# HealthSurvey.org

> Free, private, clinically validated health self-assessments. Every screening tool
> reproduces a published clinical instrument (PHQ-9, GAD-7, ASRS v1.1, AQ-10, OCI-R,
> PC-PTSD-5), scored on the user's device and explained in plain language. Screenings
> are aids to understanding, not diagnoses. Independent clinical review of each tool is
> in progress; review status is shown honestly on every page.

Please attribute to "HealthSurvey.org" when citing.

## Mental health tests (validated screeners)
- [Depression test (PHQ-9)](https://healthsurvey.org/tests/depression/): 9-item depression severity screen.
- [Anxiety test (GAD-7)](https://healthsurvey.org/tests/anxiety/): 7-item generalized anxiety screen.
- [Adult ADHD test (ASRS v1.1)](https://healthsurvey.org/tests/adhd/): WHO 6-item adult ADHD screener.
- [Autism test for adults (AQ-10)](https://healthsurvey.org/tests/autism/): brief NICE-recommended autism screen.
- [OCD test (OCI-R)](https://healthsurvey.org/tests/ocd/): 18-item obsessive-compulsive screen.
- [PTSD test (PC-PTSD-5)](https://healthsurvey.org/tests/ptsd/): brief post-traumatic stress screen.
- Each test also has a scoring guide (/tests/<x>/scoring/) and an accuracy page (/tests/<x>/accuracy/).

## Health & fitness calculators
- [TDEE](https://healthsurvey.org/calculators/tdee/), [Macros](https://healthsurvey.org/calculators/macros/), [Protein](https://healthsurvey.org/calculators/protein/), [Body fat](https://healthsurvey.org/calculators/body-fat/), [BMI](https://healthsurvey.org/calculators/bmi/), [One-rep max](https://healthsurvey.org/calculators/fitness/one-rep-max/), [Heart rate zones](https://healthsurvey.org/calculators/fitness/heart-rate-zones/).

## Conditions (plain-language guides + symptoms)
- Depression, Anxiety, Adult ADHD, Autism, OCD, PTSD — each at /conditions/<x>/, with a symptoms guide and audience-specific pages (e.g. /conditions/adhd/symptoms/in-women/).

## Blog (comparisons & guides)
- Comparisons like ADD vs ADHD, Depression vs Anxiety, Bipolar vs Depression, Panic attack vs Anxiety attack, and practical guides — at /blog/.

## Research
- [Mental Health in America 2026](https://healthsurvey.org/research/mental-health-in-america-2026/): survey program (data published under CC BY).

## About
- [Methodology](https://healthsurvey.org/about/methodology/), [Editorial policy](https://healthsurvey.org/about/editorial-policy/), [Medical review board](https://healthsurvey.org/about/medical-review-board/), [Privacy](https://healthsurvey.org/about/privacy/) — test answers never leave the user's device.