You're not imagining it.Something triggered your Hashimoto's.

We help you figure out why your immune system attacked your thyroid.

Built by scientists and clinicians from

NIH Harvard Stanford Mount Sinai NYU Duke

Genes load the gun. Exposures pull the trigger.

A lifetime of exposures shapes your health: infections, pollution, stress, and thousands more. Together they are your exposome, and it can hold the answer to why you got sick.

Discover your expotype.

EXPIN maps the links between your exposures and your illness, grounded in peer-reviewed research. A deeply personalized foundation for better care and peace of mind.

Find my why

Tell us your story.

We ask the questions your doctor doesn't have time to. A guided interview maps your background, medical history, environment, the products you use, and daily habits into a complete exposure profile.

We hunt for signals.

EXPIN searches your story for patterns of exposures and disease that are backed in the research and environmental data.

Get your map.

Review your personalized expotype report: a foundation for precision testing, treatment, and prevention strategies.

Climb out of the rabbit hole.

EXPIN is for patients who are…

Tired of endless Reddit threads and influencer reels
Done with shallow conversations at the doctor's office
Ready for science-based answers

Learn about the science

Built by scientists, not internet personalities.

We are experts who have pioneered environmental health, diagnostics, and biophysics. Current and former roles at Harvard, Stanford, Duke, University of Southern California, National Institute of Health, Mount Sinai, and NYU.

Meet the team

Understand the exposures that drive your Hashimoto's Disease.

Build your personalized Expotype and start uncovering the likely triggers behind your illness today.

Get My Expotype