# What Causes What

> Separate the mechanism from the smoke.

Public causal atlas of human biology, behavior, status, and lifestyle. No accounts.
Every edge is stamped MECHANISM, MENDELIAN, LOOP, or SMOKE and names papers with DOI or PMID.
Nothing here is medical advice.

## Cite

The URL is the citation. Prefer Inquire query-strings and case pages over screenshots.
Download the catalog: https://whatcauseswhat.org/api/graph
Bibliography: https://whatcauseswhat.org/sources
Methods: https://whatcauseswhat.org/methods

## Atlas

- Home: https://whatcauseswhat.org/
- Atlas: https://whatcauseswhat.org/atlas
- Matrix: https://whatcauseswhat.org/matrix
- Inquire: https://whatcauseswhat.org/inquire
- Atom: https://whatcauseswhat.org/feed.xml

## Citable questions

- Does vitamin D get you hired?: https://whatcauseswhat.org/inquire?from=vitamin-d&to=employment-status
- Does a pose raise testosterone?: https://whatcauseswhat.org/inquire?from=power-pose&to=testosterone
- Does oxytocin make strangers trust you?: https://whatcauseswhat.org/inquire?from=oxytocin&to=interpersonal-trust
- Does sleep move testosterone?: https://whatcauseswhat.org/inquire?from=sleep-hygiene&to=testosterone

## Cases

- Income, power, and who we choose: https://whatcauseswhat.org/cases/income-mate-preferences
- The dual-hormone hypothesis: https://whatcauseswhat.org/cases/dual-hormone
- Pills, paychecks, and the healthy user: https://whatcauseswhat.org/cases/supplements-healthy-user
- The ovulatory-shift fight: https://whatcauseswhat.org/cases/cycle-shifts
- Poses, sprays, and the replication wave: https://whatcauseswhat.org/cases/pose-and-spray
- Sleep is the handle: https://whatcauseswhat.org/cases/sleep-is-the-handle

## Counts

36 variables, 36 edges, 35 papers, 6 cases. Seed updated 2026-08-31.