Support Research on Chemical Intolerance!

Toxicant-Induced Loss of Tolerance (TILT) is on the rise.

Our team at the TILT Program at UT Health San Antonio is a global leader in understanding, diagnosing, and exploring solutions for people who are chemically intolerant, or TILTed.

We have driven breakthroughs like these:

A tool for diagnosing TILT. Our Quick Environmental Exposure and Sensitivity Inventory (QEESI) is an internationally validated diagnostic tool for chemical intolerance, based on the experiences of people who became ill after exposures to pesticides, VOCs associated with construction, breast implants, mold, and the Gulf War.

Diagnosing TILT from the US to Japan. Our map shows how researchers from 17+ countries are using the QEESI to address chemical intolerance.

Pioneering research. Our latest research, published in Environmental Sciences Europe, has already been cited 25,000 times and has connected exposures to common chemicals, like paint, pesticides, and cleaning products around the home, with so-called “unexplained” illnesses like chronic fatigue syndrome, Gulf War syndrome, breast implant illness, and chemical intolerance. We also found that mast cell activation is an underlying mechanism for chemical intolerance. This discovery is rapidly leading to potential therapeutic advances to help chemical intolerance sufferers.

Uncovering New Layers of Chemical Intolerance. Watch our presentations to both the World Asthma Foundation’s Microbiome First Summit and the Beyond Pesticides’ National Forum Series. You can see how our research this year has led to a new understanding of how fossil fuels, their combustion products, and synthetic chemical derivatives are contributing to chemical intolerance, autism and ADHD, as well as climate change!

Bilingual comic book. Because we care about environmental justice for all, we created a bilingual comic book to help people identify and remove asthma triggers in their homes. We plan more comics on TILT initiators and triggers.

Please join our quest to stop chemical intolerance by supporting our work today!

Together, with your help, we will expand research into the mechanism underlying TILT, raise awareness of chemical intolerance, and improve life for people who suffer from chemical exposures around the world.


Dr. Claudia Miller, Research Director of the TILT Program and Professor Emeritus in the Department of Family and Community Medicine at UT Health San Antonio