The goal of this clinical trial is to evaluate whether a non-diet nutrition education program can improve eating behaviors, body image, and well-being in normal-BMI women aged 19-35 years. The main questions it aims to answer are:

• Does participation in an 8-week non-diet nutrition education program improve eating behavior, body image, and well-being over time in the intervention group compared to the control group?
• Is there a significant difference between the intervention and control groups in eating behavior, body image, and well-being after the intervention?

Researchers will compare an intervention group receiving an 8-week non-diet nutrition education with a control group receiving no intervention, to see if the program leads to improvements in psychological and behavioral outcomes without focusing on weight loss.

Participants will:

• Complete pre- and post-intervention assessments, including validated questionnaires on eating behavior (DEBQ, FCQ, IES-2), body image (BAS, Stunkard Figure Rating Scale), and psychological well-being (WHO-5, Rosenberg Self-Esteem Scale), as well as a 3-day food diary.
• Be randomly assigned to either the intervention group (8-week online non-diet nutrition education sessions) or the control group (no intervention).
• Engage in 8 weekly, 60-minute sessions focused on intuitive eating, body acceptance, and health-promoting nutrition.

Inclusion Criteria:

• Female,
• Aged between 19-35 years,
• Body Mass Index (BMI) between 18.5-24.9,

Exclusion Criteria:

• Pregnant or breastfeeding,
• Diagnosed eating disorder or other psychiatric condition,
• Currently enrolled in a weight loss program,
• Following a restrictive diet due to medical conditions.

De-identified individual participant data (IPD), including questionnaire responses (e.g., DEBQ, FCQ, IES-2, WHO-5), will be available to qualified researchers for academic and non-commercial use upon reasonable request.

De-identified individual participant data (IPD) and supporting information will be available starting 6 months after publication of the main study results and will remain available for up to 3 years upon request.

IPD and supporting documents will be made available to qualified researchers with a valid academic affiliation. Access will be granted upon submission of a research proposal and a data use agreement. Requests should be directed to the principal investigator via institutional email.

Participants are blind to the group assignment and the primary aim of the study. The study is designed as a single-blind randomized controlled trial.