In 2015, Campbell opened up about her struggles with body image. She confessed that pressure from TV and magazine models made her want to be skinny, however it reached the point where she was getting sick. She read a chapter in Michael Phelps' book Beneath the Surface, where the line "skinny swimmers aren't good swimmers" stuck out in her head. Her mother encouraged her to see a dietitian, and now believes "the sum of your worth is so much more than what you look like".
