Purpose: This study aims to examine the predictors of Orthorexia Nervosa behavior in women. Design and Methods: This cross-sectional study was conducted with 418 women of reproductive age in Turkey. Findings: More positive attitudes towards healthy eating and higher levels of control were significantly associated with more positive intentions. High Orthorexia Nervosa and low control were significantly associated with high body mass index. Practice Implications: Within the framework of the Theory of Planned Behavior, predictors of Orthorexia Nervosa behavior in women were determined as an attitude towards healthy eating, perceived behavioral control, intention, and body mass index.