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Rome Orthorexia Nervosa Questionnaire (ORTO-15)

Rome Orthorexia Nervosa Questionnaire (ORTO-15) Test

Understand how strongly healthy eating may be turning into obsessive concern in about 3 minutes. Quick, clear screening that can flag distress and guide next steps with a clinician.

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Questions: 153 minutes

Hi! My name is Freudly, i am an AI therapist, I will give you an interpretation of the test after you complete it.

08:30

October 2, 2025

October 2, 2025
Material has been updated

October 2, 2025
Material has been published

16,618 views

2,141 completion

1,875 likes

Verified by Daniel Hall

Psychologist with 25 years of experience

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How the Scales are Structured

example score

13/45

Orthorexia Nervosa Scale (ONS)

Assesses the severity of obsessive fixation on eating “healthy” foods (orthorexia-like tendencies).

Low tendency

Moderate tendency

High tendency

0 – 25: Low tendency | 26 – 30: Moderate tendency | 31 – 45: High tendency

A score of 13 falls in the Low tendency range, suggesting no pronounced orthorexia-like fixation on healthy eating on this scale.

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DATA-BASED USER COHORTS

Who Usually Takes This Test?

Health-food perfectionists

41%OF USERS

People who strive to eat “perfectly” and notice anxiety, guilt, or rigid rules around ingredients, purity, or meal timing.

Diet-changers after stress

34%OF USERS

Those who recently tightened their diet due to stress, illness fears, weight changes, or lifestyle shifts and want to check if it became obsessive.

Clients in therapy screening

25%OF USERS

People taking the questionnaire at a psychologist’s request to quickly assess fixation on healthy eating and decide whether deeper work is needed.

BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.

RESULTS YOU CAN ACTUALLY USE

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Used in 52+ countries

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See How You Compare

Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.

Nervous Orthorexia Scale (NOS)

Average

24.9

Normal range

17.9 — 31.9

min.

max.

Majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.

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CLEAR ANSWERS TO COMMON QUESTIONS

Frequently Asked Questions

What does this questionnaire measure?

It screens for a pattern of rigid preoccupation with eating perceived as healthy. It also captures related distress, guilt, and interference with daily life.

How long does it take and what is the format?

Completion typically takes about 3 minutes. It includes 15 items answered using brief response options tied to everyday situations.

Does the result provide a clinical diagnosis?

No. The score indicates the level of risk or symptom prominence and may support a decision to conduct further assessment.

How should items be answered?

Select the option that best matches usual behavior over recent months. Answer all items and avoid spending too much time on any single question.

Why does this version differ from the original 2005 wording?

The adapted version was revised because a direct translation showed low reliability in local use. The revised wording improves measurement consistency while keeping the same screening focus.

WHAT THE TEST MEASURES

About This Assessment

Roman questionnaire for nervous orthorexia, ORTO-15 Test

Rome Orthorexia Nervosa Questionnaire (ORTO-15) Test - Symptoms and Signs

orthorexia eating behavior

This self-report measure is used to screen for orthorexic eating attitudes characterized by an excessive preoccupation with “healthy” or “pure” food choices. The Rome Orthorexia Nervosa Questionnaire (ORTO-15) is intended to support clinical formulation by identifying the degree to which food-related beliefs and behaviors may be rigid, distressing, or functionally impairing.

The instrument includes 15 items and typically takes about 3 minutes to complete. It is commonly used in clinical and research settings as a brief screening tool and does not, by itself, establish a diagnosis. When elevation is observed, results should be interpreted in the context of clinical interview, eating-disorder assessment, and relevant medical and psychosocial factors. The Rome Orthorexia Nervosa Questionnaire (ORTO-15) is sometimes cited in relation to Steven Bratman.

Author: Steven Bratman, thomas-f-cash

Literature: Dunn, T. M., & Bratman, S. On orthorexia nervosa: A review of the literature and proposed diagnostic criteria. Eating Behaviors. 2016.

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