having that weight gain basically documented on camera, episode by episode, week by week of my life, my weight fluctuation," she said. "It felt very much like this massive problem, this thing that was taking up truly 90% of my brain capacity, I was barely thinking about anything else. Every thought was about my weight, was about what I was eating, how I could lose weight, how I don't look how I used to look, how everyone looks around me, how I don't look like them. All of my thoughts were about my body and it was very overwhelming and a very negative headspace that I was in."